From rathnam samsung.com Fri Apr 1 00:39:00 2005 From: rathnam samsung.com (rathnam) Date: Fri Apr 1 17:05:43 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: <7310370020.20050329111608@gmx.de> Message-ID: <001d01c53625$1a96fdc0$2107656a@swcspain> HI Experts, Need some light into the following problem from you guys. I am having some MPEG4 files which are having two bytes 0x0A, 0x0D extra at the end of the file. I would like to know whether these files are corrupt according to the standard. Thanks in advance Regards Rathnam -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050401/142a97bd/attachment.html From spsatendra gmail.com Fri Apr 1 11:02:51 2005 From: spsatendra gmail.com (Satendra) Date: Fri Apr 1 17:06:01 2005 Subject: [Mp4-tech] AAC-HE In-Reply-To: <69D9787BB47F4C4A8AF38D62921F9070051332AC@MI8NYCMAIL01.Mi8.com> References: <69D9787BB47F4C4A8AF38D62921F9070051332AC@MI8NYCMAIL01.Mi8.com> Message-ID: <5942723205033121322295d916@mail.gmail.com> Hi all, I am also looking for some intro or overview papers on AAC or some basic audio codec. Theres lot of info available for video side, but is there nothing for Audio Compression. Is there any please hint. Satendra On Mar 29, 2024 12:44 AM, Stephen Henry wrote: > > > > Hi all, > > > > I feel quite stupid for asking this but, are there any nice introductory > papers or any reference source code available for the AAC-HE (or even plain > AAC) that briefly describe the principles involved. I've been spoiled by the > availability of such information for H.264, and I'm amazed that there > doesn't appear to be anything similar for the audio aspects of the system. > > > > Thanks, > > > > Stephen Henry > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > -- ----------------------------------------------------------------------------------------------------------------------------------- "We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." ------Larry Wall ----------------------------------------------------------------------------------------------------------------------------------- From cyril.concolato enst.fr Fri Apr 1 09:13:13 2005 From: cyril.concolato enst.fr (Cyril Concolato) Date: Fri Apr 1 17:06:06 2005 Subject: [Mp4-tech] scalable formats for PDA, PC, TV In-Reply-To: <7310370020.20050329111608@gmx.de> References: <20050327090004.44573.qmail@web54504.mail.yahoo.com> <7310370020.20050329111608@gmx.de> Message-ID: <424CF489.3010906@enst.fr> Hi Sven, Sven Wontroba a ?crit : > List members, > > > I'm a student writing my thesis about scalable formats for PDA's, PC, > TV,... > > So far I read a dif papers about MPEG4,7, SMIL, MPEG21,... and there is > one point I don't understand completely. With XMT-O and XMT-A it's > posible to describe complex sceens and create some interaction,... True. > within MPEG4 but more precisely in the MPEG21 Idem Adaption, if I > understand everything correct I'm able to scale dif. object depending my > device, user specification,... The relationship between MPEG-4 and MPEG-21 is complex. But in summary, MPEG-4 describes the composition of the presentation while MPEG-21 describes the treatment that you can apply to the presentation. > The point where I'm stuck is, how do I transform my complex XMT > presentation into a MPEG21 presentation. The answer is you cannot. MPEG-21 is not a presentation language, it is not meant to be rendered. One could imagine the opposite: an XMT description created based on an MPEG-21 description. > I found some application to create dims at the Klagenfurt University > Austria with some other helpful information. But may be there are other > information out there. So far I don't understand how to create a complex > presentation for one device as an abstract MPEG21 description. > > Some hints may be to papers(ACM, IEEE, MPEG... ) or other project would > be helpful or may be a link to other lists with more information about > this problem. The DANAE project (http://danae.rd.francetelecom.com) tackles some issues about MPEG-4 and MPEG-21. You can try to have a look. Best regards, Cyril Concolato > > > Thanks Sven > > > ------------------------------------------------------------------------ > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From garysull windows.microsoft.com Fri Apr 1 10:52:19 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 1 19:03:10 2005 Subject: [Mp4-tech] [H.264] Doubts about the te(v) Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DDF090D@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Kata et al, It's pretty simple. When there are more than two alternatives to choose from, it is the same as ue(v). I.e., 1, 010, 011, 00100, 00101, 00110, ... When there are only two alternatives to choose from (for example, when field_pic_flag is 0 and num_ref_idx_l0_active_minus1 is 1 and you are coding ref_idx_l0), using ue(v) would be silly, because the value 0 would be coded as 1 and the value 1 would be coded as 010. This obviously wastes two bits whenever the value 1 is coded. So those two trailing bits are dropped in that case. In other words, the value 0 is coded as 1 and the value 1 is coded as 0. The reasons it's referred to as a "truncated" code is that the useless trailing bits are cut off in this special case. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Heng-Lin Yen +> Sent: Tuesday, March 29, 2024 11:35 PM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] [H.264] Doubts about the te(v) +> +> Dear Experts, +> +> As writen in the H.264 in spec 9.1 for truncated EG +> code "te(v)", +> when the syntax element is coded as te(v), the range +> of the syntax element shall be determined first. +> Does the "range of the syntax element" indicates the +> range of syntax element vlue? +> +> In addition, does anyone kindly show the table of +> te(v)? +> Although the derivation for syntax element of te(v) is +> described in spec 9.1, +> I can't catch what it means exactly. +> +> Thanks in addvance. +> +> Best regards, +> Kata +> +> _____________________________________________________________ +> __________ +> Yahoo!?????? +> ????250MB???????? +> http://tw.promo.yahoo.com/mail_new/index.html +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From garysull windows.microsoft.com Fri Apr 1 11:59:32 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 1 20:17:26 2005 Subject: [Mp4-tech] about H.264/AVC standard document Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DDF0AE4@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> MG Li et al, No, it means all macroblocks are frame macroblocks. Best Regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Li.Mg [???] Sent: Wednesday, March 30, 2024 1:27 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] about H.264/AVC standard document Dear experts, I'm also confused about the case of MacroBlock to Slice group of 8.2.2.8 in ITU-T H.264 (2003/05) version. 8.2.2.8: "Otherwise (frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is equal to 0), the macroblock to slice group map is specified by: MbToSliceGroupMap[ i ] = mapUnitToSliceGroupMap[ ( i / ( 2 * PicWidthInMbs ) ) * PicWidthInMbs + ( i % PicWidthInMbs ) ]" when parameter : frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is equal to 0 --> it means this is a coded frame with all the MacroBlocks are field MarcoBlocks ? BR, MG Li ________________________________ [Mp4-tech] about H.264/AVC standard document Gary Sullivan garysull windows.microsoft.com Mon Jan 24 09:24:36 ESTEDT 2005 * Previous message: [Mp4-tech] AAC transparency bitrates for sampling rates other than 44.1? * Next message: [Mp4-tech] MPEG4, MPEG2, and MPEG1 * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ With field_pic_flag equal to 0 and mb-aff turned off, I think you're talking about an ordinary frame. BTW you should get ahold of something more recent than G050r1. That's from several iterations ago. -G. ________________________________ From: mp4-tech-bounces lists.mpegif.org [mailto:mp4-tech-bounces lists.mpegif.org ] On Behalf Of ??? Sent: Monday, January 24, 2024 3:01 AM To: mp4-tech lists.mpegif.org Subject: [Mp4-tech] about H.264/AVC standard document hello,experts: In h.264/AVC standard document(JVT-G050r1,Page 86) there is a paragraph about FMO decoding: "Otherwise (frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is equal to 0), the macroblock to slice group map is specified by: MbToSliceGroupMap[ i ] = mapUnitToSliceGroupMap[ ( i / ( 2 * PicWidthInMbs ) ) * PicWidthInMbs + ( i % PicWidthInMbs ) ] (8-27)" who can tell me what's the picture type(frame or field or others) if "frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is equal to 0"? thanks! ronggang -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050124/5856f54f/attachment.html ________________________________ * Previous message: [Mp4-tech] AAC transparency bitrates for sampling rates other than 44.1? * Next message: [Mp4-tech] MPEG4, MPEG2, and MPEG1 * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ More information about the Mp4-tech mailing list -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050401/554cbccf/attachment.html From vishy sun.com Fri Apr 1 13:31:49 2005 From: vishy sun.com (Vishy Swaminathan) Date: Sat Apr 2 13:22:32 2005 Subject: [Mp4-tech] how does MPEGJ support MPEG-4 IPMP or control over Descrambler In-Reply-To: <23155bfd050330063933aa6b91@mail.gmail.com> References: <23155bfd050330063933aa6b91@mail.gmail.com> Message-ID: <424DBDC5.6030003@sun.com> Mrukant, According to MPEG-4 Systems Architecture, MPEG-J streams are decoded by an "MPEG-J decoder" just like other elementary streams. The decoded streams are MPEGlets that are executed on the terminal to control the scene, network, decoders or terminal behaviour. IPMP defines control points for all streams/decoders including MPEG-J. MPEG-J has no access to descramblers, decryptors or conditional access modules at the client side. In other words, MPEG-J does not control IPMP components. Hope that helps. Regards, Vishy MRUKANT POPAT wrote: > hi, > > I was just looking at MPEGJ implementation & Architecture. > But I could not find how MPEGJ supports MPEG-4 IPMP. > MPEGJ gives ability to have control on decoding process. > Could you please give me any pointers as to how does it support MPEG-4 > IPMP or provides facility to access or control Descramble/Decryptor or > Conditional Access module at Client Side (STB) > > regards, > MRUKANT > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -- ----------------------------------------------------- Viswanathan (Vishy) Swaminathan Sun Microsystems Inc. 16 Network Circle, UMPK16-162 Menlo Park, CA 94025 Tel:(650) 786-0975 Fax:(650) 786-6028 email:vishy@sun.com, viswanathan.swaminathan@sun.com ----------------------------------------------------- From depaks gmail.com Sat Apr 2 12:01:35 2005 From: depaks gmail.com (Deepak Sharma) Date: Sat Apr 2 13:25:09 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: <001d01c53625$1a96fdc0$2107656a@swcspain> References: <7310370020.20050329111608@gmx.de> <001d01c53625$1a96fdc0$2107656a@swcspain> Message-ID: <6.2.0.14.0.20050402115656.027daf98@pop.gmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050402/9f94fdc8/attachment-0001.html From mpeg4maniac rediffmail.com Sat Apr 2 07:30:39 2005 From: mpeg4maniac rediffmail.com (MPEGFOUR MANIAC) Date: Sat Apr 2 13:26:03 2005 Subject: [Mp4-tech] any cameras in market which does real-time visual object generation ?? Message-ID: <20050402073159.26210.qmail@webmail31.rediffmail.com> ? hi all, Are there any MPEG-4 cameras in market which does real-time visual object generation during encoding ? thank you, MPEG4MANIAC -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050402/a84dd13c/attachment.html From rathnam samsung.com Sun Apr 3 03:47:03 2005 From: rathnam samsung.com (rathnam) Date: Sun Apr 3 12:33:46 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: <6.2.0.14.0.20050402115656.027daf98@pop.gmail.com> Message-ID: <000001c537d1$b78ad9f0$2107656a@swcspain> Hi Deepak, Thanks for the information. What I wanted to know is whether we should consider these files as INVALID files or not. What Speck says about this kind of files. Regards Rathnam -----Original Message----- From: Deepak Sharma [mailto:depaks@gmail.com] Sent: Saturday, April 02, 2024 12:02 PM To: rathnam; 'Sven Wontroba'; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] Corrupt MP4 files Hi Rathnam, My guess is that these files have been opened in text mode. In windows this is default mode. The 0x0A, 0x0D denotes "carriage return". If you open files for writing, using binary mode, this problem should disappear. Regards, Deepak At 12:39 AM 4/1/2005, rathnam wrote: HI Experts, Need some light into the following problem from you guys. I am having some MPEG4 files which are having two bytes 0x0A, 0x0D extra at the end of the file. I would like to know whether these files are corrupt according to the standard. Thanks in advance Regards Rathnam _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050403/1790cace/attachment.html From Gonen.Ben-Boher ceva-dsp.com Sun Apr 3 11:08:00 2005 From: Gonen.Ben-Boher ceva-dsp.com (Gonen Ben-Boher) Date: Sun Apr 3 12:33:51 2005 Subject: [Mp4-tech] AAC-HE Message-ID: <9AB694C76573D24484279E9DB043E5D10E517D@speedy.corp.local> Hi, You can find some clear explanations in http://www.codingtechnologies.com/products/aacPlus.htm (AAC+ is quite similar to HE-AAC) Another good links you'll find at: http://forum.doom9.org/showthread.php?s=&threadid=68300#post424070 http://ff123.net/links.html http://www.mpeg.org/MPEG/starting-points.html#mpeg7 http://www.tnt.uni-hannover.de/project/mpeg/audio/ http://ekei.com/audio/ http://www.3gpp.org/ftp/Specs/html-info/26-series.htm You can find reference code in 3GPP web site. So who said there is no material on Audio in the web :)? Regards, Gonen Ben-Boher -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Satendra Sent: Friday, April 01, 2024 7:33 AM To: Stephen Henry Cc: mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] AAC-HE Hi all, I am also looking for some intro or overview papers on AAC or some basic audio codec. Theres lot of info available for video side, but is there nothing for Audio Compression. Is there any please hint. Satendra On Mar 29, 2024 12:44 AM, Stephen Henry wrote: > > > > Hi all, > > > > I feel quite stupid for asking this but, are there any nice introductory > papers or any reference source code available for the AAC-HE (or even plain > AAC) that briefly describe the principles involved. I've been spoiled by the > availability of such information for H.264, and I'm amazed that there > doesn't appear to be anything similar for the audio aspects of the system. > > > > Thanks, > > > > Stephen Henry > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > -- ------------------------------------------------------------------------ ----------------------------------------------------------- "We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." ------Larry Wall ------------------------------------------------------------------------ ----------------------------------------------------------- _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From thatsmohitag hotmail.com Mon Apr 4 04:30:51 2005 From: thatsmohitag hotmail.com (mohit agarwal) Date: Mon Apr 4 08:54:47 2005 Subject: [Mp4-tech] Mpeg-4 doubts Message-ID: Dear Expert, Can anybody tell me we apply motion estimation and compensation in luminance block and not on chroma block..Why is it so .. Regards Mohit _________________________________________________________________ NRIs, operate Rupee Checking Account. http://creative.mediaturf.net/creatives/citibankrca/rca_msntagofline.htm Without minimum balance for 20 yrs! From gripened gmail.com Mon Apr 4 11:39:47 2005 From: gripened gmail.com (Jayant Chauhan) Date: Mon Apr 4 08:58:35 2005 Subject: [Mp4-tech] [System]TS Demux / TV out Message-ID: <5b996acb05040323097cc884e0@mail.gmail.com> Hey fellas Any pointers for TS Demuxing ?! with regards Jayant From m.semsar ece.ut.ac.ir Mon Apr 4 12:57:22 2005 From: m.semsar ece.ut.ac.ir (m.semsar@ece.ut.ac.ir) Date: Mon Apr 4 13:14:28 2005 Subject: [Mp4-tech] [video] H.264 Motion Estimation document Message-ID: <3839.217.218.36.136.1112603242.squirrel@217.218.36.136> Hi Experts, In fast_me.c file the JVT-D016.doc is introduced as the main reference document for motion estimation and early termination but this document subject is: ?Complexity Reduction of Adaptive Interpolation Filter?. So please let me know the correct document. Thanks, M.Semsarzadeh From kaustubh.patankar vsnl.net Mon Apr 4 14:19:32 2005 From: kaustubh.patankar vsnl.net (kaustubh.patankar@vsnl.net) Date: Mon Apr 4 13:17:28 2005 Subject: [Mp4-tech] Mpeg-4 doubts Message-ID: <12f1a8712f03e6.12f03e612f1a87@vsnl.net> Hi The luma and chroma (YUV) format was introduced considering the Humal visual property of recog. color intensity rather than the color differences (chroma component). Hence the original chroma component can be downsampled (422 or 420). Extending the same logic, the luma component is important in the proper reconstruction of an image. Now in encoder motion estimation is most important and intensive component for execution. The estimation on luma component is sufficient and the motion vector can be extended as per the chroma downsampling. with regards Kaustubh ----- Original Message ----- From: mohit agarwal Date: Monday, April 4, 2024 10:00 am Subject: [Mp4-tech] Mpeg-4 doubts > Dear Expert, > Can anybody tell me we apply motion estimation and compensation in > luminance block and not on chroma block..Why is it so .. > > Regards > Mohit > > _________________________________________________________________ > NRIs, operate Rupee Checking Account. > http://creative.mediaturf.net/creatives/citibankrca/rca_msntagofline.htm > Without minimum balance for 20 yrs! > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include > [audio, [video], [systems], [general] or another apppropriate > identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042- > Antitrust.php From mpeg4maniac rediffmail.com Mon Apr 4 10:34:13 2005 From: mpeg4maniac rediffmail.com (MPEGFOUR MANIAC) Date: Mon Apr 4 13:19:10 2005 Subject: [Mp4-tech] need evaluation version of MOMUSYS VOGUE Message-ID: <20050404103547.23230.qmail@webmail7.rediffmail.com> ? hi all, Is the MOMUSYS VOGUE software available as evaluatin version? If yes from where and how? If not, are there any other softwares which allow to do video segmentation and object generation. Actually I am interested in a piece of software which allows real-time video object generation. If it is part of some MPEG-4 codec, then that is the best thing. Any pointers?? regards, MPEG4MANIAC -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050404/c5671950/attachment.html From depaks gmail.com Mon Apr 4 19:22:51 2005 From: depaks gmail.com (Deepak Sharma) Date: Tue Apr 5 08:53:36 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: <000001c537d1$b78ad9f0$2107656a@swcspain> References: <6.2.0.14.0.20050402115656.027daf98@pop.gmail.com> <000001c537d1$b78ad9f0$2107656a@swcspain> Message-ID: <6.2.0.14.0.20050404192041.02754108@pop.gmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050404/934f43a5/attachment.html From Yubin.Zhu esstech.com Mon Apr 4 11:29:03 2005 From: Yubin.Zhu esstech.com (Yu-Bin Zhu) Date: Tue Apr 5 08:56:51 2005 Subject: [Mp4-tech][H264] Message-ID: <89976087EE37FA4D8684C71F318DD7D901EE60D5@ess2kmail.essnet.com> Dear Experts, I'd like to ask the following question: In H.264 specification A.3 Levels, MaxMvsPer2Mb = 16 for Level number 4 or 4.1. Does the "16" mean 16 motion vectors or 16 pair of(32) motion vectors since common sense tells me that 16 motion vectors are needed for P-type Mb with 4x4 motion compensation block size, 32 motion vectors are required for B-type Mb(16 for forward and 16 for backward)? Please let me know your answer. thanks a lot! Yubin From magarwal neomagic.com Tue Apr 5 14:30:10 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Tue Apr 5 13:34:27 2005 Subject: [Mp4-tech] Mpeg4 Message-ID: <4252539A.60809@neomagic.com> Hi, Can any expert let me know what is a system decoder and why and how is it use. I think ISO 14496-1 refers to system decoder . Regards Mohit From bharatsoni gmail.com Tue Apr 5 15:44:29 2005 From: bharatsoni gmail.com (Bharat Soni) Date: Tue Apr 5 13:34:31 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: <6.2.0.14.0.20050404192041.02754108@pop.gmail.com> References: <6.2.0.14.0.20050402115656.027daf98@pop.gmail.com> <000001c537d1$b78ad9f0$2107656a@swcspain> <6.2.0.14.0.20050404192041.02754108@pop.gmail.com> Message-ID: Hi, If you have created the file in text mode (while writing the mp4 file), it will insert the special characters in it. If later on you try to open the same file in binary mode, those special characters will appear in the binary mode also. So probably this will be invalid mp4 file. To create a valid MP4 file, you have to open it in a binary mode only while writing. Regards, Bharat On Apr 4, 2024 7:22 PM, Deepak Sharma wrote: > Hi Rathnam, > > It is difficult to answer your question. If it is possible for you to > provide me the bit stream, I may be able to answer you exactly. > > regards, > Deepak > > At 03:47 AM 4/3/2005, rathnam wrote: > Hi Deepak, > > Thanks for the information. What I wanted to know is whether we should > consider these files as INVALID files or not. > What Speck says about this kind of files. > > Regards > Rathnam > > > -----Original Message----- > From: Deepak Sharma [ mailto:depaks@gmail.com] > Sent: Saturday, April 02, 2024 12:02 PM > To: rathnam; 'Sven Wontroba'; mp4-tech@lists.mpegif.org > Subject: Re: [Mp4-tech] Corrupt MP4 files > > Hi Rathnam, > > My guess is that these files have been opened in text mode. In windows this > is default mode. The 0x0A, 0x0D denotes "carriage return". If you open files > for writing, using binary mode, this problem should disappear. > > Regards, > Deepak > > At 12:39 AM 4/1/2005, rathnam wrote: > > HI Experts, > > Need some light into the following problem from you guys. > > I am having some MPEG4 files which are having two bytes 0x0A, 0x0D extra at > the end of the file. > > I would like to know whether these files are corrupt according to the > standard. > > Thanks in advance > > Regards > Rathnam > > > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > From pooya.dehghani gmail.com Tue Apr 5 14:20:24 2005 From: pooya.dehghani gmail.com (Pooya Dehghani) Date: Tue Apr 5 13:34:36 2005 Subject: [Mp4-tech] MPEG-4 FGS Encoding Message-ID: Dear all I am working with Mirosoft MPEG-4 codec, for generating some FGS video sequences. I have encoded some sequences , but still not any FGS one. Would you please help me on that and also tell me how should I have a record of frame sizes and some other statistics ( in order to work on FGS traffic modeling ). I would we be very pleased if any of you help me with that. Thanks and regards in advance Pooya From dsn2603 rediffmail.com Tue Apr 5 14:52:06 2005 From: dsn2603 rediffmail.com (sakthi narayanan) Date: Tue Apr 5 20:09:12 2005 Subject: [Mp4-tech] any cameras in market which does real-time visual object generation ?? Message-ID: <20050405145340.13105.qmail@webmail32.rediffmail.com> ? hi all, there is any utility available for converting ADTS/ADIF bitstream to raw aac bitstreams. with regards, sakthi On Sat, 02 Apr 2024 MPEGFOUR MANIAC wrote : > >hi all, > >Are there any MPEG-4 cameras in market which does real-time visual object generation during encoding ? > >thank you, >MPEG4MANIAC >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050405/b94da178/attachment.html From SassanP vbrick.com Tue Apr 5 12:26:53 2005 From: SassanP vbrick.com (Sassan Pejhan) Date: Tue Apr 5 20:11:21 2005 Subject: [Mp4-tech] [video] H.264 Motion Estimation document Message-ID: Hi, You may want to look at the following documents: JVT-F017r1 JVT-G016 Regards, Sassan > -----Original Message----- > From: m.semsar@ece.ut.ac.ir [mailto:m.semsar@ece.ut.ac.ir] > Sent: Monday, April 04, 2024 4:27 AM > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] [video] H.264 Motion Estimation document > > > Hi Experts, > In fast_me.c file the JVT-D016.doc is introduced as the main reference > document for motion estimation and early termination but this document > subject is: > "Complexity Reduction of Adaptive Interpolation Filter". > So please let me know the correct document. > Thanks, > M.Semsarzadeh > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include > [audio, [video], [systems], [general] or another apppropriate > identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php From sven- gmx.de Tue Apr 5 11:39:36 2005 From: sven- gmx.de (Sven Wontroba) Date: Tue Apr 5 20:12:13 2005 Subject: [Mp4-tech] scalable formats for PDA, PC, TV In-Reply-To: <424CF489.3010906@enst.fr> References: <20050327090004.44573.qmail@web54504.mail.yahoo.com> <7310370020.20050329111608@gmx.de> <424CF489.3010906@enst.fr> Message-ID: <778787752.20050405113936@gmx.de> Cyril Concolato, Thanks a lot for the reply. Sorry for the delay of my answer. >> The point where I'm stuck is, how do I transform my complex XMT >> presentation into a MPEG21 presentation. > The answer is you cannot. MPEG-21 is not a presentation language, it is > not meant to be rendered. One could imagine the opposite: an XMT > description created based on an MPEG-21 description. My multimedia backgound is based on SMIL, HTML+Time and therefor I was stuck how to do this. I have to look more into MPEG-21 how to describe Digital Items. Well the limited salability of SMIL,... was something why I wanted to learn more about MPEG-21 I found a project which does more or less what I wanted to do http://melisa.intranet.gr/ >> Some hints may be to papers(ACM, IEEE, MPEG... ) or other project would >> be helpful or may be a link to other lists with more information about >> this problem. > The DANAE project (http://danae.rd.francetelecom.com) tackles some > issues about MPEG-4 and MPEG-21. You can try to have a look. I visited meanwhile the Dane project page - I'll have to search for the project papers in the specific libraries. Thanks a lot for your help Regards Sven -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050405/9bb13d4e/attachment.html From rathnam samsung.com Wed Apr 6 02:35:31 2005 From: rathnam samsung.com (rathnam) Date: Tue Apr 5 21:49:51 2005 Subject: [Mp4-tech] Corrupt MP4 files In-Reply-To: Message-ID: <000001c53a23$36177320$2107656a@swcspain> Hi Bharat Thanks a lot for the analysis and information. Regards Rathnam -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Bharat Soni Sent: Tuesday, April 05, 2024 3:44 PM To: Deepak Sharma Cc: mp4-tech@lists.mpegif.org; Sven Wontroba; rathnam Subject: Re: [Mp4-tech] Corrupt MP4 files Hi, If you have created the file in text mode (while writing the mp4 file), it will insert the special characters in it. If later on you try to open the same file in binary mode, those special characters will appear in the binary mode also. So probably this will be invalid mp4 file. To create a valid MP4 file, you have to open it in a binary mode only while writing. Regards, Bharat On Apr 4, 2024 7:22 PM, Deepak Sharma wrote: > Hi Rathnam, > > It is difficult to answer your question. If it is possible for you to > provide me the bit stream, I may be able to answer you exactly. > > regards, > Deepak > > At 03:47 AM 4/3/2005, rathnam wrote: > Hi Deepak, > > Thanks for the information. What I wanted to know is whether we should > consider these files as INVALID files or not. > What Speck says about this kind of files. > > Regards > Rathnam > > > -----Original Message----- > From: Deepak Sharma [ mailto:depaks@gmail.com] > Sent: Saturday, April 02, 2024 12:02 PM > To: rathnam; 'Sven Wontroba'; mp4-tech@lists.mpegif.org > Subject: Re: [Mp4-tech] Corrupt MP4 files > > Hi Rathnam, > > My guess is that these files have been opened in text mode. In windows this > is default mode. The 0x0A, 0x0D denotes "carriage return". If you open files > for writing, using binary mode, this problem should disappear. > > Regards, > Deepak > > At 12:39 AM 4/1/2005, rathnam wrote: > > HI Experts, > > Need some light into the following problem from you guys. > > I am having some MPEG4 files which are having two bytes 0x0A, 0x0D extra at > the end of the file. > > I would like to know whether these files are corrupt according to the > standard. > > Thanks in advance > > Regards > Rathnam > > > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From nicko via-telecom.com Tue Apr 5 14:34:48 2005 From: nicko via-telecom.com (Nobu Okuyama) Date: Tue Apr 5 21:50:57 2005 Subject: [Mp4-tech] [audio]AAC Message-ID: <22DB07950E378646922C61A74FCEB6DF0112BA10@exchsd1> Hi all, I wonder if someone could point me to a site where source music coded with AAC (ADTS format preferred). Thank you, From Wesley.DeNeve ugent.be Wed Apr 6 00:10:05 2005 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Wed Apr 6 04:42:12 2005 Subject: [Mp4-tech] scalable formats for PDA, PC, TV References: <20050327090004.44573.qmail@web54504.mail.yahoo.com><7310370020.20050329111608@gmx.de> <424CF489.3010906@enst.fr> <778787752.20050405113936@gmx.de> Message-ID: <050601c53a2c$38f15800$6b01a8c0@Persephone> Hi, Sven Wontroba wrote: >> Cyril Concolato, >> >> Thanks a lot for the reply. Sorry for the delay of my answer. >> >>>> The point where I'm stuck is, how do I transform my complex XMT >>>> presentation into a MPEG21 presentation. >>> The answer is you cannot. MPEG-21 is not a presentation language, >>> it is not meant to be rendered. One could imagine the opposite: an >>> XMT description created based on an MPEG-21 description. >> >> My multimedia backgound is based on SMIL, HTML+Time and therefor I >> was stuck how to do this. I have to look more into MPEG-21 how to >> describe Digital Items. Well the limited salability of SMIL,... was >> something why I wanted to learn more about MPEG-21 I found a >> project which does more or less what I wanted to do >> http://melisa.intranet.gr/ You also might want to have a look at the following demo in case you are interested in a possible link between MPEG-21 Digital Item Declarations, SMIL and HTML + TIME: http://multimedialab.elis.ugent.be/demo.asp (look for "Temporal synchronization of media within MPEG-21 Digital Item Declarations"). Note that the concepts behind this demo most probably diverge from your thesis topic. Best regards, Wesley De Neve From garysull windows.microsoft.com Tue Apr 5 16:51:12 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 6 04:42:17 2005 Subject: [Mp4-tech][H264] Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF182B6@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> It means 16 motion vectors. The syntax would support up to 32, but that statement restricts it. You might want to double check to make sure you have the latest draft of the standard, since the method of counting motion vectors was made more precise in corrigendum work. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Yu-Bin Zhu +> Sent: Monday, April 04, 2024 11:29 AM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech][H264] +> +> Dear Experts, +> +> I'd like to ask the following question: +> +> In H.264 specification A.3 Levels, MaxMvsPer2Mb = 16 for +> Level number 4 or 4.1. +> Does the "16" mean 16 motion vectors or 16 pair of(32) +> motion vectors since common +> sense tells me that 16 motion vectors are needed for P-type +> Mb with 4x4 motion compensation +> block size, 32 motion vectors are required for B-type Mb(16 +> for forward and 16 for backward)? +> +> Please let me know your answer. +> +> thanks a lot! +> +> Yubin +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From jiazhaox mobilesoft.com.cn Wed Apr 6 08:45:30 2005 From: jiazhaox mobilesoft.com.cn (JazryXu) Date: Wed Apr 6 04:42:21 2005 Subject: [Mp4-tech] [Video] ISO 14496-14: mp4 file format References: <22DB07950E378646922C61A74FCEB6DF0112BA10@exchsd1> Message-ID: <002201c53a41$ef993e50$240aa8c0@JazryXu> Hi, All: I wonder if someone could help me to look for the "ISO/IEC 14496-14: mp4 file format" specification, web site or other information. thank you. Best Regards! Jazry From jjaji2003 yahoo.com Wed Apr 6 03:11:07 2005 From: jjaji2003 yahoo.com (ahmad jalal) Date: Wed Apr 6 04:42:27 2005 Subject: [Mp4-tech] Picture order Count Message-ID: <20050406021107.90070.qmail@web32109.mail.mud.yahoo.com> Hello all Experts, About H.264 standards according to 8.2.1.2 (decoding process for POC type 1) Some doubt in following defination 1. if NAL is equal to 5 then FrameNumOffset = 0 (means it changes into next sequence )and again start from begining . 2. absFrameNum = total no. of frame in one pic (m i right) 3. Diference between picOrderCntCycleCnt ,expectedDeltaperPicOrderCntCycle and expectedPicOrderCnt ? thanks in advance Ahmad --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050406/6c284512/attachment-0001.html From smithajo gmail.com Wed Apr 6 15:32:10 2005 From: smithajo gmail.com (Smitha Joseph) Date: Wed Apr 6 12:40:48 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <7bca48b40504060302300a2f8e@mail.gmail.com> Hi, The H.264 standard specifies the parameter disable_deblocking_filter_idc in the slice header which specifies whether the deblocking filter is disabled for the macroblock/macroblock edges in that slice. The details of how the parameter disables filtering at the decoder side for the different values is clear from the standard. My doubt is how does the encoder decide whether to enable or disable filtering for each macroblock/macroblock edges in a slice? Thanks, Smitha Joseph From magarwal neomagic.com Wed Apr 6 15:34:35 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Wed Apr 6 12:40:54 2005 Subject: [Mp4-tech] Mpeg4 Visual Conformance standard Query Message-ID: <4253B433.7080709@neomagic.com> Hi, The Conformance standard for Mpeg4 Visual section 4.4 of ISO 14496-4 states that compliant decoder shall reconstruct I ,P B VOPs within +/-1 pixel diference compared with that by the reference decoder.How does one measure this +/- 1 pixel difference .After IDCT(before IDCT) we get a set of matrixes ,so this computation is done on that matrix or there is some other way to do it. If anybody could clear my doubts I would be greatful.. Regards Mohit From mpeg4maniac rediffmail.com Wed Apr 6 10:31:38 2005 From: mpeg4maniac rediffmail.com (MPEGFOUR MANIAC) Date: Wed Apr 6 12:40:59 2005 Subject: [Mp4-tech] looking for latest 14496-5 reference software Message-ID: <20050406103311.26130.qmail@webmail8.rediffmail.com> ? hi, I am looking for downloading the latest 14496-5 reference software. I got this link:- http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ which has many 14496-5 links. Can any one tell me which is the _latest_ one that I can download fully. regards, MPEG4MANIAC -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050406/22ec2e39/attachment.html From Ye-Kui.Wang nokia.com Wed Apr 6 13:31:14 2005 From: Ye-Kui.Wang nokia.com (Ye-Kui.Wang@nokia.com) Date: Wed Apr 6 12:42:19 2005 Subject: [Mp4-tech] [Video] ISO 14496-14: mp4 file format Message-ID: <1C1F3D15859526459B4DD0A7A9B2268B072A38@trebe101.NOE.Nokia.com> If your organization is a member of MPEG, you can find the FDIS text in N5298, the MPEG output document from the 62th MPEG meeting in Shanghai. BR, YK > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of ext JazryXu > Sent: 06 April, 2005 03:46 > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] [Video] ISO 14496-14: mp4 file format > > > Hi, All: > I wonder if someone could help me to look for the > "ISO/IEC 14496-14: mp4 file format" specification, web site > or other information. > > thank you. > > Best Regards! > Jazry > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include > [audio, [video], [systems], [general] or another apppropriate > identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php From sdey pace.stpp.soft.net Wed Apr 6 19:26:41 2005 From: sdey pace.stpp.soft.net (Soumen Kumar Dey) Date: Wed Apr 6 15:29:38 2005 Subject: [Mp4-tech] Mpeg4 Visual Conformance standard Query References: <4253B433.7080709@neomagic.com> Message-ID: <00a601c53ab0$75f62d50$8564a8c0@psil> It can be possible depending upon the IDct implementation. But I've one more doubt. If (+/-1) pixel difference in I VOP is possible then it can be (+/- 1, +/- 2 for P VOP) because some macroblocks can be predicted from those macroblock where pixel difference is (+/- 1). Even it can affect the complete sequence. If I'm wrong then please clarify me. Thanks in advacnce, Soumen ----- Original Message ----- From: "Mohit Agarwal" To: Sent: Wednesday, April 06, 2024 3:34 PM Subject: [Mp4-tech] Mpeg4 Visual Conformance standard Query > Hi, > The Conformance standard for Mpeg4 Visual section 4.4 of ISO 14496-4 > states that > compliant decoder shall reconstruct I ,P B VOPs within +/-1 pixel > diference compared > with that by the reference decoder.How does one measure this +/- 1 pixel > difference > .After IDCT(before IDCT) we get a set of matrixes ,so this computation > is done on > that matrix or there is some other way to do it. > > If anybody could clear my doubts I would be greatful.. > > Regards > Mohit > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From nicko via-telecom.com Wed Apr 6 09:25:09 2005 From: nicko via-telecom.com (Nobu Okuyama) Date: Wed Apr 6 21:47:25 2005 Subject: [Mp4-tech] [audio] Mp4 to AAC converter Message-ID: <22DB07950E378646922C61A74FCEB6DF0112BA11@exchsd1> Hi all, I would like to decode files with .mp4 extension to AAC format. Is there any utility that does the job? Thank you, From garysull windows.microsoft.com Wed Apr 6 17:33:33 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 7 01:16:56 2005 Subject: [Mp4-tech] The latest ITU-T video coding standards are now publicly available Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F23C@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Good news - see below: Note: Make sure you know about the "3-free" program (see http://ecs.itu.ch/cgi-bin/ebookshop). ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264 (03/05) : Advanced video coding for generic audiovisual services URL: http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC -H.264-200503-P ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264.1 (03/05) : Conformance specification for H.264 advanced video coding URL: http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC -H.264.1-200503-P ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264.2 (03/05) : Reference software for H.264 advanced video coding URL: http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC -H.264.2-200503-P ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.263 (01/05) : Video coding for low bit rate communication URL: http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC -H.263-200501-P ------------------------------------------------------------- Best Regards, Gary Sullivan From garysull windows.microsoft.com Wed Apr 6 17:51:44 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 7 01:20:33 2005 Subject: [Mp4-tech] RE: The latest ITU-T video coding standards are now publicly available Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F285@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Some of the URLs got chopped up in the version of the message that I received after sending it. In case that caused a problem for anyone, here is a copy that uses abbreviated links: Good news - see below: Note: Make sure you know about the "3-free" program (see http://ecs.itu.ch/cgi-bin/ebookshop). ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264 (03/05) : Advanced video coding for generic audiovisual services URL: http://tinyurl.com/62t46 ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264.1 (03/05) : Conformance specification for H.264 advanced video coding URL: http://tinyurl.com/5qp7g ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.264.2 (03/05) : Reference software for H.264 advanced video coding URL: http://tinyurl.com/6flcp ------------------------------------------------------------- Updated: 2024-04-05 23:58:03 Title: H.263 (01/05) : Video coding for low bit rate communication URL: http://tinyurl.com/54t27 ------------------------------------------------------------- -----Original Message----- From: Gary Sullivan Sent: Wednesday, April 06, 2024 5:34 PM To: jvt-experts@mail.imtc.org; 'vceg@mail.imtc.org' Cc: mp4-tech@lists.mpegif.org Subject: The latest ITU-T video coding standards are now publicly available [snip] Best Regards, Gary Sullivan From fredrik lsig.nel.co.jp Thu Apr 7 10:17:00 2005 From: fredrik lsig.nel.co.jp (Fredrik Claesson) Date: Thu Apr 7 07:26:35 2005 Subject: [Mp4-tech] [H.264] I_PCM mode available in all profiles? Message-ID: <42548A0C.9040704@lsig.nel.co.jp> Dear Experts, Is the I_PCM mode available in all profiles? It was my understanding that the I_PCM mode was part of the Fidelity Range Extensions, and available only for the High 4:4:4 Profile, as was presented in "The H.264/AVC Advanced Video Coding Standard: Overview and Introduction to the Fidelity Range Extensions" (Sullivan, Topiwala, Luthra), SPIE Conference XXVII, August 2004, chapter 2.1.6. However, according to the latest Rec. H.264 draft, chapter 0.6, the following added paragraph seems to indicate that the I_PCM mode is available in all profiles: "With the exception of the transform bypass mode of operation for lossless coding in the High 4:4:4 profile and the I_PCM mode of operation in all profiles..." Best Regards, Fredrik Claesson From gbmallikarjunarao yahoo.com Thu Apr 7 05:54:43 2005 From: gbmallikarjunarao yahoo.com (mallikarjun rao) Date: Thu Apr 7 07:29:24 2005 Subject: [Mp4-tech] [audio] Mp4 to AAC converter In-Reply-To: 6667 Message-ID: <20050407045443.55372.qmail@web52002.mail.yahoo.com> Hi, You can download the free mp4UI tool from this site http://www.free-codecs.com/mp4UI_download.htm It will convert mp4 file to raw aac bitstreams and adts aac file.U can convert the mp4 file to raw aac file. I think,it will be so useful for you. With regards Mallikarjun Nobu Okuyama wrote:Hi all, I would like to decode files with .mp4 extension to AAC format. Is there any utility that does the job? Thank you, _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php Send instant messages to your online friends http://uk.messenger.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050407/3d951266/attachment.html From magarwal neomagic.com Thu Apr 7 11:27:26 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Fri Apr 8 04:30:03 2005 Subject: [Mp4-tech] Mpeg4 Visual Conformance standard Query In-Reply-To: <00a601c53ab0$75f62d50$8564a8c0@psil> References: <4253B433.7080709@neomagic.com> <00a601c53ab0$75f62d50$8564a8c0@psil> Message-ID: <4254BDB6.6080003@neomagic.com> Thanks As far as your doubt the standard says it could be both +/- 1(4.4) and 2 (4.5.1).Some contradiction is there. I wanted to apply this +/-1 or 2 pixel difference in case samples with IDCT do we have to open the *yuv* file and scan it then compare each y ,u and v samples with that generated by reference decoder .Do we apply same method for samples without IDCT. Please let me know is this the method or something else. Best Regards Mohit Soumen Kumar Dey wrote: >It can be possible depending upon the IDct implementation. >But I've one more doubt. If (+/-1) pixel difference in >I VOP is possible then it can be (+/- 1, +/- 2 for P VOP) >because some macroblocks can be predicted from those >macroblock where pixel difference is (+/- 1). Even it can affect the >complete sequence. >If I'm wrong then please clarify me. > >Thanks in advacnce, >Soumen > > >----- Original Message ----- >From: "Mohit Agarwal" >To: >Sent: Wednesday, April 06, 2024 3:34 PM >Subject: [Mp4-tech] Mpeg4 Visual Conformance standard Query > > > > >>Hi, >>The Conformance standard for Mpeg4 Visual section 4.4 of ISO 14496-4 >>states that >>compliant decoder shall reconstruct I ,P B VOPs within +/-1 pixel >>diference compared >>with that by the reference decoder.How does one measure this +/- 1 pixel >>difference >>.After IDCT(before IDCT) we get a set of matrixes ,so this computation >>is done on >>that matrix or there is some other way to do it. >> >>If anybody could clear my doubts I would be greatful.. >> >>Regards >>Mohit >>_______________________________________________ >>NOTE: Please use clear subject lines for your posts. Include [audio, >> >> >[video], [systems], [general] or another apppropriate identifier to indicate >the type of question you have. > > >>Note: Conduct on the mailing list is subject to the Antitrust guidelines >> >> >found at >http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >. > > > From asic_soc 163.com Thu Apr 7 14:47:54 2005 From: asic_soc 163.com (=?gb2312?B?U2hlbl9zaGFcKMnyybNcKQ==?=) Date: Fri Apr 8 04:56:37 2005 Subject: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <013501c53b35$96180830$291410ac@TMT.COM> The deblocking filter is to improve the picture quality and it's useful for low bit rate application. I think in the application of HDTV/DVD, this feature is not needed because the picure quality is so good that no improvement is needed. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050407/f501e083/attachment.html From asic_soc 163.com Thu Apr 7 15:03:27 2005 From: asic_soc 163.com (=?UTF-8?Q?Shen=5Fsha=28=E6=B2=88=E6=B2=99=29?=) Date: Fri Apr 8 04:56:44 2005 Subject: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <016801c53b37$86268a80$291410ac@TMT.COM> The deblocking filter is to improve the picture quality and it's useful for low bit rate application. I think in the application of HDTV/DVD, this feature is not needed because the picure quality is so good that no improvement is needed. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050407/6664ad3a/attachment.html From garysull windows.microsoft.com Thu Apr 7 01:28:59 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 05:30:52 2005 Subject: [Mp4-tech] [H.264] I_PCM mode available in all profiles? Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F480@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> See below: +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> Fredrik Claesson +> Sent: Wednesday, April 06, 2024 6:17 PM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] [H.264] I_PCM mode available in all profiles? +> +> Dear Experts, +> +> Is the I_PCM mode available in all profiles? Yes. +> +> It was my understanding that the I_PCM mode was part of the Fidelity +> Range Extensions, and available only for the High 4:4:4 +> Profile, as was +> presented in "The H.264/AVC Advanced Video Coding Standard: +> Overview and +> Introduction to the Fidelity Range Extensions" (Sullivan, Topiwala, +> Luthra), SPIE Conference XXVII, August 2004, chapter 2.1.6. You need to read what that paper was saying more carefully. I apologize if our writing style was confusing. That section of the paper says that the "standard includes a PCM macroblock mode... However, the PCM mode is clearly not efficient ... When developing the FRExt amendment, it was decided that a more effective means of lossless coding was desirable... FRExt therefore also includes a transform-bypass lossless mode which uses prediction and entropy coding for encoding sample values. When this mode is enabled (which can only be in Hi444P use), the meaning of the smallest selectable value of the quantization parameter is redefined to invoke the lossless coding operation. The new lossless mode of FRExt is a fairly efficient lossless video coder..." In other words, the original profiles had I_PCM already. FRExt High 4:4:4 profile adds something new in addition to that. The new thing is called transform-bypass lossless mode (at least by me). Best Regards, Gary Sullivan +> +> However, according to the latest Rec. H.264 draft, chapter 0.6, the +> following added paragraph seems to indicate that the I_PCM mode is +> available in all profiles: "With the exception of the +> transform bypass +> mode of operation for lossless coding in the High 4:4:4 +> profile and the +> I_PCM mode of operation in all profiles..." +> +> Best Regards, +> +> Fredrik Claesson +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From smithajo gmail.com Thu Apr 7 14:31:22 2005 From: smithajo gmail.com (Smitha Joseph) Date: Fri Apr 8 05:30:58 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc In-Reply-To: References: <7bca48b40504060302300a2f8e@mail.gmail.com> Message-ID: <7bca48b405040701017653f476@mail.gmail.com> Hi, Thanks for the replies. I had an additional doubt. In the JVT code, the encoder configuration file has aparameter which sets the value disable_deblocking_filter_idc to 1 or 0. But the standard specifies that disable_deblocking_filter_idc can have a value 2 also, when does encoder set this parameter value to 2. Thanks, Smitha Joseph On Apr 7, 2024 12:31 PM, Adarsh Golikeri wrote: > Hi, > > In the encoder congiguration file, there are parameters for "Loop > filter" which allow for enabling/disabling the deblocking filter. If > the filter is enabled, then the boundary strength is chosen according > to : > > boundary is an intra-intra / inter-intra MB boundary : strength = 4 (strongest) > boundary is an intra-inter / inter-inter non-MB boundary (i.e within > an MB) : strength = 3 > boundary is an inter-inter boundary, with coded coefficients : strength = 2 > boundary between MBs using different reference pictures / different > number of reference pictures / have MV values differing by more than > one luma sample : strength = 1 > otherwise : strength = 0. > > Hope that helped, > > Bye ! > > Adarsh > > On Apr 6, 2024 3:02 AM, Smitha Joseph wrote: > > Hi, > > > > The H.264 standard specifies the parameter > > disable_deblocking_filter_idc in the slice header which specifies > > whether the deblocking filter is disabled for the > > macroblock/macroblock edges in that slice. The details of how the > > parameter disables filtering at the decoder side for the different > > values is clear from the standard. My doubt is how does the encoder > > decide whether to enable or disable filtering for each > > macroblock/macroblock edges in a slice? > > > > Thanks, > > Smitha Joseph > > _______________________________________________ > > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > From guede_lewis_adrian hotmail.com Thu Apr 7 10:51:43 2005 From: guede_lewis_adrian hotmail.com (adrian guede-lewis) Date: Fri Apr 8 05:31:04 2005 Subject: [Mp4-tech] Questions on H.264-SVC Message-ID: Dear Experts, I am currently working on the H.264-SVC codec proposed by the HHI and I was wondering if somebody could help me out on a few aspects. I am trying to figure out a way to apply timestamps to the scalable output stream for efficient interfacing with the transport application. To do so, I need to make sure I not wrong on the following points: - Q1: The encoder performs, for the base layer, a pyramid decomposition (UMCTF) in a open loop fashion in conformance with the H.264 AVC syntax. The decoder therefore performs an inverse pyramid reconstruction, but this time in a close loop fashion since the H.264-AVC standard codec only performs close loop decoding (hasn't much choice either!). Is that write ? Doesn't this cause a drift effect? - Q2: Does the coder perform interlayer prediction on the FGS layers? I mean, when decoding, lets say, the CIF resolution, does the QCIF FGS layers need to be decoded? - Q3: How many different types of the interlayer predictions are there? (I need to sort out things clearly in order to know what needs to be decoded on the base layers). As far as I understood, there?s the Intra BL prediction which does not require inverse MCTF on the base Layers, the Inter Motion prediction (using previous spatial layers motion info to code current layer) and the residual inter-prediction ( basically consists in just retrieving residual data of the corresponding MB in previous layer, is that write ? This latter aspect is not clear to me, if somebody could explain it to me, it would be great). Are these all the inter-layers prediction tricks? Does it mean I do not need to decode completely the previous spatial layers (no inverse MCTF or UMCTF required at all)? - Q4: Finally, I was wondering if these inter-layer predictions were applied, for the current spatial layer, using all the previous spatial layers (which need to be stored on a GOP basis in this case and would be memory consuming) or only based on the previous spatial layer ? I hope this not too much asking at once, I would be very grateful if somebody could help me. Best regards, Adrian (Simecom, France) From mg-li prolific.com.tw Thu Apr 7 19:20:53 2005 From: mg-li prolific.com.tw (=?big5?B?TGkuTWcgW6f1slHB4l0=?=) Date: Fri Apr 8 05:31:09 2005 Subject: [Mp4-tech] [h.264] reference picture list construction Message-ID: Dear experts, In ITU-T H.264 standard (05/2003) 8.2.4, the last sentence is ��A reference picture may appear at more than one index in the modified reference picture lists RefPicList0 or RefPicList1��. Does it mean that RefPicList0 may have two difference indexes both point to the same reference picture? Can somebody tell me when this case may happen? Thanks in advance. BR, MG Li -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050407/ce84a780/attachment.html From richard.wilding 3dlabs.com Thu Apr 7 14:28:05 2005 From: richard.wilding 3dlabs.com (Richard Wilding) Date: Fri Apr 8 05:31:15 2005 Subject: [Mp4-tech] RE: The latest ITU-T video coding standards are now publicly available In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F285@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> References: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F285@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: <42552755.6010500@3dlabs.com> Garry, I have just downloaded the latest ITU H.264 spec release. (H.264 [03/05] Advanced video coding for generic audiovisual services document) Do you know if there is a document listing the changes between this and the previous ITU release? Section 0.4 of the document refers to a second technical corrigendum in 2005, is this available as a separate document to avoid trawling through the 300+ pages for changes? Also, the ITU lists this as a prepublished document, any idea when the final edited version will be released? Many thanks, Richard Gary Sullivan wrote: > Some of the URLs got chopped up in the version of the message that I > received after sending it. In case that caused a problem for anyone, > here is a copy that uses abbreviated links: > > Good news - see below: > > Note: Make sure you know about the "3-free" program > (see http://ecs.itu.ch/cgi-bin/ebookshop). > > ------------------------------------------------------------- > Updated: 2024-04-05 23:58:03 > Title: H.264 (03/05) : Advanced video coding for generic audiovisual > services > URL: http://tinyurl.com/62t46 > ------------------------------------------------------------- > Updated: 2024-04-05 23:58:03 > Title: H.264.1 (03/05) : Conformance specification for H.264 advanced > video coding > URL: http://tinyurl.com/5qp7g > ------------------------------------------------------------- > Updated: 2024-04-05 23:58:03 > Title: H.264.2 (03/05) : Reference software for H.264 advanced video > coding > URL: http://tinyurl.com/6flcp > ------------------------------------------------------------- > Updated: 2024-04-05 23:58:03 > Title: H.263 (01/05) : Video coding for low bit rate communication > URL: http://tinyurl.com/54t27 > ------------------------------------------------------------- > > -----Original Message----- > From: Gary Sullivan > Sent: Wednesday, April 06, 2024 5:34 PM > To: jvt-experts@mail.imtc.org; 'vceg@mail.imtc.org' > Cc: mp4-tech@lists.mpegif.org > Subject: The latest ITU-T video coding standards are now publicly > available > > [snip] > > Best Regards, > > Gary Sullivan > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From dsn2603 rediffmail.com Thu Apr 7 15:45:11 2005 From: dsn2603 rediffmail.com (sakthi narayanan) Date: Fri Apr 8 05:31:21 2005 Subject: [Mp4-tech] [audio]AAC Message-ID: <20050407144640.5460.qmail@webmail49.rediffmail.com> ? hi, u can download free faac aac source code from audiocoding.com. with regards, sakthi On Wed, 06 Apr 2024 Nobu Okuyama wrote : >Hi all, >I wonder if someone could point me to a site where source music coded with AAC (ADTS format preferred). > >Thank you, > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050407/2be06986/attachment-0001.html From garysull windows.microsoft.com Thu Apr 7 09:26:13 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 05:31:27 2005 Subject: [Mp4-tech] RE: The latest ITU-T video coding standards are now publicly available Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF6F526@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> The document JVT-M049 contains a closely-corresponding list-of-changes for corrigendum work. There are also a couple of extremely minor changes beyond that which are mentioned in the meeting report (JVT-M001). I don't know when the "prepublished" status will go away. My guess would be a month or two. -Gary +> -----Original Message----- +> From: Richard Wilding [mailto:richard.wilding@3dlabs.com] +> Sent: Thursday, April 07, 2024 5:28 AM +> To: Gary Sullivan +> Cc: mp4-tech@lists.mpegif.org +> Subject: Re: [Mp4-tech] RE: The latest ITU-T video coding +> standards are now publicly available +> +> Garry, +> +> I have just downloaded the latest ITU H.264 spec release. (H.264 +> [03/05] Advanced video coding for generic audiovisual +> services document) +> +> Do you know if there is a document listing the changes +> between this and +> the previous ITU release? Section 0.4 of the document refers to a +> second technical corrigendum in 2005, is this available as a +> separate +> document to avoid trawling through the 300+ pages for changes? +> +> Also, the ITU lists this as a prepublished document, any +> idea when the +> final edited version will be released? +> +> Many thanks, +> +> Richard +> +> Gary Sullivan wrote: +> > Some of the URLs got chopped up in the version of the +> message that I +> > received after sending it. In case that caused a problem +> for anyone, +> > here is a copy that uses abbreviated links: +> > +> > Good news - see below: +> > +> > Note: Make sure you know about the "3-free" program +> > (see http://ecs.itu.ch/cgi-bin/ebookshop). +> > +> > ------------------------------------------------------------- +> > Updated: 2024-04-05 23:58:03 +> > Title: H.264 (03/05) : Advanced video coding for generic +> audiovisual +> > services +> > URL: http://tinyurl.com/62t46 +> > ------------------------------------------------------------- +> > Updated: 2024-04-05 23:58:03 +> > Title: H.264.1 (03/05) : Conformance specification for +> H.264 advanced +> > video coding +> > URL: http://tinyurl.com/5qp7g +> > ------------------------------------------------------------- +> > Updated: 2024-04-05 23:58:03 +> > Title: H.264.2 (03/05) : Reference software for H.264 +> advanced video +> > coding +> > URL: http://tinyurl.com/6flcp +> > ------------------------------------------------------------- +> > Updated: 2024-04-05 23:58:03 +> > Title: H.263 (01/05) : Video coding for low bit rate +> communication +> > URL: http://tinyurl.com/54t27 +> > ------------------------------------------------------------- +> > +> > -----Original Message----- +> > From: Gary Sullivan +> > Sent: Wednesday, April 06, 2024 5:34 PM +> > To: jvt-experts@mail.imtc.org; 'vceg@mail.imtc.org' +> > Cc: mp4-tech@lists.mpegif.org +> > Subject: The latest ITU-T video coding standards are now publicly +> > available +> > +> > [snip] +> > +> > Best Regards, +> > +> > Gary Sullivan +> > +> > _______________________________________________ +> > NOTE: Please use clear subject lines for your posts. +> Include [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> > +> > Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From garysull windows.microsoft.com Thu Apr 7 14:56:25 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 05:31:33 2005 Subject: [Mp4-tech] RE: [jvt-experts] The latest ITU-T video coding standards are now publicly available Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DF6FB79@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Gang et al, Re: "Does the new published H.264 include the Amendment I ?" Yes, and it also includes the current state of corrigendum work (i.e., errata corrections). Best Regards, Gary Sullivan +> -----Original Message----- +> From: Gang Qiu [mailto:gqiu@vixs.com] +> Sent: Thursday, April 07, 2024 1:44 PM +> To: Gary Sullivan; jvt-experts@mail.imtc.org; vceg@mail.imtc.org +> Cc: mp4-tech@lists.mpegif.org +> Subject: RE: [jvt-experts] The latest ITU-T video coding +> standards are now publicly available +> +> Dear Gray, +> +> Does the new published H.264 include the Amendment I ? +> +> Thank you in advance. +> +> Best regards, +> Gang QIU +> +> -----Original Message----- +> From: Gary Sullivan [mailto:garysull@windows.microsoft.com] +> Sent: April 6, 2024 8:52 PM +> To: jvt-experts@mail.imtc.org; vceg@mail.imtc.org +> Cc: mp4-tech@lists.mpegif.org +> Subject: RE:[jvt-experts] The latest ITU-T video coding +> standards are now +> publicly available +> +> +> +> Some of the URLs got chopped up in the version of the message that I +> received after sending it. In case that caused a problem for anyone, +> here is a copy that uses abbreviated links: +> +> Good news - see below: +> +> Note: Make sure you know about the "3-free" program +> (see http://ecs.itu.ch/cgi-bin/ebookshop). +> +> ------------------------------------------------------------- +> Updated: 2024-04-05 23:58:03 +> Title: H.264 (03/05) : Advanced video coding for generic +> audiovisual +> services +> URL: http://tinyurl.com/62t46 +> ------------------------------------------------------------- +> Updated: 2024-04-05 23:58:03 +> Title: H.264.1 (03/05) : Conformance specification for +> H.264 advanced +> video coding +> URL: http://tinyurl.com/5qp7g +> ------------------------------------------------------------- +> Updated: 2024-04-05 23:58:03 +> Title: H.264.2 (03/05) : Reference software for H.264 +> advanced video +> coding +> URL: http://tinyurl.com/6flcp +> ------------------------------------------------------------- +> Updated: 2024-04-05 23:58:03 +> Title: H.263 (01/05) : Video coding for low bit rate communication +> URL: http://tinyurl.com/54t27 +> ------------------------------------------------------------- +> +> -----Original Message----- +> From: Gary Sullivan +> Sent: Wednesday, April 06, 2024 5:34 PM +> To: jvt-experts@mail.imtc.org; 'vceg@mail.imtc.org' +> Cc: mp4-tech@lists.mpegif.org +> Subject: The latest ITU-T video coding standards are now publicly +> available +> +> [snip] +> +> Best Regards, +> +> Gary Sullivan +> +> --- +> The use of the jvt-experts list is intended only for the video coding +> standardization work conducted by the Joint Video Team (JVT) +> of ISO/IEC +> JTC1/SC29/WG11 (MPEG) and ITU-T SG16 Q.6 (VCEG). +> +> +> +> IMPORTANT CONFIDENTIALITY NOTICE +> This message and any attached documents contain information +> from ViXS Systems, Inc. and are confidential and privileged +> and further subject to any confidentiality agreement between +> the parties. The information is intended to be viewed only +> by the individual(s) or entity(ies) to whom the message is +> addressed. If you are not the intended recipient, be aware +> that reading, disclosing, copying, distributing or using the +> contents of this transmission is prohibited. Please notify +> us immediately if you have received this transmission in +> error, and delete this message along with any attached files. +> +> --- +> The use of the jvt-experts list is intended only for the +> video coding standardization work conducted by the Joint +> Video Team (JVT) of ISO/IEC JTC1/SC29/WG11 (MPEG) and ITU-T +> SG16 Q.6 (VCEG). +> From magarwal neomagic.com Fri Apr 8 12:52:18 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Fri Apr 8 05:31:38 2005 Subject: [Mp4-tech] MPEG-4 Message-ID: <4256231A.50607@neomagic.com> Can anybody tell me what is System Decoder in MPEG-4. From kexu ee.cuhk.edu.hk Fri Apr 8 16:13:57 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Fri Apr 8 05:31:43 2005 Subject: [Mp4-tech][H.264]questions on search range Message-ID: <200504080713.j387DuYG025502@cuees8.ee.cuhk.edu.hk> Dear experts, In H.264 standard,is there any restriction on search range? And in JM reference software,is the "SearchRange" parameter specifies the search range in pixel unit or in motion vector unit? e.g,if SearchRange=16,this means search around 16 pixels or 16/4=4 pixels of quater-pixel inter-prediction? Many thanks in advance! Best regards, XU Ke From spsatendra gmail.com Fri Apr 8 15:36:37 2005 From: spsatendra gmail.com (Satendra) Date: Fri Apr 8 05:31:49 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc In-Reply-To: <7bca48b40504060302300a2f8e@mail.gmail.com> References: <7bca48b40504060302300a2f8e@mail.gmail.com> Message-ID: <59427232050408020640f955f8@mail.gmail.com> Hi Smitha, Shen, et al. I cant produce any better example, then FMO usage. First of all, I want to tell you that Filtering can be implemented in two ways in H264, 1) Frame based filtering, in which you will first decode the whole frame and then do the filteriing job, as a post processing job...but on a frame basis. 2) MB based filtering.. here you decode a MB and filter out its edges, here you need to take care of Intra coded MBs as Intra prediction needs unfiltered MBs. Now I want to talk about FMO.. Flexible MB Ordering. In case of FMO, you can only implement a Frame based filtering, why??? because you may not have MBs previous to current MB in scan order.. i.e. neighbouring MBs. To implement FMO with MB based filtering, you need to put constraints on filtering, that is use disable_deblocking_filter_idc, to disable filtering across slice edges. In this case you can filter the MBs and leave the edges if they are slice edges. I think my understanging is OK and will help you. Correct me, if I am wrong. Satendra On Apr 6, 2024 3:32 PM, Smitha Joseph wrote: > Hi, > > The H.264 standard specifies the parameter > disable_deblocking_filter_idc in the slice header which specifies > whether the deblocking filter is disabled for the > macroblock/macroblock edges in that slice. The details of how the > parameter disables filtering at the decoder side for the different > values is clear from the standard. My doubt is how does the encoder > decide whether to enable or disable filtering for each > macroblock/macroblock edges in a slice? > > Thanks, > Smitha Joseph > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > -- ----------------------------------------------------------------------------------------------------------------------------------- "We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." ------Larry Wall ----------------------------------------------------------------------------------------------------------------------------------- From mrukant gmail.com Fri Apr 8 14:55:47 2005 From: mrukant gmail.com (MRUKANT POPAT) Date: Fri Apr 8 05:31:55 2005 Subject: [Mp4-tech] MPEG-4 yahoo group for bangalore professionals--http://groups.yahoo.com/group/mpeg4bangalore/ Message-ID: <23155bfd0504080125548e9e5c@mail.gmail.com> hi all, I just created a YAHOO GROUP http://groups.yahoo.com/group/mpeg4bangalore/ for bangalore based professionals working in MPEG-4/H.264 domain for better and faster help and sharing of information. Developers from other parts of world are also welcome. regards, MRUKANT From kexu ee.cuhk.edu.hk Fri Apr 8 20:52:04 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Fri Apr 8 08:46:42 2005 Subject: [Mp4-tech][H.264]questions on search range Message-ID: <200504081152.j38Bq2YG012012@cuees8.ee.cuhk.edu.hk> Dear experts, In H.264 standard,is there any restriction on search range? And in JM reference software,is the "SearchRange" parameter specifies the search range in pixel unit or in motion vector unit? e.g,if SearchRange=16,this means search around 16 pixels or 16/4=4 pixels of quater-pixel inter-prediction? Many thanks in advance! Best regards, XU Ke From sdey pace.stpp.soft.net Fri Apr 8 18:28:14 2005 From: sdey pace.stpp.soft.net (Soumen Kumar Dey) Date: Fri Apr 8 08:48:53 2005 Subject: [Mp4-tech] MPEG-4 yahoo group for bangaloreprofessionals--http://groups.yahoo.com/group/mpeg4bangalore/ References: <23155bfd0504080125548e9e5c@mail.gmail.com> Message-ID: <00da01c53c32$3e719670$8564a8c0@psil> Why? Are u not getting better and faster help and sharing of information from this mailing list. What is the problem with this mailing list? ----- Original Message ----- From: "MRUKANT POPAT" To: Sent: Friday, April 08, 2024 1:55 PM Subject: [Mp4-tech] MPEG-4 yahoo group for bangaloreprofessionals--http://groups.yahoo.com/group/mpeg4bangalore/ > hi all, > > I just created a YAHOO GROUP > http://groups.yahoo.com/group/mpeg4bangalore/ > for bangalore based professionals working in MPEG-4/H.264 domain for > better and faster help and sharing of information. Developers from > other parts of world are also welcome. > > regards, > MRUKANT > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From magarwal neomagic.com Fri Apr 8 19:12:08 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Fri Apr 8 09:14:27 2005 Subject: [Mp4-tech] Mpeg4 Visual Message-ID: <42567C20.9020304@neomagic.com> Hi All, Could someone please clarify the following points related to dynamic testing of MPEG-4 Video Decoders ? Section 4.5.2 ("Dynamic Tests") of 14496-4 (I am referring to ISO/IEC 14496-4:Second edition) says "Dynamic tests are applied to check that all the reconstructed samples are output to the display process and that the timing of the output of the decoder's reconstructed samples to the display process conforms to the specification of subclause 7.13 of ISO/IEC 14496-2, and to verify that the decoder buffer verifier models (as defined by Annex D of ISO/IEC 14496-2, VBV, VCV and VMV specification) are not violated when the bits are delivered at the proper rate." My questions : (a) Subclause 7.13 of ISO/IEC 14496-2 refers to "3D Mesh Object Decoding". Is there a printing error in the text in 14496-4 ? (b) From what I can understand in Annex D in 14496-2, VBV, VCV and VMV are algorithms which are used for checking if a given bitstream obeys constraints defined in this Annex. How can these constraints be used to perform the dynamic testing of a Video Decoder ? Regards, Mohit From alexismt comcast.net Fri Apr 8 10:12:50 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Fri Apr 8 16:39:44 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc In-Reply-To: <7bca48b405040701017653f476@mail.gmail.com> Message-ID: <200504081612.j38GCshN020888@lists1.magma.ca> Dear Joseph, Actually the reference software also supports case 2. We just missed from saying this in the encoder.cfg and in the associated manual. In case you have doubts about parameters and their range, sometimes double checking the file configfile.h could help (i.e. the range is specified in columns 6 and 7 in the Map structure). Setting this parameter to 2 implies that no deblocking will be performed across slice boundaries if multiple slices are present within one picture. See section 8.7 for more details. Best regards, Alexis -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Smitha Joseph Sent: Thursday, April 07, 2024 1:01 AM To: mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc Hi, Thanks for the replies. I had an additional doubt. In the JVT code, the encoder configuration file has aparameter which sets the value disable_deblocking_filter_idc to 1 or 0. But the standard specifies that disable_deblocking_filter_idc can have a value 2 also, when does encoder set this parameter value to 2. Thanks, Smitha Joseph On Apr 7, 2024 12:31 PM, Adarsh Golikeri wrote: > Hi, > > In the encoder congiguration file, there are parameters for "Loop > filter" which allow for enabling/disabling the deblocking filter. If > the filter is enabled, then the boundary strength is chosen according > to : > > boundary is an intra-intra / inter-intra MB boundary : strength = 4 (strongest) > boundary is an intra-inter / inter-inter non-MB boundary (i.e within > an MB) : strength = 3 > boundary is an inter-inter boundary, with coded coefficients : strength = 2 > boundary between MBs using different reference pictures / different > number of reference pictures / have MV values differing by more than > one luma sample : strength = 1 > otherwise : strength = 0. > > Hope that helped, > > Bye ! > > Adarsh > > On Apr 6, 2024 3:02 AM, Smitha Joseph wrote: > > Hi, > > > > The H.264 standard specifies the parameter > > disable_deblocking_filter_idc in the slice header which specifies > > whether the deblocking filter is disabled for the > > macroblock/macroblock edges in that slice. The details of how the > > parameter disables filtering at the decoder side for the different > > values is clear from the standard. My doubt is how does the encoder > > decide whether to enable or disable filtering for each > > macroblock/macroblock edges in a slice? > > > > Thanks, > > Smitha Joseph > > _______________________________________________ > > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From Arnel.Periquet nokia.com Fri Apr 8 12:31:54 2005 From: Arnel.Periquet nokia.com (Arnel.Periquet@nokia.com) Date: Fri Apr 8 16:39:49 2005 Subject: [Mp4-tech] handling hint tracks in a client Message-ID: Hi, I have a general question about how hint tracks are handled on client such an MP4 player. I know the mp4 specs require hint tracks to be ignored for local playback since they are used to guide protocol-specific packetization. What I don't know is if hint tracks are used to guide depacketization on a client. In particular, are hint tracks typically ignored by clients in the streaming (network) case or are they actually used for depacketization? Does the server even send hint tracks to a client when it is streaming? Thanks, Arnel From garysull windows.microsoft.com Fri Apr 8 11:25:38 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 16:39:54 2005 Subject: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DFE8BD0@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Have you done any experiments with turning the deblocking filter off and on for video content that you think will be typical for this application at bit rates that you think will be typical? My impression is that the deblocking filter is more useful than some people expect it to be. -Gary ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Shen_sha(??) Sent: Wednesday, April 06, 2024 11:03 PM To: smithajo@gmail.com; 7bca48b40504060302300a2f8e@mail.gmail.com Cc: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: [video][H.264] Regardingdisable_deblocking_filter_idc The deblocking filter is to improve the picture quality and it's useful for low bit rate application. I think in the application of HDTV/DVD, this feature is not needed because the picure quality is so good that no improvement is needed. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050408/8d1fa432/attachment.html From garysull windows.microsoft.com Fri Apr 8 11:31:43 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 16:39:59 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DFE8BF9@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> The value of 2 for disable_deblocking_filter_idc has the effect of turning off the filtering of the boundaries between different slices, while filtering normally within each slice. The primary example uses for that are error resilience and so-called "gradual random access". It avoids having error/drift "mismatches" propagate across the boundary of slices. For example, an encoder can send an I slice and turn off the deblocking filter for the boundaries of the slice so that any mis-match in neighboring areas will not affect the I slice decoded region. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Smitha Joseph +> Sent: Thursday, April 07, 2024 1:01 AM +> To: mp4-tech@lists.mpegif.org +> Subject: Re: [Mp4-tech] [video][H.264] Regarding +> disable_deblocking_filter_idc +> +> Hi, +> +> Thanks for the replies. I had an additional doubt. +> In the JVT code, the encoder configuration file has aparameter which +> sets the value disable_deblocking_filter_idc to 1 or 0. But the +> standard specifies that disable_deblocking_filter_idc can +> have a value +> 2 also, when does encoder set this parameter value to 2. +> +> Thanks, +> Smitha Joseph +> +> On Apr 7, 2024 12:31 PM, Adarsh Golikeri wrote: +> > Hi, +> > +> > In the encoder congiguration file, there are parameters for "Loop +> > filter" which allow for enabling/disabling the deblocking +> filter. If +> > the filter is enabled, then the boundary strength is +> chosen according +> > to : +> > +> > boundary is an intra-intra / inter-intra MB boundary : +> strength = 4 (strongest) +> > boundary is an intra-inter / inter-inter non-MB boundary +> (i.e within +> > an MB) : strength = 3 +> > boundary is an inter-inter boundary, with coded +> coefficients : strength = 2 +> > boundary between MBs using different reference pictures / different +> > number of reference pictures / have MV values differing by +> more than +> > one luma sample : strength = 1 +> > otherwise : strength = 0. +> > +> > Hope that helped, +> > +> > Bye ! +> > +> > Adarsh +> > +> > On Apr 6, 2024 3:02 AM, Smitha Joseph wrote: +> > > Hi, +> > > +> > > The H.264 standard specifies the parameter +> > > disable_deblocking_filter_idc in the slice header which specifies +> > > whether the deblocking filter is disabled for the +> > > macroblock/macroblock edges in that slice. The details of how the +> > > parameter disables filtering at the decoder side for the +> different +> > > values is clear from the standard. My doubt is how does +> the encoder +> > > decide whether to enable or disable filtering for each +> > > macroblock/macroblock edges in a slice? +> > > +> > > Thanks, +> > > Smitha Joseph +> > > _______________________________________________ +> > > NOTE: Please use clear subject lines for your posts. +> Include [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> > > +> > > Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> > > +> > +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From garysull windows.microsoft.com Fri Apr 8 11:41:21 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 16:40:05 2005 Subject: [Mp4-tech][H.264]questions on search range Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DFE8C4B@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Yes, there is a restriction something like that in Annex A of the standard. A conforming bitstream must meet the following requirements: k) Vertical motion vector component range luma motion vectors does not exceed MaxVmvR in units of luma frame samples, where MaxVmvR is specified in Table A-1 NOTE - When chroma_format_idc is equal to 1 and the current macroblock is a field macroblock, the motion vector component range for chroma motion vectors may exceed MaxVmvR in units of luma frame samples, due to the method of deriving chroma motion vectors as specified in subclause 8.4.1.4. l) Horizontal motion vector range does not exceed the range of -2048 to 2047.75, inclusive, in units of luma samples. For levels 1 and 1b, the vertical range is [ 64,+63.75]. For levels 1.1 through 2, it is [ 128,+127.75]. For levels 2.1 to 3, it is [ 256,+255.75]. For levels above level 3, it is [ 512,+511.75]. I'm not that familiar with the reference software. I believe it has at least one control parameter that controls the size of the search region RELATIVE TO THE PREDICTION of the motion vector. That is a different kind of thing than a control over the magnitude of the resulting motion vector. I don't know whether the reference software offers control over that or not at this time. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Xu Ke +> Sent: Friday, April 08, 2024 12:14 AM +> To: mp4-tech +> Subject: [Mp4-tech][H.264]questions on search range +> +> Dear experts, +> In H.264 standard,is there any restriction on search range? +> And in JM reference software,is the "SearchRange" parameter +> specifies the search range in pixel unit or in motion vector +> unit? e.g,if SearchRange=16,this means search around 16 +> pixels or 16/4=4 pixels of quater-pixel inter-prediction? +> +> Many thanks in advance! +> +> Best regards, +> XU Ke +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From garysull windows.microsoft.com Fri Apr 8 11:47:40 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Apr 8 16:40:11 2005 Subject: [Mp4-tech] [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DFE8C6F@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Satendra et al, It is necessary to pay very close attention to the specified ordering of the processing of the samples in the deblocking filter, especially when performing the work in an "MB-based" fashion. You seem to already be aware of this (e.g., because of your comment about Intra), but others might not be, so I thought it might be worth mentioning. It is not just FMO but also ASO that affects the ability to do the deblocking in an "MB-based" fashion. (I'm sure you already know that too, but ...) Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Satendra +> Sent: Friday, April 08, 2024 2:07 AM +> To: Smitha Joseph +> Cc: mp4-tech@lists.mpegif.org +> Subject: Re: [Mp4-tech] [video][H.264] Regarding +> disable_deblocking_filter_idc +> +> Hi Smitha, Shen, et al. +> +> I cant produce any better example, then FMO usage. +> +> First of all, I want to tell you that Filtering can be implemented in +> two ways in H264, +> 1) Frame based filtering, in which you will first decode the whole +> frame and then do the filteriing job, as a post processing job...but +> on a frame basis. +> +> 2) MB based filtering.. here you decode a MB and filter out +> its edges, +> here you need to take care of Intra coded MBs as Intra prediction +> needs unfiltered MBs. +> +> Now I want to talk about FMO.. Flexible MB Ordering. +> +> In case of FMO, you can only implement a Frame based +> filtering, why??? +> because you may not have MBs previous to current MB in scan order.. +> i.e. neighbouring MBs. +> +> To implement FMO with MB based filtering, you need to put constraints +> on filtering, that is use disable_deblocking_filter_idc, to disable +> filtering across slice edges. In this case you can filter the MBs and +> leave the edges if they are slice edges. +> +> I think my understanging is OK and will help you. +> +> Correct me, if I am wrong. +> +> Satendra +> +> On Apr 6, 2024 3:32 PM, Smitha Joseph wrote: +> > Hi, +> > +> > The H.264 standard specifies the parameter +> > disable_deblocking_filter_idc in the slice header which specifies +> > whether the deblocking filter is disabled for the +> > macroblock/macroblock edges in that slice. The details of how the +> > parameter disables filtering at the decoder side for the different +> > values is clear from the standard. My doubt is how does the encoder +> > decide whether to enable or disable filtering for each +> > macroblock/macroblock edges in a slice? +> > +> > Thanks, +> > Smitha Joseph +> > _______________________________________________ +> > NOTE: Please use clear subject lines for your posts. +> Include [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> > +> > Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> > +> +> +> -- +> +> ------------------------------------------------------------- +> ------------------------------------------------------------- +> --------- +> "We all agree on the necessity of compromise. We just can't agree on +> when it's necessary to compromise." ------Larry Wall +> ------------------------------------------------------------- +> ------------------------------------------------------------- +> --------- +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From Ye-Kui.Wang nokia.com Sat Apr 9 02:05:11 2005 From: Ye-Kui.Wang nokia.com (Ye-Kui.Wang@nokia.com) Date: Fri Apr 8 18:46:25 2005 Subject: [Mp4-tech] handling hint tracks in a client Message-ID: <1C1F3D15859526459B4DD0A7A9B2268B072A4D@trebe101.NOE.Nokia.com> Hint tracks are only used to guide packetization, and the metadata information is not transmitted to the client side. Information helpful for depacketization is within RTP payload structures. BR, YK > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of ext > Sent: 08 April, 2005 19:32 > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] handling hint tracks in a client > > > Hi, > > I have a general question about how hint tracks are handled > on client such an MP4 player. > I know the mp4 specs require hint tracks to be ignored for > local playback > since they are used to guide protocol-specific packetization. > > What I don't know is if hint tracks are used to guide > depacketization on a client. > In particular, are hint tracks typically ignored by clients > in the streaming (network) case or > are they actually used for depacketization? Does the server > even send hint tracks to a > client when it is streaming? > > Thanks, > Arnel > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include > [audio, [video], [systems], [general] or another apppropriate > identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php From garysull windows.microsoft.com Fri Apr 8 16:43:49 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Sat Apr 9 12:56:56 2005 Subject: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460DFE91E0@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Bill et al, The amount of smoothing introduced by the deblocking filter design is highly adaptive to both the quantization fidelity (i.e., the quantization step size) and the amount of blockiness found in the pictures. Yes, it will gradually "turn itself off" as fidelity improves. There is also a very high degree of flexibility supported in the syntax to allow the encoder, at its discretion, to adjust the strength of the deblocking filter or turn it off at slice edges or turn it off completely. Best Regards, Gary Sullivan ________________________________ From: Mandel, Bill (NBC Universal) [mailto:bill.mandel@nbcuni.com] Sent: Friday, April 08, 2024 3:28 PM To: Gary Sullivan; Shen_sha(??); smithajo@gmail.com; 7bca48b40504060302300a2f8e@mail.gmail.com Cc: mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc I'd be interested in seeing or hearing about results of this also. My guess would be that for HD content at some point at or above 8-12 Mbps with H.264+FREX turning off deblocking would be an improvement. Would not the deblocking process just gradually extinguish itself to not applicable? Analogous to how audio bass emphasis is decreased on a stereo with the "loudness" button pressed but as you increase the volume past 30-50%? You can sort of see this indirectly between 4 Mbps (which must likely require deblocking) content: http://www.divxnetworks.com/solutions/hd/content.php and 8 Mbps content (which might still have deblocking, but it might be throttled back?) here: http://www.microsoft.com/windows/windowsmedia/content_provider/film/cont entshowcase.aspx http://download.microsoft.com/download/4/3/d/43dc9661-f69b-4735-9797-b3c 98199085e/MeetTheFockers_720p.exe ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Gary Sullivan Sent: Friday, April 08, 2024 10:26 AM To: Shen_sha(??); smithajo@gmail.com; 7bca48b40504060302300a2f8e@mail.gmail.com Cc: mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Re: [video][H.264] Regarding disable_deblocking_filter_idc Have you done any experiments with turning the deblocking filter off and on for video content that you think will be typical for this application at bit rates that you think will be typical? My impression is that the deblocking filter is more useful than some people expect it to be. -Gary ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Shen_sha(??) Sent: Wednesday, April 06, 2024 11:03 PM To: smithajo@gmail.com; 7bca48b40504060302300a2f8e@mail.gmail.com Cc: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: [video][H.264] Regardingdisable_deblocking_filter_idc The deblocking filter is to improve the picture quality and it's useful for low bit rate application. I think in the application of HDTV/DVD, this feature is not needed because the picure quality is so good that no improvement is needed. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050408/062258e8/attachment.html From a20590 motorola.com Mon Apr 11 12:23:06 2005 From: a20590 motorola.com (Yang Xiaowang-a20590) Date: Mon Apr 11 10:43:29 2005 Subject: [Mp4-tech] How to packet the mpeg4 buffer? Message-ID: Hi,all, Since my player only support to play a whole mp4 file , but I want to play the buffer(like streaming) when I read it from a file , I need to packet the buffer to make my player to think it as a full mp4 file. Thanks, Sureone -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050411/c61b5017/attachment.html From asic_soc 163.com Mon Apr 11 12:57:14 2005 From: asic_soc 163.com (=?gb2312?B?U2hlbl9zaGFcKMnyybNcKQ==?=) Date: Mon Apr 11 10:43:35 2005 Subject: [Mp4-tech][H.264] RE: questions on search range Message-ID: <003001c53e4a$8e1f5fd0$183210ac@TMT.COM> The search window size is expressed in pixel. So a search window size of 16 will accually search 64x64 possible motion vector because the H.264 has a ME precision of quarter pixel. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050411/c41fcb66/attachment.html From d_ravu yahoo.com Mon Apr 11 00:56:19 2005 From: d_ravu yahoo.com (Ravi) Date: Mon Apr 11 10:43:41 2005 Subject: [Mp4-tech] how to embedd subtitles inside mp4 file format Message-ID: <20050411065620.63376.qmail@web41908.mail.yahoo.com> Hi All, I need to know, how can I embed the subtitles inside MPEG-4 File Format. Do I need to have a seperate track for embedding subtitles. If seperate track then how do i sink Audio-Video with subtitles. Please guide me ........ Regards, Ravindra Dolas __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From asic_soc 163.com Mon Apr 11 16:39:32 2005 From: asic_soc 163.com (=?gb2312?B?U2hlbl9zaGFcKMnyybNcKQ==?=) Date: Mon Apr 11 10:43:46 2005 Subject: [Mp4-tech] [video][h.264] Can the ffmpeg be used as h.264 encoder? Message-ID: <007201c53e69$9c679750$183210ac@TMT.COM> Hi all experts, Could you tell me whether the ffmpeg(one open source software) can be used as h.264 encoder? For example, can it convert a avi video file into h.264 format?? thanks! Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050411/1ac7f33c/attachment.html From xia_jin_xiang 163.com Mon Apr 11 11:46:37 2005 From: xia_jin_xiang 163.com (=?gb2312?B?z8S98M/p?=) Date: Mon Apr 11 12:18:54 2005 Subject: [Mp4-tech] [video][MPEG-4] File formats of test video sequences Message-ID: <4259E50D.00006D.01347@m217.163.com> Hi, all, Some MPEG-4 test video sequences have been downloaded from the web: http://meru.cecs.missouri.edu/free_download/videos/, whose file postfixes are *.txt (for video files), *.0 (or 1 to 299, for Y files), and *.rgb (for RGB files), what are their file formats? I want to do some tests for motion estimation with these video sequences. Thanks in advance. Regards. xia jinxiang -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050411/891f9726/attachment.html From sridhar eccincorp.com Mon Apr 11 12:35:26 2005 From: sridhar eccincorp.com (Sridhar V. N. Kalubandi (Efficient Channel Coding)) Date: Mon Apr 11 12:20:01 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE2460DFE91E0@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: Hi, Not a technical question, but looking for Single chip solution for H.264. Understand that it is still nascent but any pointers to available *Single chip* solutions or better, comparisions, is highly appreciated. (Did find software and DSP based solutions but specifically looking for single chip ones) TIA -Sridhar From bam iis.fraunhofer.de Mon Apr 11 19:16:42 2005 From: bam iis.fraunhofer.de (Oliver Baum) Date: Mon Apr 11 17:05:25 2005 Subject: [Mp4-tech] how to embedd subtitles inside mp4 file format In-Reply-To: <20050411065620.63376.qmail@web41908.mail.yahoo.com> References: <20050411065620.63376.qmail@web41908.mail.yahoo.com> Message-ID: <425AA2EA.60100@iis.fraunhofer.de> Hi, Ravi! Regarding subtitles in MPEG-4 let me give You a pointer to a posting on this list from January 2004: Without having tried out the method described there I should note that the mentioned SRT files can e.g. be created with SubRip . Hope that helps! Regards, Oliver On 11.04.2024 08:56, Ravi wrote: > Hi All, > I need to know, how can I embed the subtitles inside MPEG-4 File Format. > Do I need to have a seperate track for embedding subtitles. > If seperate track then how do i sink Audio-Video with subtitles. > > Please guide me ........ > > Regards, > Ravindra Dolas -- Dipl.-Ing. Oliver Baum Multimedia Transport Group Dept. Audio Fraunhofer Institute for Integrated Circuits IIS Am Wolfsmantel 33 91058 Erlangen Germany E-mail: bam@iis.fraunhofer.de Phone: +49(0) 9131 / 776 - 319 Fax: +49(0) 9131 / 776 - 398 http://www.iis.fraunhofer.de/amm/ Meet us at these events: NAB Las Vegas, 18. - 21. April AES Barcelona, 28. - 31. May IFA Berlin, 2. - 7. September ... From ysramkumar yahoo.com Mon Apr 11 22:39:21 2005 From: ysramkumar yahoo.com (Srinivas Ramkumar Yadavalli) Date: Tue Apr 12 10:43:59 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: 6667 Message-ID: <20050412043921.86970.qmail@web54501.mail.yahoo.com> If you are looking for asic solutions, yes there are several companies out who is doing a demo of h.264 By the wasy are looking for encode or decode solution? For H.264 Decoders: STMicroelectronics., Inc www.st.com --- "Sridhar V. N. Kalubandi (Efficient Channel Coding)" wrote: > Hi, > > Not a technical question, but looking for Single > chip > solution for H.264. Understand that it is still > nascent but > any pointers to available *Single chip* solutions or > better, > comparisions, is highly appreciated. > (Did find software and DSP based solutions but > specifically looking for single chip ones) > > TIA > > -Sridhar > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From ysramkumar yahoo.com Mon Apr 11 22:45:55 2005 From: ysramkumar yahoo.com (Srinivas Ramkumar Yadavalli) Date: Tue Apr 12 10:44:05 2005 Subject: [Mp4-tech] [video][MPEG-4] File formats of test video sequences In-Reply-To: 6667 Message-ID: <20050412044556.49879.qmail@web54506.mail.yahoo.com> Xia, As far as I know, there are two file formats YUV 420 (which is widely used in H.264 encoders ALL the Y values --> followed by V values --> followed by U values. This is a planar YUV 420 format YUV 422 ( which is output of the mpeg-2 decoders) cr y cb y cr y cb y... the same sequence of values repeat. hope this helps Ramkumar --- �Ľ��� wrote: > Hi, all, > Some MPEG-4 test video sequences have been > downloaded from > the web: > http://meru.cecs.missouri.edu/free_download/videos/, > > whose file postfixes are *.txt (for video files), > *.0 (or 1 to 299, for Y files), > and *.rgb (for RGB files), what are their file > formats? I want to do > some tests for motion estimation with these video > sequences. > Thanks in advance. > Regards. > xia jinxiang> _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com From cyril.concolato enst.fr Tue Apr 12 10:28:13 2005 From: cyril.concolato enst.fr (Cyril Concolato) Date: Tue Apr 12 10:44:10 2005 Subject: [Mp4-tech] how to embedd subtitles inside mp4 file format In-Reply-To: <20050411065620.63376.qmail@web41908.mail.yahoo.com> References: <20050411065620.63376.qmail@web41908.mail.yahoo.com> Message-ID: <425B788D.6060607@enst.fr> Hi, You might want to have a look at the discussion on the gpac forum (http://gpac.sf.net). The web site as well contains examples on how to create mp4/3gp files with sync'd subtitles from SRT files or from Quicktime text format. Best, Cyril Concolato Ravi a ?crit : > Hi All, > I need to know, how can I embed the subtitles inside MPEG-4 File Format. > Do I need to have a seperate track for embedding subtitles. > If seperate track then how do i sink Audio-Video with subtitles. > > Please guide me ........ > > Regards, > Ravindra Dolas > > > > __________________________________ > Do you Yahoo!? > Yahoo! Small Business - Try our new resources site! > http://smallbusiness.yahoo.com/resources/ > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From tuukkat ee.oulu.fi Tue Apr 12 11:42:18 2005 From: tuukkat ee.oulu.fi (Tuukka Toivonen) Date: Tue Apr 12 10:44:15 2005 Subject: [Mp4-tech] [video][h.264] Can the ffmpeg be used as h.264 encoder? In-Reply-To: <007201c53e69$9c679750$183210ac@TMT.COM> References: <007201c53e69$9c679750$183210ac@TMT.COM> Message-ID: On Mon, 11 Apr 2005, [gb2312] Shen_sha\(????\) wrote: > Could you tell me whether the ffmpeg(one open source software) > can be used as h.264 encoder? For example, can it convert a > avi video file into h.264 format?? No, but there's a closely related project x264 which can do encoding. You need svn (subversion) to download the source. http://www.videolan.org/x264.html I made some RD-comparisons between x264 and JM 7.5c, here are the results: http://www.ee.oulu.fi/~tuukkat/mplayer/tests/x264test/readme.html (warning: embedded eps images. At least Konqueror can display them directly, with other browsers, you may download the images) Although x264 doesn't have real RD-optimization (it doesn't encode a block in all available modes to see the bit consumption/distortion but uses heuristics for speed) it isn't much worse than JM, with some sequences (Paris) even better. Also hundreds of times faster (real-time). From smithajo gmail.com Tue Apr 12 15:17:00 2005 From: smithajo gmail.com (Smitha Joseph) Date: Tue Apr 12 10:44:20 2005 Subject: [Mp4-tech] [Video][H.264]Regarding reference picture marking Message-ID: <7bca48b405041201473f222d79@mail.gmail.com> Hi, I had a doubt regarding the initialisation process for reference picture lists for B slices in frames (8.2.4.2.3). The process specifies that if reference list 1 has more than one entry and reference list 0 and reference list 1 are identical, the first two entries should be switched. Since the lists are identical why should there be a switching? Could you please explain the reason behind this? Thanks, Smitha Joseph From ralph.sperschneider iis.fraunhofer.de Tue Apr 12 15:18:38 2005 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Tue Apr 12 10:44:26 2005 Subject: [Mp4-tech] Re: [audio] Error calculation MPEG4 AAC LC Decoder output PCM samples In-Reply-To: <20050313055113.2588.qmail@web52009.mail.yahoo.com> References: <20050313055113.2588.qmail@web52009.mail.yahoo.com> Message-ID: <425BBC9E.2020808@iis.fraunhofer.de> mallikarjun rao wrote: > > Hi Ralph, > > Thanks for your reply. I am unable to get those test vectors. > After entered into ftp server, it shows 6 icons. Click on one of those, > whose name is > "drwx------+ 10 19004 512 Nov 8 13:11 mpeg4audio-conformance", > it shows nothing.(page con't be diaplayed). > > please solve this problem. > > Thanks > Mallikarjun > The problem needs to be solved by yourself: Simply don't use the IE, but any other ftp client. Ralph From sridhar eccincorp.com Tue Apr 12 10:16:22 2005 From: sridhar eccincorp.com (Sridhar V. N. Kalubandi (Efficient Channel Coding)) Date: Tue Apr 12 10:44:31 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: <20050412043921.86970.qmail@web54501.mail.yahoo.com> Message-ID: Looking for both Encoders and decoders. Actually, could trade higher decoder complexity for lesser power consumption and real-time adaptive response at the encoder, as on the fly adaptive encoding is needed. Thanks, -Sridhar -----Original Message----- From: Srinivas Ramkumar Yadavalli [mailto:ysramkumar@yahoo.com] Sent: Tuesday, April 12, 2024 12:39 AM To: Sridhar V. N. Kalubandi (Efficient Channel Coding); mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] Single Chip H.264 solution If you are looking for asic solutions, yes there are several companies out who is doing a demo of h.264 By the wasy are looking for encode or decode solution? For H.264 Decoders: STMicroelectronics., Inc www.st.com --- "Sridhar V. N. Kalubandi (Efficient Channel Coding)" wrote: > Hi, > > Not a technical question, but looking for Single > chip > solution for H.264. Understand that it is still > nascent but > any pointers to available *Single chip* solutions or > better, > comparisions, is highly appreciated. > (Did find software and DSP based solutions but > specifically looking for single chip ones) > > TIA > > -Sridhar > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From nicko via-telecom.com Tue Apr 12 09:32:10 2005 From: nicko via-telecom.com (Nobu Okuyama) Date: Tue Apr 12 12:30:14 2005 Subject: [Mp4-tech] [audio]Mp4Creator and 3g2 support Message-ID: <22DB07950E378646922C61A74FCEB6DF195974@exchsd1> Hi all, Does anyone know if Mp4 creator and Ivan & Menno ever support 3g2 file format in addition to mp4? I am looking for a utility to convert 3g2 file into AAC(ADTS). Thank you, From alexismt comcast.net Tue Apr 12 10:46:33 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Tue Apr 12 12:48:07 2005 Subject: [Mp4-tech] [Video][H.264]Regarding reference picture marking In-Reply-To: <7bca48b405041201473f222d79@mail.gmail.com> Message-ID: <200504121646.j3CGkcxq026892@lists1.magma.ca> Dear Joseph, This situation can happen when all references for a B slice are in the same direction (either forward or backward). i.e. simple example: I0-P1-P2-P3-B4.... in this case L0 would be {3, 2, 1,0) while L1 is made into {2, 3, 1, 0} based on this rule. This was basically considered in an attempt to exploit references in a more efficient way. Note that if this was not considered, you would most likely be penalizing the encoding process especially for the bipredictive case. Since the reference index is entropy coded, if no switching was performed biprediction may had to select a different reference for one of its lists and waste bits in coding the reference index (it is however possible to still perform biprediction using the same reference and even using different motion vectors and still get some advantage.). How likely do you think is getting a biprediction from references {N,N} (i.e. 3 and 3 in the above example)? Instead 3 and 2 are more likely to help prediction, and therefore you would want the bit cost to be as small as possible. Making the lists a bit more diverse can help in terms of how you exploit your lists and reference indices. Even for single list prediction you may notice that L1(ref0) and L0(ref0) would have also been identical and again maybe you are wasting something in terms of prediction (and bits) since the information you can find in one list can also be found in the other with similar (not usually same however) cost. Not sure if this is clear enough. Best regards, Alexis -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Smitha Joseph Sent: Tuesday, April 12, 2024 1:47 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] [Video][H.264]Regarding reference picture marking Hi, I had a doubt regarding the initialisation process for reference picture lists for B slices in frames (8.2.4.2.3). The process specifies that if reference list 1 has more than one entry and reference list 0 and reference list 1 are identical, the first two entries should be switched. Since the lists are identical why should there be a switching? Could you please explain the reason behind this? Thanks, Smitha Joseph _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From asic_soc 163.com Wed Apr 13 10:05:33 2005 From: asic_soc 163.com (Shen Sha) Date: Wed Apr 13 00:44:24 2005 Subject: [Mp4-tech] Single Chip H.264 solution Message-ID: <012501c53fc4$e72c30a0$183210ac@TMT.COM> Broadcom has such chip. Maybe ST Micron also has. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050413/0a6c950e/attachment.html From beba rtlab.cs.nthu.edu.tw Wed Apr 13 10:33:48 2005 From: beba rtlab.cs.nthu.edu.tw (�_����) Date: Wed Apr 13 00:44:30 2005 Subject: [Mp4-tech] MP4 file with more than one video tracks Message-ID: <20050413013348.GA22046@rtlab.cs.nthu.edu.tw> Hi, I'm developing a media player the supports mp4 file with MPEG4 simple profile but I've gotten problem when rendering a mp4 file with 2 video tracks and 1 audio track. Is this a legal mp4 file ? If yes, which video track should I render ? I have consulted the MP4 system standard 14496-1 Ch.13 to find some information. But the spec does not mention this. Can anyone tell me how to render this file ? Thanks ! Henry From ash_kgin yahoo.com Tue Apr 12 22:02:51 2005 From: ash_kgin yahoo.com (Ashwani Gupta) Date: Wed Apr 13 00:44:36 2005 Subject: [Mp4-tech] Re: single chip solution In-Reply-To: <200504121608.j3CG64KH022978@lists1.magma.ca> Message-ID: <20050413040252.65882.qmail@web30201.mail.mud.yahoo.com> hi, cradle tech. claims that they got single chip solution of H.264 on their CT3400 chip. The chip has multi DSP architecture. Visit the link. http://www.cradle.com/ regards, Ashwani --- mp4-tech-request@lists.mpegif.org wrote: > Send Mp4-tech mailing list submissions to > mp4-tech@lists.mpegif.org > > To subscribe or unsubscribe via the World Wide Web, > visit > http://lists.mpegif.org/mailman/listinfo/mp4-tech > or, via email, send a message with subject or body > 'help' to > mp4-tech-request@lists.mpegif.org > > You can reach the person managing the list at > mp4-tech-owner@lists.mpegif.org > > When replying, please edit your Subject line so it > is more specific > than "Re: Contents of Mp4-tech digest..." > > > Today's Topics: > > 1. [video][MPEG-4] File formats of test video > sequences > (=?gb2312?B?z8S98M/p?=) > 2. Single Chip H.264 solution > (Sridhar V. N. Kalubandi (Efficient Channel > Coding)) > 3. Re: how to embedd subtitles inside mp4 file > format (Oliver Baum) > 4. Re: Single Chip H.264 solution (Srinivas > Ramkumar Yadavalli) > 5. Re: [video][MPEG-4] File formats of test video > sequences > (Srinivas Ramkumar Yadavalli) > 6. Re: how to embedd subtitles inside mp4 file > format > (Cyril Concolato) > 7. Re: [video][h.264] Can the ffmpeg be used as > h.264 encoder? > (Tuukka Toivonen) > 8. [Video][H.264]Regarding reference picture > marking (Smitha Joseph) > 9. Re: [audio] Error calculation MPEG4 AAC LC > Decoder output PCM > samples (Ralph Sperschneider) > 10. RE: Single Chip H.264 solution > (Sridhar V. N. Kalubandi (Efficient Channel > Coding)) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 11 Apr 2024 10:46:37 +0800 (CST) > From: "=?gb2312?B?z8S98M/p?=" > > Subject: [Mp4-tech] [video][MPEG-4] File formats of > test video > sequences > To: mp4-tech@lists.mpegif.org > Message-ID: <4259E50D.00006D.01347@m217.163.com> > Content-Type: text/plain; charset="gb2312" > > Hi, all, > Some MPEG-4 test video sequences have been > downloaded from > the web: > http://meru.cecs.missouri.edu/free_download/videos/, > > whose file postfixes are *.txt (for video files), > *.0 (or 1 to 299, for Y files), > and *.rgb (for RGB files), what are their file > formats? I want to do > some tests for motion estimation with these video > sequences. > Thanks in advance. > Regards. > xia jinxiang > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > /pipermail/mp4-tech/attachments/20050411/891f9726/attachment-0001.html > > ------------------------------ > > Message: 2 > Date: Mon, 11 Apr 2024 11:35:26 -0400 > From: "Sridhar V. N. Kalubandi \(Efficient Channel > Coding\)" > > Subject: [Mp4-tech] Single Chip H.264 solution > To: > Message-ID: > > Content-Type: text/plain; charset="us-ascii" > > Hi, > > Not a technical question, but looking for Single > chip > solution for H.264. Understand that it is still > nascent but > any pointers to available *Single chip* solutions or > better, > comparisions, is highly appreciated. > (Did find software and DSP based solutions but > specifically looking for single chip ones) > > TIA > > -Sridhar > > ------------------------------ > > Message: 3 > Date: Mon, 11 Apr 2024 18:16:42 +0200 > From: Oliver Baum > Subject: Re: [Mp4-tech] how to embedd subtitles > inside mp4 file format > To: Ravi > Cc: mp4-tech@lists.mpegif.org, > mpeg4bangalore@yahoogroups.com > Message-ID: <425AA2EA.60100@iis.fraunhofer.de> > Content-Type: text/plain; charset=ISO-8859-1; > format=flowed > > Hi, Ravi! > > Regarding subtitles in MPEG-4 let me give You a > pointer to a posting on > this list from January 2004: > > > Without having tried out the method described there > I should note that > the mentioned SRT files can e.g. be created with > SubRip > . > > Hope that helps! > > Regards, > > Oliver > > On 11.04.2024 08:56, Ravi wrote: > > Hi All, > > I need to know, how can I embed the subtitles > inside MPEG-4 File Format. > > Do I need to have a seperate track for embedding > subtitles. > > If seperate track then how do i sink Audio-Video > with subtitles. > > > > Please guide me ........ > > > > Regards, > > Ravindra Dolas > > -- > Dipl.-Ing. Oliver Baum > > Multimedia Transport Group > Dept. Audio > Fraunhofer Institute for Integrated Circuits IIS > > Am Wolfsmantel 33 > 91058 Erlangen > Germany > > E-mail: bam@iis.fraunhofer.de > Phone: +49(0) 9131 / 776 - 319 > Fax: +49(0) 9131 / 776 - 398 > > http://www.iis.fraunhofer.de/amm/ > > > Meet us at these events: > > NAB Las Vegas, 18. - 21. April > AES Barcelona, 28. - 31. May > IFA Berlin, 2. - 7. September > ... > > ------------------------------ > > Message: 4 > Date: Mon, 11 Apr 2024 21:39:21 -0700 (PDT) > From: Srinivas Ramkumar Yadavalli > > Subject: Re: [Mp4-tech] Single Chip H.264 solution > To: "Sridhar V. N. Kalubandi \(Efficient Channel > Coding\)" > , mp4-tech@lists.mpegif.org > Message-ID: > <20050412043921.86970.qmail@web54501.mail.yahoo.com> > Content-Type: text/plain; charset=us-ascii > > If you are looking for asic solutions, yes there are > several companies out who is doing a demo of h.264 > > By the wasy are looking for encode or decode > solution? > === message truncated === __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 From gripened gmail.com Wed Apr 13 11:51:07 2005 From: gripened gmail.com (Jayant Chauhan) Date: Wed Apr 13 09:21:35 2005 Subject: [Mp4-tech] [SYSTEM]Source code for Transport Stream Demuxing Message-ID: <5b996acb050412222164ec9bff@mail.gmail.com> Hey fellas Does anyone have any pointers to the code/specs(all the header info) for Transport Stream Demultiplexing?! Am in dire need for a standalone demuxer with regards Jayant From gripened gmail.com Wed Apr 13 12:48:37 2005 From: gripened gmail.com (Jayant Chauhan) Date: Wed Apr 13 09:24:11 2005 Subject: [Mp4-tech] MP4 file with more than one video tracks In-Reply-To: <20050413013348.GA22046@rtlab.cs.nthu.edu.tw> References: <20050413013348.GA22046@rtlab.cs.nthu.edu.tw> Message-ID: <5b996acb05041223186dda86f0@mail.gmail.com> HeyEven I am facing the same problem, because if there are multiple videotracks, I don't know how to use the time stamps to present it all.Currently I am only playing the last video track I encounter. On 4/13/05, ������ wrote:> Hi,> > I'm developing a media player the supports mp4 file with MPEG4 simple> profile> but I've gotten problem when rendering a mp4 file with 2 video tracks> and 1 audio track.> Is this a legal mp4 file ? If yes, which video track should I render ?> I have consulted the MP4 system standard 14496-1 Ch.13 to> find some information. But the spec does not mention this.> > Can anyone tell me how to render this file ?> > Thanks !> > Henry> > _______________________________________________> NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have.> > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php> From cyril.concolato enst.fr Wed Apr 13 09:48:37 2005 From: cyril.concolato enst.fr (Cyril Concolato) Date: Wed Apr 13 09:25:08 2005 Subject: [Mp4-tech] MP4 file with more than one video tracks In-Reply-To: <20050413013348.GA22046@rtlab.cs.nthu.edu.tw> References: <20050413013348.GA22046@rtlab.cs.nthu.edu.tw> Message-ID: <425CC0C5.70401@enst.fr> Hi, If you're file is compliant to MPEG-4 Systems, it should contain a BIFS track which contains the composition instructions among which you will find: scene size (w,h) position and size of the video to be displayed and time at which they should be displayed. If the file does not contain the BIFS track, then it is not a compliant MP4 file, and to my knowledge behavior is undefined (except maybe for Quicktime). Best, Cyril Concolato ?_???? a ?crit : > Hi, > > I'm developing a media player the supports mp4 file with MPEG4 simple > profile > but I've gotten problem when rendering a mp4 file with 2 video tracks > and 1 audio track. > Is this a legal mp4 file ? If yes, which video track should I render ? > I have consulted the MP4 system standard 14496-1 Ch.13 to > find some information. But the spec does not mention this. > > Can anyone tell me how to render this file ? > > Thanks ! > > Henry > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From ysramkumar yahoo.com Wed Apr 13 00:52:30 2005 From: ysramkumar yahoo.com (Srinivas Ramkumar Yadavalli) Date: Wed Apr 13 09:25:55 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: 6667 Message-ID: <20050413065230.79476.qmail@web54501.mail.yahoo.com> u r right!! on the decoder side of h.264... --- Shen Sha wrote: > > > Broadcom has such chip. Maybe ST Micron also has. > > Shen Sha> _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From jamcclenny gmail.com Wed Apr 13 09:52:52 2005 From: jamcclenny gmail.com (John McClenny) Date: Wed Apr 13 10:25:58 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: References: <91D7F2CEE3425A4A9D11311D09FCE2460DFE91E0@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: On 4/11/05, Sridhar V. N. Kalubandi (Efficient Channel Coding) wrote: > Hi, > > Not a technical question, but looking for Single chip > solution for H.264. Understand that it is still nascent but > any pointers to available *Single chip* solutions or better, > comparisions, is highly appreciated. > (Did find software and DSP based solutions but > specifically looking for single chip ones) Decoder Side: Sigma Designs ST Micro Broadcom From alvarez ac.upc.edu Wed Apr 13 17:26:43 2005 From: alvarez ac.upc.edu (Mauricio Alvarez) Date: Wed Apr 13 14:42:51 2005 Subject: [Mp4-tech] [h264] coding parameters for HD Message-ID: <425D2C23.3070603@ac.upc.edu> Hi. I am making some experiments on high definition video decoding using the JM-9.3 H.264 reference decoder. For that I am coding some test HD sequences (1280x720) using the reference encoder. My target application is HD video for playback reproduction like HD-DVD (or Blu-ray) and broadcast (satellite HDTV). I am using the FRExt High profile with level 4.0. and I am defining the best encoding paramters for HD. In especial I want to know what can be a good frame period in terms of I, P and B frames. In the bin directory of the JM software there is a file called encoder_highquality_HD.cfg that suggest the use of: IntraPeriod = 4 NumberBFrames = 2 FrameSkip = 2 That will generate a sequence like: I-P-B-B-P-B-B-P-B-B-I-P-B-B-P-B-B-P-B-B... Is this configuration adecuated for the mentioned HD applications? Thanks for your attention Mauricio Alvarez From guillaume_etorre realmagic.fr Wed Apr 13 17:44:43 2005 From: guillaume_etorre realmagic.fr (Guillaume Etorre) Date: Wed Apr 13 14:42:56 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: <012501c53fc4$e72c30a0$183210ac@TMT.COM> References: <012501c53fc4$e72c30a0$183210ac@TMT.COM> Message-ID: <425D305B.40504@realmagic.fr> Sigma Designs has demonstrated its SMP8630 standalone HD H.264 chip at CES in January. Best regards, -- Guillaume Etorre Sigma Designs, Inc. Shen Sha wrote: > > Broadcom has such chip. Maybe ST Micron also has. > Shen Sha > >------------------------------------------------------------------------ > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050413/7983ced3/attachment.html From jmasuhr web.de Wed Apr 13 20:49:39 2005 From: jmasuhr web.de (Julian Masuhr) Date: Wed Apr 13 14:43:03 2005 Subject: [Mp4-tech] Interactive navigation in video according to semantic relation Message-ID: <001c01c54051$2c113120$0200a8c0@jabba> Hi all ! I have used XMTBatch ("IBM Toolkit for MPEG-4") to create a clickable video. That was pretty easy with help of the high-level XMT-O language. In this mp4-file one can click a moving character (extracted with chromakey) in front of a video-background. The result is that a different media-object is being played (a mp3 in this case). Now i want to add Meta-Informations to my Video for the purpose of - let me call it - "Interactive Navigation in Video". I know that XMT-O is for content-creation, but is it sufficient for adding Meta-Infos to a scene? I doubt it. My goal is to provide Meta-Infos to different Objects (e.g. persons, buildings, backgrounds), so that you can find (and navigate to) similar Objects in parallel Videostreams. The scenario would be: 1 Parallel running Videostreams 2 Clickable Objects in these Videostreams (prepared via Bluebox/Chromakey-Extraction) 3 Data Description Files - about the above mentioned Objects - that can be linked together 4 Meta-Infos about these Objects is being displayed when Hoovering an Object 5 Jumping from subscene A in Video_001 to subscene B in Video_002 according to the semantic link in the Data Description Files. Are there existing workarounds? What technology is for steps 3 to 5 appropriate? MPEG-J, JavaSwing, BIFS, XMT-O/XMT-A, VRML, X-Link, MPEG-7-features? I have lost track of all those existing technologies! Thanks for any help. julian My preparation: I read many www-sources regarding MPEG-4 and the first 6 chapters from the fantastic "MPEG-4 Book". I also tried unsuccessfully to make the ISO-Reference Software work. To be honest i am overwhelmed by the many different technologies provided by MPEG-4, but i am also fascinated by it. To my person: i am a student in media-informatics and am currently working on my bachelor-thesis. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050413/131842cd/attachment.html From chuck cradle.com Thu Apr 14 09:58:48 2005 From: chuck cradle.com (Charles A. Fox) Date: Thu Apr 14 14:06:04 2005 Subject: [Mp4-tech] Re: single chip solution Message-ID: <2589822B3D9BA749A7434A636939D4D15F6A03@pelican.cradle.local> Cradle has H.264 SIF 30fps encode on CT3400. The new CT3616 will support H.264 D1 30fps encode main profile but its not available until Q305. -----Original Message----- From: Ashwani Gupta [mailto:ash_kgin@yahoo.com] Sent: Tuesday, April 12, 2024 9:03 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: single chip solution hi, cradle tech. claims that they got single chip solution of H.264 on their CT3400 chip. The chip has multi DSP architecture. Visit the link. http://www.cradle.com/ regards, Ashwani --- mp4-tech-request@lists.mpegif.org wrote: > Send Mp4-tech mailing list submissions to > mp4-tech@lists.mpegif.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.mpegif.org/mailman/listinfo/mp4-tech > or, via email, send a message with subject or body 'help' to > mp4-tech-request@lists.mpegif.org > > You can reach the person managing the list at > mp4-tech-owner@lists.mpegif.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Mp4-tech digest..." > > > Today's Topics: > > 1. [video][MPEG-4] File formats of test video sequences > (=?gb2312?B?z8S98M/p?=) > 2. Single Chip H.264 solution > (Sridhar V. N. Kalubandi (Efficient Channel > Coding)) > 3. Re: how to embedd subtitles inside mp4 file format (Oliver Baum) > 4. Re: Single Chip H.264 solution (Srinivas Ramkumar Yadavalli) > 5. Re: [video][MPEG-4] File formats of test video sequences > (Srinivas Ramkumar Yadavalli) > 6. Re: how to embedd subtitles inside mp4 file format > (Cyril Concolato) > 7. Re: [video][h.264] Can the ffmpeg be used as > h.264 encoder? > (Tuukka Toivonen) > 8. [Video][H.264]Regarding reference picture marking (Smitha > Joseph) > 9. Re: [audio] Error calculation MPEG4 AAC LC > Decoder output PCM > samples (Ralph Sperschneider) > 10. RE: Single Chip H.264 solution > (Sridhar V. N. Kalubandi (Efficient Channel > Coding)) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 11 Apr 2024 10:46:37 +0800 (CST) > From: "=?gb2312?B?z8S98M/p?=" > > Subject: [Mp4-tech] [video][MPEG-4] File formats of test video > sequences > To: mp4-tech@lists.mpegif.org > Message-ID: <4259E50D.00006D.01347@m217.163.com> > Content-Type: text/plain; charset="gb2312" > > Hi, all, > Some MPEG-4 test video sequences have been downloaded from the web: > http://meru.cecs.missouri.edu/free_download/videos/, > > whose file postfixes are *.txt (for video files), *.0 (or 1 to 299, > for Y files), and *.rgb (for RGB files), what are their file formats? > I want to do some tests for motion estimation with these video > sequences. > Thanks in advance. > Regards. > xia jinxiang > -------------- next part -------------- An HTML attachment was > scrubbed... > URL: > /pipermail/mp4-tech/attachments/20050411/891f9726/attachment-0001.html > > ------------------------------ > > Message: 2 > Date: Mon, 11 Apr 2024 11:35:26 -0400 > From: "Sridhar V. N. Kalubandi \(Efficient Channel Coding\)" > > Subject: [Mp4-tech] Single Chip H.264 solution > To: > Message-ID: > > Content-Type: text/plain; charset="us-ascii" > > Hi, > > Not a technical question, but looking for Single chip solution for > H.264. Understand that it is still nascent but any pointers to > available *Single chip* solutions or better, comparisions, is highly > appreciated. > (Did find software and DSP based solutions but specifically looking > for single chip ones) > > TIA > > -Sridhar > > ------------------------------ > > Message: 3 > Date: Mon, 11 Apr 2024 18:16:42 +0200 > From: Oliver Baum > Subject: Re: [Mp4-tech] how to embedd subtitles inside mp4 file format > To: Ravi > Cc: mp4-tech@lists.mpegif.org, > mpeg4bangalore@yahoogroups.com > Message-ID: <425AA2EA.60100@iis.fraunhofer.de> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi, Ravi! > > Regarding subtitles in MPEG-4 let me give You a pointer to a posting > on this list from January 2004: > > > Without having tried out the method described there I should note that > the mentioned SRT files can e.g. be created with SubRip > . > > Hope that helps! > > Regards, > > Oliver > > On 11.04.2024 08:56, Ravi wrote: > > Hi All, > > I need to know, how can I embed the subtitles > inside MPEG-4 File Format. > > Do I need to have a seperate track for embedding > subtitles. > > If seperate track then how do i sink Audio-Video > with subtitles. > > > > Please guide me ........ > > > > Regards, > > Ravindra Dolas > > -- > Dipl.-Ing. Oliver Baum > > Multimedia Transport Group > Dept. Audio > Fraunhofer Institute for Integrated Circuits IIS > > Am Wolfsmantel 33 > 91058 Erlangen > Germany > > E-mail: bam@iis.fraunhofer.de > Phone: +49(0) 9131 / 776 - 319 > Fax: +49(0) 9131 / 776 - 398 > > http://www.iis.fraunhofer.de/amm/ > > > Meet us at these events: > > NAB Las Vegas, 18. - 21. April > AES Barcelona, 28. - 31. May > IFA Berlin, 2. - 7. September > ... > > ------------------------------ > > Message: 4 > Date: Mon, 11 Apr 2024 21:39:21 -0700 (PDT) > From: Srinivas Ramkumar Yadavalli > > Subject: Re: [Mp4-tech] Single Chip H.264 solution > To: "Sridhar V. N. Kalubandi \(Efficient Channel Coding\)" > , mp4-tech@lists.mpegif.org > Message-ID: > <20050412043921.86970.qmail@web54501.mail.yahoo.com> > Content-Type: text/plain; charset=us-ascii > > If you are looking for asic solutions, yes there are several companies > out who is doing a demo of h.264 > > By the wasy are looking for encode or decode solution? > === message truncated === __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From jiazhaox mobilesoft.com.cn Fri Apr 15 10:04:44 2005 From: jiazhaox mobilesoft.com.cn (JazryXu) Date: Fri Apr 15 09:13:45 2005 Subject: [video] [Mp4-tech]MP4 file format References: <2589822B3D9BA749A7434A636939D4D15F6A03@pelican.cradle.local> Message-ID: <001301c54157$1d3af350$240aa8c0@JazryXu> Hi,All: Who can tell me the Mp4(.mp4) file format detail description or relative specification, I could not got the IS/IEC 14496-14 standard specification . Thanks for your attention Best Regards! Jazry From kexu ee.cuhk.edu.hk Fri Apr 15 22:33:45 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Fri Apr 15 11:11:37 2005 Subject: [Mp4-tech][H.264]Trace file format Message-ID: <200504151333.j3FDXgYG018986@cuees8.ee.cuhk.edu.hk> Dear experts, Currently I am studying the trace file dumped out by decoder where I got confused about the format of trace file.For example: 1) @203 Luma # c & tr.1s vlc=1 #c=0 #t1=0 11 ( 3) @205 Luma # c & tr.1s vlc=0 #c=0 #t1=0 1 ( 1) What's the meaning of "vlc=1" and "vlc=0" in the above description? Why the vlc values are not equal? 2) @239 Luma lev (0,3) k=1 vlc=0 1 ( 1) What's the meaning of "lev(0,3)","k=1" in the above description? I can see many "vlc=xxx" in the trace file,what does "vlc" here refer to? Many thanks in advance! Best regards, XU Ke From ksuehring web.de Fri Apr 15 18:21:46 2005 From: ksuehring web.de (Karsten Suehring) Date: Sat Apr 16 13:52:28 2005 Subject: [Mp4-tech] [Video][H.264] Decoded Reference Pic Marking (JM 9.4) In-Reply-To: References: Message-ID: <425FDC0A.60909@web.de> Reshma, sorry for the late reply. You are right, I will include a fix in the next version. Best regards, Karsten Reshma Prasanna wrote: > Dear Karsten, > With reference to your reply below, I have the following question about > the reference software JM version 9.4: > > In the file mbuffer.c, in the function init_lists(), if the current frame > is an I frame, the updation of picNum for short term reference frames is > performed and after that the code > > if ((currSliceType == I_SLICE)||(currSliceType == SI_SLICE)) > { > listXsize[0] = 0; > listXsize[1] = 0; > return; > } > > causes the function to return. The updation of the long term picNum i.e. > > dpb.fs_ltref[i]->frame->long_term_pic_num = > dpb.fs_ltref[i]->frame->long_term_frame_idx; > > is done only if the current frame is a P frame. > > Hence, if the previous frame was marked as a long term frame and the > current frame is an I frame and mmco operations contain mmco = 2 > (longTermPicNum = 0), then what should be done, is to set any long term > picture with longTermPicNum = 0 as unused for reference. But in this case, > the frame previous to the current I frame is also set as unused for > reference because the longTermPicNum has not been set equal to > longTermFrameIdx(since the current frame frame is I), and the default > value for longTermPicNum = 0. > > I would think that the assignment of longTermPicIdx to longTermFramePicNum > for all long term frames in the DPB should also be done if the current > frame is an I frame. Is this correct? > > > Thanks & Best Regards, > Reshma. > > > On Wed, 23 Mar 2005, Karsten Suehring wrote: > > >>Dear Reshma, >> >>please see my comments inline. >> >>Reshma Prasanna wrote: >> >>>Dear H.264 Experts, >>> >>>I would really appreciate it if anyone could answer my questions. >>> >>>Qn 1) Decoded reference picture marking. >>>Clause 8 of the H.264 std specifies that the only restriction on invoking >>>the decoded reference picture marking process is that the decoded picture >>>must be a reference picture, there are no constraints on the type of frame >>>i.e. I, P, IDR etc. >>> >>>Can the adaptive memory control decoded reference picture marking process >>>be invoked if the decoded picture is an I frame but not IDR? >> >>Yes, that's possible. >> >> >>>If yes, then consider the case when there are decoded reference pictures >>>stored in the DPB, the current decoded picture is an I frame(not IDR) and >>>MMCO = 1 is decoded. This means that some short term ref picture with >>>picNum = CurrPicNum - (difference_of_pic_nums_minus_1 + 1) is to be marked >>>as "unused for reference". Since the decoded picture has only I slices, >>>the reference lists have not been constructed and hence picNum = >>>FrameNumWrap has not been calculated for any short tm reference frames >>>w.r.t the current picture's frame_num. Then how will the mmco = 1 >>>operation be properly executed? The same question holds with any other >>>mmco operation that requires comparison to reference lists, if the current >>>decoded picture is an I frame. >> >>This problem has already been identified. The text was fixed in the >>first corrigendum to invoke the FrameNumWrap calculation also for I slices. >> >>This change should already be included in the recommendation/standard >>version currently published by ITU and ISO. >> >> >>>Qn 2) Consider this case in a H.264 encoder: >>>The DPB is full and a reconstructed(decoded) picture (not IDR) is to be >>>inserted into the DPB. If adaptive_ref_pic_marking_mode_flag = 0, then >>>sliding window process will mark the short tm reference frm with smallest >>>value of FrameNumWrap as "unused". But if say, the encoder wishes to mark >>>the current picture as "used for long term reference", since the picture >>>is not IDR, then adaptive_ref_pic_marking_mode_flag must be set equal to 1 >>>and mmco = 6 must be used. In this case, sliding window process is not >>>invoked and hence none of the frames in the DPB will be marked as "unused >>>for reference". There will not be any space in the DPB for the current >>>frame. >> >>The unmarking must be signaled explicitly in that case. >> >> >>>My understanding is that the encoder must then find which short term frame >>>has smallest frameNumWrap and send another mmco = 1 to set this short tm >>>reference frame as "unused" so that the current reconstructed frame can be >>>inserted into the DPB. Is this correct? >> >>The encoder is free to decide which picture is marked "unused for >>reference" (short or long-term) as long as the unmarking is done before >>marking the current picture. That doesn't need to be the short-term >>frame with the smallest value of frameNumWrap. >> >>The corrigendum text also contains some clarifications which commands >>are allowed in which order and at which points the maximum number of >>reference frames constraint is checked. >> >>I would suggest reading the updated text on MMCO. >> >>Best regards, >>Karsten >> > > > > "SASKEN RATED THE BEST EMPLOYER IN THE COUNTRY by the BUSINESS TODAY Mercer Survey 2004" > > > SASKEN BUSINESS DISCLAIMER > This message may contain confidential, proprietary or legally Privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, Disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited ("Sasken") unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email From ysramkumar yahoo.com Fri Apr 15 09:29:46 2005 From: ysramkumar yahoo.com (Srinivas Ramkumar Yadavalli) Date: Sat Apr 16 13:52:34 2005 Subject: [Mp4-tech] Single Chip H.264 solution In-Reply-To: 6667 Message-ID: <20050415152946.72726.qmail@web54506.mail.yahoo.com> YES, STMicro also has a solution already. Ramkumar --- Guillaume Etorre wrote: > Sigma Designs has demonstrated its SMP8630 > standalone HD H.264 chip at > CES in January. > > Best regards, > > -- > Guillaume Etorre > Sigma Designs, Inc. > > Shen Sha wrote: > > > > > Broadcom has such chip. Maybe ST Micron also has. > > Shen Sha > > > >------------------------------------------------------------------------ > > > >_______________________________________________ > >NOTE: Please use clear subject lines for your > posts. Include [audio, [video], [systems], [general] > or another apppropriate identifier to indicate the > type of question you have. > > > >Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From ysramkumar yahoo.com Fri Apr 15 09:33:50 2005 From: ysramkumar yahoo.com (Srinivas Ramkumar Yadavalli) Date: Sat Apr 16 13:52:40 2005 Subject: [Mp4-tech] [h264] coding parameters for HD In-Reply-To: 6667 Message-ID: <20050415153350.13201.qmail@web54509.mail.yahoo.com> Is there a WAY we can control the BIT Rate of the encoded output using JVT reference software? Is encoded bit rate always depend upon the content of each frame? Ramkumar --- Mauricio Alvarez wrote: > Hi. > > I am making some experiments on high definition > video decoding using > the JM-9.3 H.264 reference decoder. For that I am > coding some test HD > sequences (1280x720) using the reference encoder. > My target application > is HD video for playback reproduction like HD-DVD > (or Blu-ray) and > broadcast (satellite HDTV). > > I am using the FRExt High profile with level 4.0. > and I am defining the > best encoding paramters for HD. In especial I want > to know what can be a > good frame period in terms of I, P and B frames. > > In the bin directory of the JM software there is a > file called > encoder_highquality_HD.cfg that suggest the use of: > IntraPeriod = 4 > NumberBFrames = 2 > FrameSkip = 2 > > That will generate a sequence like: > I-P-B-B-P-B-B-P-B-B-I-P-B-B-P-B-B-P-B-B... > > Is this configuration adecuated for the mentioned HD > applications? > > Thanks for your attention > > Mauricio Alvarez > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From amylu cmu.edu Fri Apr 15 14:53:14 2005 From: amylu cmu.edu (Amy, Mei-Hsuan Lu) Date: Sat Apr 16 13:52:46 2005 Subject: [Mp4-tech] how to convert cif to qcif Message-ID: <000001c541e3$ffc9e410$82efed80@csdlaptop> Hello folks, Does any one know any good algorithm/utility to convert CIF format to QCIF format (yuv file)? Thanks Meihsuan Lu -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050415/43d44817/attachment.html From kexu ee.cuhk.edu.hk Sat Apr 16 17:55:05 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Sat Apr 16 13:52:57 2005 Subject: [Mp4-tech][Video][H.264]Question on trace file Message-ID: <200504160855.j3G8t1YG006301@cuees8.ee.cuhk.edu.hk> Dear experts, In the dumped out trace file by JM94 decoder, -------------------------------------------------------------------------------------------------- @290 ChrAC # c & tr.1s vlc=0 #c=7 #t1=3 000000100 ( 4) @299 ChrAC trailing ones sign (0,5) 010 ( 2) @302 ChrAC lev (0,5) k=3 vlc=0 0000000001 ( 1) @312 ChrAC lev (0,5) k=2 vlc=2 100 ( 4) @315 ChrAC lev (0,5) k=1 vlc=2 00101 ( 5) @320 ChrAC lev (0,5) k=0 vlc=2 00100 ( 4) @325 ChrAC totalrun (0,5) vlc=6 00001 ( 1) @330 ChrAC run (6,5) k=6 vlc=0 1 ( 1) @331 ChrAC run (5,5) k=5 vlc=0 0 ( 0) -------------------------------------------------------------------------------------------------- At @302,the suffixLength is 0 while at @312,does "100" means the suffixLength is 2? If so,according to P161 of the H.264 standard(05/2003),"When suffixLength is equal to 0, suffixLength is set equal to 1",so, here we should have suffixLength of 1 instead of 2? Am I right? Many thanks in advance!! Best regards, XU Ke From Thammi_Reddy Satyam.com Sun Apr 17 20:43:26 2005 From: Thammi_Reddy Satyam.com (Thammi_Reddy) Date: Sun Apr 17 13:39:15 2005 Subject: [Mp4-tech] H.264/YUV construction/ Message-ID: Hi, Could you please answer some very basic concepts? References: (JM model, 3 frames of foreman) 1.foreman_part_qcif.yuv 2.foreman_part_qcif_422.yuv 3.foreman_part_qcif_444.yuv QUESTION1: How is the YUV format constructed, I mean all Y;s then Cb Crs, etc... I have tried entered a single ASCII symbol in notepad (with ATL + <>). When played this with YUV player it took 4 frames for 4:2:0. The same ASCII symbol under DOS is displayed as 2 frames of 4:2:0. I am unable to separate one frame of foreman from 3 frames of YUV file. QUESTION2: How can we convert Webcam output into YUV player so that I can apply H.264 Encoder and Decoder and display back to a format displayable in monitor say windows media player etc? Many thanks in advance. Thammi Reddy DISCLAIMER: This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated. From it.henrik home.se Mon Apr 18 00:38:58 2005 From: it.henrik home.se (Henrik Nilsson) Date: Mon Apr 18 03:59:26 2005 Subject: [Mp4-tech] transform main fraims to simple frames Message-ID: <4262D772.7070207@home.se> Hi, We are a group of student who are building a rescue robot which we are controlling via a live video feed. Currently we are trying to convert the "main" frames from the hardware encoder to "simple" frames so our java mpeg4 player can decode the feed. I tried to search for something like this in the archives but couldnt find it ... does anyone here have any hints on how we could do this? Alternatively maybe someone could point us in the direction of some java mpeg4 player that can decode main frames. /Henrik - team Ratatosk From singer apple.com Mon Apr 18 09:47:58 2005 From: singer apple.com (Dave Singer) Date: Mon Apr 18 04:01:42 2005 Subject: [video] [Mp4-tech]MP4 file format In-Reply-To: <001301c54157$1d3af350$240aa8c0@JazryXu> References: <2589822B3D9BA749A7434A636939D4D15F6A03@pelican.cradle.local> <001301c54157$1d3af350$240aa8c0@JazryXu> Message-ID: At 9:04 AM +0800 4/15/05, JazryXu wrote: >Hi,All: > Who can tell me the Mp4(.mp4) file format detail description or >relative specification, I could not got the IS/IEC 14496-14 standard >specification . > Thanks for your attention The structure is in 14496-12 which is freely available from ISO. > >Best Regards! >Jazry > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, >[video], [systems], [general] or another apppropriate identifier to >indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust >guidelines found at >http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -- David Singer Apple Computer/QuickTime From may_ank77 yahoo.com Sun Apr 17 19:05:34 2005 From: may_ank77 yahoo.com (mayank agarwal) Date: Mon Apr 18 04:02:51 2005 Subject: [Mp4-tech] MPEG4 header Message-ID: <20050418010535.27886.qmail@web52805.mail.yahoo.com> Hi all, I have the following doubts regarding MPEG-4 header 1.What is the standard header bit sequence of MPEG4 visual simple profile. 2.Is header for MPEG-4 video or H.263 is same or different. 3.Is header in encoded bit stream of MPEG-4 same for frame based encoding and packet based encoding. 4.What is the standard bit sequence of header of H263. How to convert the frame based encoding in MPEG4 to packet based encoding according to RTP rfc 3016 format Is there any document or code sequence available which tells how to do that. Many thanks in advance. Regards, Mayank __________________________________ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide From cbilen eee.metu.edu.tr Mon Apr 18 11:34:34 2005 From: cbilen eee.metu.edu.tr (cagdas) Date: Mon Apr 18 04:03:54 2005 Subject: [Mp4-tech] [H.264]Trace file format in JM Software Message-ID: <4263630A.3070707@eee.metu.edu.tr> Dear experts, I am trying to use the trace file in JM ver 9.4, in order to determine the encoded video information (which macroblock is coded in what way, what are the mv's...). But I have troubles in understanding the trace file format. Could you explain how I can interpret the lines such as: @139555mvd_l0 (0) = 0 (org_mv -11 pred_mv -11) 0 ( 0) @139556mvd_l0 (1) = 0 (org_mv 8 pred_mv 8) 0 ( 0) @139557mvd_l0 (0) = -1 (org_mv -12 pred_mv -11) 000 ( -1) @139560mvd_l0 (1) = 1 (org_mv 9 pred_mv 8) 000 ( 1) @139563mvd_l1 (0) = 0 (org_mv -11 pred_mv -11) 0 ( 0) @139564mvd_l1 (1) = 0 (org_mv 8 pred_mv 8) 0 ( 0) Are there any references which describes the format of the trace file? Thanks for your attention. Cagdas Bilen From may_ank77 yahoo.com Mon Apr 18 02:03:47 2005 From: may_ank77 yahoo.com (mayank agarwal) Date: Mon Apr 18 05:53:56 2005 Subject: [Mp4-tech] Frame based to packet based Message-ID: <20050418080347.63378.qmail@web52804.mail.yahoo.com> Hi all, I have integrated the MPEG4 visual simple profile APIs in the application and a simple video loopback on TI DM642 is working fine,in order to send the real time video over internet i need to convert the MPEG4 frame based encoding to packet based encoding RTP rfc 3016 format. I have searched many documents on the net but i couldn't get any method how to do this. If any one kmows about this please reply. Many many thanks for your cooperation. Best Regards, Mayank __________________________________ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide From njain pace.stpp.soft.net Mon Apr 18 15:20:14 2005 From: njain pace.stpp.soft.net (Nitin Jain) Date: Mon Apr 18 05:57:32 2005 Subject: [Mp4-tech] QCELP/3gp2 issue in QuickTime Message-ID: <002c01c543f3$a3507480$ea64a8c0@psil> Hello All, I'm encountering some problems in creating 3g2 streams with QCELP data multiplexed (along with MP4). The 3g2 library recieves a (varying) 'n' frames at a time. All these frames are put in one sample. In this scenario however, the stream has "audio breaks" when it's played in QuickTime. The same things works for the case of AMR, though. Has anyone faced any similar problem as well (with multiple frames per sample for QCELP)? Since this is the first time I'm posting on this forum, so I dont know if attachments are allowed. If needed, I can send the the input QCELP audio file (with header removed) and the generated 3g2 on individual mail-ids. I would be really grateful, if you could give me some pointers on this. Thanks aprior, Nitin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050418/6231d749/attachment.html From tuukkat ee.oulu.fi Mon Apr 18 12:55:18 2005 From: tuukkat ee.oulu.fi (Tuukka Toivonen) Date: Mon Apr 18 05:58:25 2005 Subject: [Mp4-tech] how to convert cif to qcif In-Reply-To: <000001c541e3$ffc9e410$82efed80@csdlaptop> References: <000001c541e3$ffc9e410$82efed80@csdlaptop> Message-ID: On Fri, 15 Apr 2005, Amy, Mei-Hsuan Lu wrote: > Does any one know any good algorithm/utility to convert CIF format to > QCIF format (yuv file)? Mencoder can do it on command line, something like: mencoder -rawvideo on:w=352:h=288:fourcc=i420 -vf scale=176:144,format=i420 -ovc raw -of rawvideo input.cif -o output.qcif I haven't tested this, so you need read the documentation and add any parameters I forgot: http://www.mplayerhq.hu From alvarez ac.upc.edu Mon Apr 18 13:53:44 2005 From: alvarez ac.upc.edu (Mauricio Alvarez) Date: Mon Apr 18 08:21:34 2005 Subject: [Mp4-tech] how to convert cif to qcif In-Reply-To: <000001c541e3$ffc9e410$82efed80@csdlaptop> References: <000001c541e3$ffc9e410$82efed80@csdlaptop> Message-ID: <426391B8.8020209@ac.upc.edu> Hi You can use ffmpeg [1]: ffmpeg -s cif -i input_file.yuv -s qcif output_file.yuv Note 1: Istead of cif or qcif you can put the resolution using the numbers: 352x288, 176x144 or any other resolution that you need. Note 2: ffmpeg asumes that the YUVs are in 4:2:0 chroma subsampling scheme ---- Mauricio [1] http://ffmpeg.sourceforge.net/ Amy, Mei-Hsuan Lu wrote: > Hello folks, > > > > Does any one know any good algorithm/utility to convert CIF format to > QCIF format (yuv file)? > > Thanks > > > > Meihsuan Lu From SassanP vbrick.com Mon Apr 18 13:23:29 2005 From: SassanP vbrick.com (Sassan Pejhan) Date: Mon Apr 18 15:22:49 2005 Subject: [Mp4-tech] [h264] coding parameters for HD Message-ID: Hi, In the encoder config file there is a section under Rate Control, where you can enable Rate Control and set the Bitrate to the desired value. Regards, Sassan -----Original Message----- From: Srinivas Ramkumar Yadavalli [mailto:ysramkumar@yahoo.com] Sent: Friday, April 15, 2024 11:34 AM To: Mauricio Alvarez; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] [h264] coding parameters for HD Is there a WAY we can control the BIT Rate of the encoded output using JVT reference software? Is encoded bit rate always depend upon the content of each frame? Ramkumar --- Mauricio Alvarez wrote: > Hi. > > I am making some experiments on high definition > video decoding using > the JM-9.3 H.264 reference decoder. For that I am > coding some test HD > sequences (1280x720) using the reference encoder. > My target application > is HD video for playback reproduction like HD-DVD > (or Blu-ray) and > broadcast (satellite HDTV). > > I am using the FRExt High profile with level 4.0. > and I am defining the > best encoding paramters for HD. In especial I want > to know what can be a > good frame period in terms of I, P and B frames. > > In the bin directory of the JM software there is a > file called > encoder_highquality_HD.cfg that suggest the use of: > IntraPeriod = 4 > NumberBFrames = 2 > FrameSkip = 2 > > That will generate a sequence like: > I-P-B-B-P-B-B-P-B-B-I-P-B-B-P-B-B-P-B-B... > > Is this configuration adecuated for the mentioned HD > applications? > > Thanks for your attention > > Mauricio Alvarez > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > Regards, Ramkumar (Srinivas Ramkumar Yadavalli) __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From SassanP vbrick.com Mon Apr 18 13:38:58 2005 From: SassanP vbrick.com (Sassan Pejhan) Date: Mon Apr 18 15:22:54 2005 Subject: [Mp4-tech] MPEG4 header Message-ID: Hi Mayank, The headers for MPEG-4 Part2 and H.263 are defined in their respective specs (ISO/IEC 14496-Part 2 and ITU-T Recommendation H.263, respectively). The header sequences are not identical although MPEG-4 Part2 is backwards compatible with H.263 baseline (i.e. the 1996 version of H.263 which did not include additions in the later H.263+ and H.263++ versions) - and is referred to as VOP Plane with Short Headers in the MPEG-4 specs. For code on packing MPEG-4 bitstreams into RTP packets per RFC 3016, take a look at the MPEGIP web page (www.mpeg4ip.net). You may also want to look at the ISMA 1.0 specifications (avaliable from www.isma.tv) for more elaborate documentation. Regards, Sassan -----Original Message----- From: mayank agarwal [mailto:may_ank77@yahoo.com] Sent: Sunday, April 17, 2024 9:06 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] MPEG4 header Hi all, I have the following doubts regarding MPEG-4 header 1.What is the standard header bit sequence of MPEG4 visual simple profile. 2.Is header for MPEG-4 video or H.263 is same or different. 3.Is header in encoded bit stream of MPEG-4 same for frame based encoding and packet based encoding. 4.What is the standard bit sequence of header of H263. How to convert the frame based encoding in MPEG4 to packet based encoding according to RTP rfc 3016 format Is there any document or code sequence available which tells how to do that. Many thanks in advance. Regards, Mayank __________________________________ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From prashant.desai vsnl.co.in Tue Apr 19 01:09:40 2005 From: prashant.desai vsnl.co.in (Prashant Desai) Date: Mon Apr 18 15:23:04 2005 Subject: [Mp4-tech] MPEG-4 AVC Licensing Announcements ? Message-ID: Hello All Are there any new announcements on the MPEG-4 AVC licensing policy ? Or still it's the same one eg 2.5 USD per encoder/decoder etc , along with the licensing based on the duration of the content / no of views etc ? btw , whats the MPEG-4 system license ? is it the same as MPEG- 4 visual ? on MPEGLA site there is not clarity on this can any one point me to the links from where can get some info on the same ? how abt TS licensing ? its same as that of MPEG-2 TS i.e MPEG-2 Part I ? kindly clarify & how about the licensing of the Packaging of MPEG-4 & MPEG-2 contents ? I mean the file format licensing regards, Prashant -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/5c774645/attachment.html From may_ank77 yahoo.com Mon Apr 18 21:39:24 2005 From: may_ank77 yahoo.com (mayank agarwal) Date: Tue Apr 19 05:52:28 2005 Subject: [Mp4-tech] MPEG4 header In-Reply-To: 6667 Message-ID: <20050419033924.56070.qmail@web52801.mail.yahoo.com> Many thanks for your reply. I don't have aceess to MPEG-4 standard,please tell me from where can i get that, if i can download from any site free or if anyone has one please sent me by mail. In encoded stream for MPEG-4 visual simple profile i am getting first four values(decimal) 0 0 1 182,i think that is the header because for succesive frames it remains constant. I just want to know whether it is right or wrong,how can i interpret that header. Thanks, Regards, Mayank --- Sassan Pejhan wrote: > Hi Mayank, > > The headers for MPEG-4 Part2 and H.263 are defined > in their respective specs (ISO/IEC 14496-Part 2 and > ITU-T > Recommendation H.263, respectively). > > The header sequences are not identical although > MPEG-4 Part2 > is backwards compatible with H.263 baseline (i.e. > the 1996 > version of H.263 which did not include additions in > the > later H.263+ and H.263++ versions) - and is referred > to > as VOP Plane with Short Headers in the MPEG-4 specs. > > For code on packing MPEG-4 bitstreams into RTP > packets > per RFC 3016, take a look at the MPEGIP web page > (www.mpeg4ip.net). You may also want to look at the > ISMA 1.0 specifications (avaliable from www.isma.tv) > for more elaborate documentation. > > Regards, > Sassan > > -----Original Message----- > From: mayank agarwal [mailto:may_ank77@yahoo.com] > Sent: Sunday, April 17, 2024 9:06 PM > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] MPEG4 header > > > > Hi all, > I have the following doubts regarding MPEG-4 header > 1.What is the standard header bit sequence of MPEG4 > visual simple profile. > 2.Is header for MPEG-4 video or H.263 is same or > different. > 3.Is header in encoded bit stream of MPEG-4 same for > frame based encoding and packet based encoding. > 4.What is the standard bit sequence of header of > H263. > > How to convert the frame based encoding in MPEG4 to > packet based encoding according to RTP rfc 3016 > format > Is there any document or code sequence available > which > tells how to do that. > > Many thanks in advance. > Regards, > Mayank > > > > __________________________________ > Do you Yahoo!? > Plan great trips with Yahoo! Travel: Now over 17,000 > guides! > http://travel.yahoo.com/p-travelguide > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. > Include [audio, [video], [systems], [general] or > another apppropriate identifier to indicate the type > of question you have. > > Note: Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > __________________________________ Do you Yahoo!? Make Yahoo! your home page http://www.yahoo.com/r/hs From kexu ee.cuhk.edu.hk Tue Apr 19 15:54:04 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Tue Apr 19 05:55:46 2005 Subject: [Mp4-tech][H.264]about JM software Message-ID: <200504190653.j3J6rtYG017642@cuees8.ee.cuhk.edu.hk> Dear experts, Currently I am using the JM94 software and I know its trace file can give me a detail information about how the bitstream is coded.However,if I want to know the detailed information about each block,e.g,I want to find out the residual coefficients value for each 4x4 blk or the inter-predicted value of each block, how can I deal with the JM software? Many thanks in advance!! Best regards, XU Ke From smithajo gmail.com Tue Apr 19 16:21:30 2005 From: smithajo gmail.com (Smitha Joseph) Date: Tue Apr 19 15:13:58 2005 Subject: [Mp4-tech] [Video][H.264] Regarding picture_order_cnt_type Message-ID: <7bca48b4050419025174994814@mail.gmail.com> Hi, I read in the H.264 standard, for different values of the parameter pic_order_cnt_type different processes are used to find the TopFieldOrderCount and BottomField order count. Could you please give me information regarding what each value of the parameter pic_order_cnt_type specifies? Thanks Much, Smitha Joseph From rohan teneoris.com Tue Apr 19 17:29:29 2005 From: rohan teneoris.com (Rohan Kangralkar) Date: Tue Apr 19 15:15:53 2005 Subject: [Mp4-tech] MPEG4/AVC Encoder Message-ID: <1113908368.461.1.camel@rohan.teneoris.com> Hello, I'm new to H.264 Encoding eventhough I've a reasonably good knowledge about H.264 standard & decoder. I'd appreciate if some one provides me pointers to resources (publicly available on the web) which provide brief/detailed description about the algorithms employed by different components of H.264 encoder (Eg. Intra prediction, Motion Estimation, Rate control etc..). Thanks in advance, -- Rohan Kangralkar Teneoris Networks PVT LTD From grwang ict.ac.cn Tue Apr 19 21:16:43 2005 From: grwang ict.ac.cn (=?gb2312?B?zfXI2bjV?=) Date: Tue Apr 19 15:17:22 2005 Subject: [Mp4-tech] about RDOptimization of H.264/AVC Message-ID: <000c01c544d9$a61fc8a0$a82ae29f@ictgrwang> hello,experts: who can tell me the idea of RDOptimization with losses which is in the coding configure file of H.264/AVC as follows: RDOptimization = 2 # rd-optimized mode decision (0:off, 1:on, 2: with losses) or give me some hints of the related documents. thanks a lot! best, Ronggang -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/236f62d5/attachment.html From gops98 yahoo.com Tue Apr 19 07:55:49 2005 From: gops98 yahoo.com (Gopalakrishnan Srinivasan) Date: Tue Apr 19 15:18:22 2005 Subject: [Mp4-tech] MOV to MPEG4 utility In-Reply-To: <20050419033924.56070.qmail@web52801.mail.yahoo.com> Message-ID: <20050419135549.12032.qmail@web54202.mail.yahoo.com> Hi all, May I know where can I get free utility to convert video from Quicktime MOV format to MP4 format. Thanks & Regards, SGK --------------------------------- Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/fe613450/attachment.html From dsn2603 rediffmail.com Tue Apr 19 15:46:32 2005 From: dsn2603 rediffmail.com (sakthi narayanan) Date: Tue Apr 19 15:19:08 2005 Subject: [Mp4-tech] how to convert cif to qcif Message-ID: <20050419144657.5978.qmail@webmail52.rediffmail.com> ? hi, u can itself write the code for converting cif to qcif format. i.e cif format file contains 352 *288 samples. u can convert the CIF to QCIf by applying downsampling or avg. sampling method. with regards, sakthi On Mon, 18 Apr 2024 Tuukka Toivonen wrote : >On Fri, 15 Apr 2005, Amy, Mei-Hsuan Lu wrote: > >>Does any one know any good algorithm/utility to convert CIF format to >>QCIF format (yuv file)? > >Mencoder can do it on command line, something like: > >mencoder -rawvideo on:w=352:h=288:fourcc=i420 -vf scale=176:144,format=i420 -ovc raw -of rawvideo input.cif -o output.qcif > >I haven't tested this, so you need read the documentation and add >any parameters I forgot: >http://www.mplayerhq.hu >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/fd891b42/attachment.html From mark_wezelenburg zonnet.nl Tue Apr 19 20:20:01 2005 From: mark_wezelenburg zonnet.nl (mark_wezelenburg@zonnet.nl) Date: Tue Apr 19 15:20:31 2005 Subject: [Mp4-tech] mbaff Message-ID: <1113931201.42653dc1c22cd@webmail.versatel.nl> Hi, With reference to ITU H.264 05/2003 Section 6.2 claims the purpose of mbaff for local frame/field encoding, however 7.4.3 states that the "field_pic_flag" must be the same for all slice headers in a coded picture. since mbaff depends on this parameter, it appears that mbaff is either active or inactive for an entire picture. I assume the text in 7.4.3 is wrong, is that so ? Or is there another mechanism that I overlooked Thanks, Mark -- _____________________________________________________________________ Versatel ADSL Gratis. De voordelen van gratis internet met de snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en met gratis modem. Bestel snel op www.versatel.nl. From mw com.dtu.dk Tue Apr 19 23:38:51 2005 From: mw com.dtu.dk (Mo Wu) Date: Tue Apr 19 17:09:22 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Message-ID: Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/bb266e9e/attachment.html From golikeri gmail.com Tue Apr 19 15:16:56 2005 From: golikeri gmail.com (Adarsh Golikeri) Date: Wed Apr 20 03:15:31 2005 Subject: [Mp4-tech] MPEG4/AVC Encoder In-Reply-To: <1113908368.461.1.camel@rohan.teneoris.com> References: <1113908368.461.1.camel@rohan.teneoris.com> Message-ID: This is a good start : Thanks, Adarsh On 4/19/05, Rohan Kangralkar wrote: > Hello, > > I'm new to H.264 Encoding eventhough I've a reasonably good knowledge > about H.264 standard & decoder. I'd appreciate if some one provides me > pointers to resources (publicly available on the web) which provide > brief/detailed description about the algorithms employed by different > components of H.264 encoder (Eg. Intra prediction, Motion Estimation, > Rate control etc..). > > Thanks in advance, > -- > Rohan Kangralkar > Teneoris Networks PVT LTD > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > From alexismt comcast.net Tue Apr 19 22:31:44 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Wed Apr 20 03:19:16 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Message-ID: <041920052131.6730.426578C00005B46100001A4A22007354469B039C07980A040E@comcast.net> Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050419/6be3e3a5/attachment-0001.html From singer apple.com Wed Apr 20 10:21:10 2005 From: singer apple.com (Dave Singer) Date: Wed Apr 20 03:20:08 2005 Subject: [Mp4-tech] MOV to MPEG4 utility In-Reply-To: <20050419135549.12032.qmail@web54202.mail.yahoo.com> References: <20050419135549.12032.qmail@web54202.mail.yahoo.com> Message-ID: At 6:55 AM -0700 4/19/05, Gopalakrishnan Srinivasan wrote: >Hi all, > > May I know where can I get free utility to convert >video from Quicktime MOV format to MP4 format. quicktime itself? though it's not free (you'll need qt pro) > >Thanks & Regards, > >SGK > > > >Do you Yahoo!? >Plan great trips with >Yahoo! >Travel: Now >over >17,000 guides! > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, >[video], [systems], [general] or another apppropriate identifier to >indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust >guidelines found at >http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -- David Singer Apple Computer/QuickTime -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/b0854091/attachment.html From garysull windows.microsoft.com Tue Apr 19 18:22:13 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 20 03:20:50 2005 Subject: [Mp4-tech] mbaff Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E280478@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Re: "it appears that mbaff is either active or inactive for an entire picture" That statement is true. There is nothing wrong with the statement in subclause 7.4.3. The adaptivity of MBAFF is at the macroblock-pair level, not the slice level. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> mark_wezelenburg@zonnet.nl +> Sent: Tuesday, April 19, 2024 10:20 AM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] mbaff +> +> Hi, +> +> With reference to ITU H.264 05/2003 +> +> Section 6.2 claims the purpose of mbaff for local +> frame/field encoding, +> however 7.4.3 states that the "field_pic_flag" must be the +> same for all +> slice headers in a coded picture. since mbaff depends on +> this parameter, +> it appears that mbaff is either active or inactive for an +> entire picture. +> +> I assume the text in 7.4.3 is wrong, is that so ? Or is +> there another mechanism +> that I overlooked +> +> Thanks, +> +> Mark +> +> +> +> +> -- +> _____________________________________________________________________ +> Versatel ADSL Gratis. De voordelen van gratis internet met de +> snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. +> Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en +> met gratis modem. Bestel snel op www.versatel.nl. +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From tma iis.fhg.de Wed Apr 20 03:29:24 2005 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Apr 20 03:21:48 2005 Subject: [Mp4-tech] MPEG4 header In-Reply-To: <20050419033924.56070.qmail@web52801.mail.yahoo.com> References: <20050419033924.56070.qmail@web52801.mail.yahoo.com> Message-ID: <4265A264.8020403@iis.fhg.de> mayank agarwal wrote: > Many thanks for your reply. > > I don't have aceess to MPEG-4 standard,please tell me > from where can i get that, if i can download from any > site free or if anyone has one please sent me by mail. If you are MPEG member the latest edition of MPEG-4 visual is w5546. If you are not MPEG member you have to buy the standard from ISO (ISO/IEC 14496-2:2004). > In encoded stream for MPEG-4 visual simple profile > i am getting first four values(decimal) 0 0 1 182,i > think that is the header because for succesive frames > it remains constant. 0x00 0x00 0x01 0xb6 is the so called VOP header start code. Every VOP (frame) starts with this code. Kind regards, Herbert. > I just want to know whether it is right or wrong,how > can i interpret that header. > Thanks, > > Regards, > Mayank > > > > --- Sassan Pejhan wrote: > >>Hi Mayank, >> >>The headers for MPEG-4 Part2 and H.263 are defined >>in their respective specs (ISO/IEC 14496-Part 2 and >>ITU-T >>Recommendation H.263, respectively). >> >>The header sequences are not identical although >>MPEG-4 Part2 >>is backwards compatible with H.263 baseline (i.e. >>the 1996 >>version of H.263 which did not include additions in >>the >>later H.263+ and H.263++ versions) - and is referred >>to >>as VOP Plane with Short Headers in the MPEG-4 specs. >> >>For code on packing MPEG-4 bitstreams into RTP >>packets >>per RFC 3016, take a look at the MPEGIP web page >>(www.mpeg4ip.net). You may also want to look at the >>ISMA 1.0 specifications (avaliable from www.isma.tv) >>for more elaborate documentation. >> >>Regards, >>Sassan >> >>-----Original Message----- >>From: mayank agarwal [mailto:may_ank77@yahoo.com] >>Sent: Sunday, April 17, 2024 9:06 PM >>To: mp4-tech@lists.mpegif.org >>Subject: [Mp4-tech] MPEG4 header >> >> >> >>Hi all, >> I have the following doubts regarding MPEG-4 header >>1.What is the standard header bit sequence of MPEG4 >>visual simple profile. >>2.Is header for MPEG-4 video or H.263 is same or >>different. >>3.Is header in encoded bit stream of MPEG-4 same for >>frame based encoding and packet based encoding. >>4.What is the standard bit sequence of header of >>H263. >> >>How to convert the frame based encoding in MPEG4 to >>packet based encoding according to RTP rfc 3016 >>format >>Is there any document or code sequence available >>which >>tells how to do that. >> >> Many thanks in advance. >> Regards, >> Mayank >> >> >> >>__________________________________ >>Do you Yahoo!? >>Plan great trips with Yahoo! Travel: Now over 17,000 >>guides! >>http://travel.yahoo.com/p-travelguide >>_______________________________________________ >>NOTE: Please use clear subject lines for your posts. >>Include [audio, [video], [systems], [general] or >>another apppropriate identifier to indicate the type >>of question you have. >> >>Note: Conduct on the mailing list is subject to the >>Antitrust guidelines found at >> > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >>_______________________________________________ >>NOTE: Please use clear subject lines for your posts. >>Include [audio, [video], [systems], [general] or >>another apppropriate identifier to indicate the type >>of question you have. >> >>Note: Conduct on the mailing list is subject to the >>Antitrust guidelines found at >> > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > > > __________________________________ > Do you Yahoo!? > Make Yahoo! your home page > http://www.yahoo.com/r/hs > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > -- Herbert Thoma Group Manager Video Multimedia Realtime Systems Department Fraunhofer IIS Am Wolfsmantel 33, 91058 Erlangen, Germany Phone: +49-9131-776-323 Fax: +49-9131-776-399 email: tma@iis.fhg.de www: http://www.iis.fhg.de/ From mark_wezelenburg zonnet.nl Wed Apr 20 10:17:19 2005 From: mark_wezelenburg zonnet.nl (mark_wezelenburg@zonnet.nl) Date: Wed Apr 20 05:11:03 2005 Subject: [Mp4-tech] mbaff In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE2460E280478@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> References: <91D7F2CEE3425A4A9D11311D09FCE2460E280478@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: <1113981439.426601ffd1ee5@webmail.versatel.nl> Hi, Check, It's the "mb_field_decoding_flag" that I missed (slice data) Mark Citeren Gary Sullivan : > > Re: "it appears that mbaff is either active or inactive for an entire > picture" > > That statement is true. > > There is nothing wrong with the statement in subclause 7.4.3. The > adaptivity of MBAFF is at the macroblock-pair level, not the slice > level. > > Best Regards, > > Gary Sullivan > > > +> -----Original Message----- > +> From: mp4-tech-bounces@lists.mpegif.org > +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of > +> mark_wezelenburg@zonnet.nl > +> Sent: Tuesday, April 19, 2024 10:20 AM > +> To: mp4-tech@lists.mpegif.org > +> Subject: [Mp4-tech] mbaff > +> > +> Hi, > +> > +> With reference to ITU H.264 05/2003 > +> > +> Section 6.2 claims the purpose of mbaff for local > +> frame/field encoding, > +> however 7.4.3 states that the "field_pic_flag" must be the > +> same for all > +> slice headers in a coded picture. since mbaff depends on > +> this parameter, > +> it appears that mbaff is either active or inactive for an > +> entire picture. > +> > +> I assume the text in 7.4.3 is wrong, is that so ? Or is > +> there another mechanism > +> that I overlooked > +> > +> Thanks, > +> > +> Mark > +> > +> > +> > +> > +> -- > +> _____________________________________________________________________ > +> Versatel ADSL Gratis. De voordelen van gratis internet met de > +> snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. > +> Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en > +> met gratis modem. Bestel snel op www.versatel.nl. > +> > +> _______________________________________________ > +> NOTE: Please use clear subject lines for your posts. Include > +> [audio, [video], [systems], [general] or another > +> apppropriate identifier to indicate the type of question you have. > +> > +> Note: Conduct on the mailing list is subject to the > +> Antitrust guidelines found at > +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant > +> itrust.php > +> > -- _____________________________________________________________________ Versatel ADSL Gratis. De voordelen van gratis internet met de snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en met gratis modem. Bestel snel op www.versatel.nl. From mw com.dtu.dk Wed Apr 20 10:35:11 2005 From: mw com.dtu.dk (Mo Wu) Date: Wed Apr 20 05:13:14 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Message-ID: Dear Alexis, I have look into the manul you suggest for 9.3. It makes things more clear. But about error resilence, it does describe it in detail. We need to do some test for H.264's error resilence tools by adding different type of errors to the encoded stream. ex. if I use Redundant Slice by setting UseRedundantSlice to 1, it can encode the sequence, but cannot even decode without adding error on the codes. So is there any confliction with other settings? I also have the same problems when using slice mode and setting slice group. besides, the most important thing is when we add errors, the decoding can continue until the end of the codes, but it crash most of the time when I use 'callback' (can be decoded). The error resilence testing can work well with H.263 codec. So I dont know what is the problem here Thanks for your help and replying my question! -- Mo -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Alexis Michael Tourapis Sent: 19. april 2005 23:32 To: Mo Wu; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/98e057f3/attachment.html From Chiranjeevi.Melam lntinfotech.com Wed Apr 20 14:46:02 2005 From: Chiranjeevi.Melam lntinfotech.com (Chiranjeevi.Melam@lntinfotech.com) Date: Wed Apr 20 05:14:07 2005 Subject: Fw: [Mp4-tech] help : H.264 Message-ID: Hi Group Can some one help me from where i can get the H.264 standard documents with out any fee. Thanks in Advance. Chiranjeevi ______________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/e107cce1/attachment-0001.html From garysull windows.microsoft.com Wed Apr 20 02:37:37 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 20 05:15:41 2005 Subject: [Mp4-tech] mbaff Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E28072F@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Yes, but MbaffFrameFlag (a flag derived from the field_pic_flag in the slice header) is either 0 or 1 for the entire picture. So it is true that "MBAFF is either active or inactive for the entire picture". Like I said, the adaptivity is at the macroblock-pair level. That is where mb_field_decoding_flag resides. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mark_wezelenburg@zonnet.nl [mailto:mark_wezelenburg@zonnet.nl] +> Sent: Wednesday, April 20, 2024 12:17 AM +> To: Gary Sullivan +> Cc: mp4-tech@lists.mpegif.org +> Subject: RE: [Mp4-tech] mbaff +> +> Hi, +> +> Check, It's the "mb_field_decoding_flag" that I missed (slice data) +> +> Mark +> +> +> +> Citeren Gary Sullivan : +> +> > +> > Re: "it appears that mbaff is either active or inactive +> for an entire +> > picture" +> > +> > That statement is true. +> > +> > There is nothing wrong with the statement in subclause 7.4.3. The +> > adaptivity of MBAFF is at the macroblock-pair level, not the slice +> > level. +> > +> > Best Regards, +> > +> > Gary Sullivan +> > +> > +> > +> -----Original Message----- +> > +> From: mp4-tech-bounces@lists.mpegif.org +> > +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> > +> mark_wezelenburg@zonnet.nl +> > +> Sent: Tuesday, April 19, 2024 10:20 AM +> > +> To: mp4-tech@lists.mpegif.org +> > +> Subject: [Mp4-tech] mbaff +> > +> +> > +> Hi, +> > +> +> > +> With reference to ITU H.264 05/2003 +> > +> +> > +> Section 6.2 claims the purpose of mbaff for local +> > +> frame/field encoding, +> > +> however 7.4.3 states that the "field_pic_flag" must be the +> > +> same for all +> > +> slice headers in a coded picture. since mbaff depends on +> > +> this parameter, +> > +> it appears that mbaff is either active or inactive for an +> > +> entire picture. +> > +> +> > +> I assume the text in 7.4.3 is wrong, is that so ? Or is +> > +> there another mechanism +> > +> that I overlooked +> > +> +> > +> Thanks, +> > +> +> > +> Mark +> > +> +> > +> +> > +> +> > +> +> > +> -- +> > +> +> _____________________________________________________________________ +> > +> Versatel ADSL Gratis. De voordelen van gratis internet met de +> > +> snelheid van ADSL. Zonder abonnementskosten en zonder +> vast contract. +> > +> Je betaalt alleen voor de tijd online. Nu zonder +> aansluitkosten en +> > +> met gratis modem. Bestel snel op www.versatel.nl. +> > +> +> > +> _______________________________________________ +> > +> NOTE: Please use clear subject lines for your posts. Include +> > +> [audio, [video], [systems], [general] or another +> > +> apppropriate identifier to indicate the type of +> question you have. +> > +> +> > +> Note: Conduct on the mailing list is subject to the +> > +> Antitrust guidelines found at +> > +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> > +> itrust.php +> > +> +> > +> +> +> +> +> -- +> _____________________________________________________________________ +> Versatel ADSL Gratis. De voordelen van gratis internet met de +> snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. +> Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en +> met gratis modem. Bestel snel op www.versatel.nl. +> +> From alexismt comcast.net Wed Apr 20 02:53:22 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Wed Apr 20 08:30:41 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) In-Reply-To: Message-ID: <200504200853.j3K8rXFt018956@lists1.magma.ca> Dear Mo First, I would strongly suggest if possible shifting to 9.5. Its performance is much better but also there were several bugs that were fixed. About the option you mentioned it appears that actually it only changes a header and it does not do anything else (at least from a first look). All other parameters in the Error resilience section have also not been touched much for quite a while and could either be broken (mainly due to FREXT integration) while they might also not be compatible with them (especially the pyramid stuff, rd decisions at the picture level, etc). Note however that main part of the blame is in the decoder since the decoder does not properly handles certain errors if encountered. This is especially true when an error happens on the actual bitstream data which may affect your entropy decoding and contexts derivation (even more problematic when you enable CABAC). As you can understand the decoder needs to recognize such situations and perform the appropriate steps. I am not aware if there is any plan to enhance this functionality. You may actually consider some other concepts which I believe such help by mainly making certain intra type considerations such as RandomIntraMBRefresh, MbLineIntraUpdate, and UseConstrainedIntraPred. Again these however would still have a problem in the above situation.. Best regards Alexis _____ From: Mo Wu [mailto:mw@com.dtu.dk] Sent: Wednesday, April 20, 2024 12:35 AM To: Alexis Michael Tourapis; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Dear Alexis, I have look into the manul you suggest for 9.3. It makes things more clear. But about error resilence, it does describe it in detail. We need to do some test for H.264's error resilence tools by adding different type of errors to the encoded stream. ex. if I use Redundant Slice by setting UseRedundantSlice to 1, it can encode the sequence, but cannot even decode without adding error on the codes. So is there any confliction with other settings? I also have the same problems when using slice mode and setting slice group. besides, the most important thing is when we add errors, the decoding can continue until the end of the codes, but it crash most of the time when I use 'callback' (can be decoded). The error resilence testing can work well with H.263 codec. So I dont know what is the problem here Thanks for your help and replying my question! -- Mo -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Alexis Michael Tourapis Sent: 19. april 2005 23:32 To: Mo Wu; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/bd907b1a/attachment.html From changhsu25 gmail.com Wed Apr 20 17:55:04 2005 From: changhsu25 gmail.com (C. L.) Date: Wed Apr 20 08:31:14 2005 Subject: [Mp4-tech] "ftp3.itu.int" is no longer available?? Message-ID: http://ftp3.itu.int/av-arch/jvt-site/ is not available any more. How to become a member of the site? Is there any other site to find the documents? I am looking for doc G012. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/78037902/attachment.html From Martin.Davies radioscape.com Wed Apr 20 11:34:10 2005 From: Martin.Davies radioscape.com (Davies, Martin) Date: Wed Apr 20 08:31:21 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Message-ID: <5D0E1B25260FEB4CA3095AE1E97EA78F0785F0@morse> The first site appears to be password protected. The second one does not seem to exist! Is there any other way of getting these docs? Martin -----Original Message----- From: alexismt@comcast.net [mailto:alexismt@comcast.net] Sent: 19 April 2024 22:32 To: Mo Wu; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk ) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify postmaster@radioscape.com. This footnote also confirms that this email message has been scanned for the presence of computer viruses known at the time of sending. www.radioscape.com ********************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/c279960c/attachment-0001.html From mp3.aac.mp4 gmail.com Wed Apr 20 16:24:38 2005 From: mp3.aac.mp4 gmail.com (tech list) Date: Wed Apr 20 08:31:28 2005 Subject: [Mp4-tech] How to packet the mpeg4 buffer? In-Reply-To: References: Message-ID: <409a09b905042002544afa35ca@mail.gmail.com> Hi Xiaowang, Seems like you are dealing with a "progressive download" kind of streaming. You may need to prepare the file to have the moov atom at the beginning of the file so that your decoder and parser can be initialized. On 4/11/05, Yang Xiaowang-a20590 wrote: > > Hi,all, > Since my player only support to play a whole mp4 file , but I want to > play the buffer(like streaming) when I read it from a file , I need to > packet the buffer to make my player to think it as a full mp4 file. > Thanks, > Sureone > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/1411cbd4/attachment.html From mp3.aac.mp4 gmail.com Wed Apr 20 16:26:58 2005 From: mp3.aac.mp4 gmail.com (tech list) Date: Wed Apr 20 08:31:35 2005 Subject: [Mp4-tech] MOV to MPEG4 utility In-Reply-To: References: <20050419135549.12032.qmail@web54202.mail.yahoo.com> Message-ID: <409a09b905042002566ddc3c7a@mail.gmail.com> I think you could use Helix mobile producer by real. It has a 30 day free eval version. On 4/20/05, Dave Singer wrote: > > At 6:55 AM -0700 4/19/05, Gopalakrishnan Srinivasan wrote: > > Hi all, > > May I know where can I get free utility to convert video from Quicktime > MOV format to MP4 format. > > > quicktime itself? though it's not free (you'll need qt pro) > > > Thanks & Regards, > > SGK > > ------------------------------ > > Do you Yahoo!? > Plan great trips with Yahoo! Travel: > Now over 17,000 guides! > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > > -- > > David Singer > Apple Computer/QuickTime > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/d908e264/attachment.html From s2318008 ntut.edu.tw Wed Apr 20 20:54:38 2005 From: s2318008 ntut.edu.tw (=?big5?B?rNPZeShIdWFuZy1CaW4p?=) Date: Wed Apr 20 08:31:43 2005 Subject: [Mp4-tech] About the definition of num_ref_frames Message-ID: <008a01c5459f$bf5480b0$042a7c8c@chan> Hi all, I am confused about that the parameter in JM is different with the definition of H.264 recommendation. In recommendation document JVT-G050(It seems to be a old version), I check some definitions in 7.4 as below: [============= num_ref_frames specifies the maximum total number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to 16, inclusive. max_long_term_frame_idx_plus1 minus 1 specifies the maximum value of long-term frame index allowed for long-term reference pictures (until receipt of another value of max_long_term_frame_idx_plus1). The value of max_long_term_frame_idx_plus1 shall be in the range of 0 to num_ref_frames, inclusive. =============] Here the text "The value of num_ref_frames shall be in the range of 0 to 16, inclusive" is obey the parameter in JM. However, I download the latest recommendation document from ITU web-site the definitions change as below: [============= num_ref_frames specifies the maximum number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields that may be used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to MaxDpbSize (as specified in subclause A.3.1), inclusive. =============] It defines the maximum value of num_ref_frame is 0 to MaxDpbSize instead of 0 to 16. For example , if we use the profile with the level value equal to 5, and the picure format is CIF, we might have a huge amount DPB size to store many reference frames in CIF format. At this situation, We can store more than '16' reference frames(including short-term and long-term) in the DPB. So, the questions are: Qn 1> Why does JM restrict the parameter 'NumberReferenceFrames' in the range 1-16 ? ("NumberReferenceFrames = 5 # Number of previous frames used for inter motion search (1-16)") Can we set the parameter "NumberReferenceFrames" more than '16' for reference if the DPB size is enough ?(In JM) Qn 2> Can the long-term reference picture stay in the DPB as long as the encoder wants it to ? (Will the parameter'NumberReferenceFrames' restrict the logh-term reference index ?) Qn 3> Could anyone tell me that the meaning of the parameter in JM 'PList0Reference' ? Best regards, H.B. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/8749c973/attachment.html From mark_wezelenburg zonnet.nl Wed Apr 20 17:55:33 2005 From: mark_wezelenburg zonnet.nl (mark_wezelenburg@zonnet.nl) Date: Wed Apr 20 12:15:05 2005 Subject: [Mp4-tech] is forward and backward bit-stream decoding possible ? In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE2460E280478@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> References: <91D7F2CEE3425A4A9D11311D09FCE2460E280478@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: <1114008933.42666d65d90f0@webmail.versatel.nl> Hi, With regard, to H.264 05/2003 If I'm correct, one ought to be able to decode slice data both in forward and backward direction from a slice header (to be found by synching on a slice partition (7.3.2.8)), due to the properties of the VLcode. However, some MB data is differentially encoded (e.g. quantiser data "mb_qp_delta"), which would make backward decoding impossible. Is there a constraint on such data on slice level (thus the slice_qp_delta), to make this possible nevertheless ? Regards, Mark -- _____________________________________________________________________ Versatel ADSL Gratis. De voordelen van gratis internet met de snelheid van ADSL. Zonder abonnementskosten en zonder vast contract. Je betaalt alleen voor de tijd online. Nu zonder aansluitkosten en met gratis modem. Bestel snel op www.versatel.nl. From alexismt comcast.net Wed Apr 20 09:24:42 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Wed Apr 20 12:17:30 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) In-Reply-To: <5D0E1B25260FEB4CA3095AE1E97EA78F0785F0@morse> Message-ID: <200504201524.j3KFOtGo028032@lists1.magma.ca> Dear Martin, For the second one just go directly to the ftp site (ftp://standards.polycom.com/2005_01_HongKong/). For the first, the site is probably locked because of the current meeting. I don't think it is the best of ideas to pass the login/password through the reflector. I can also send the latest document to you directly. Best regards, Alexis _____ From: Davies, Martin [mailto:Martin.Davies@radioscape.com] Sent: Wednesday, April 20, 2024 2:34 AM To: 'alexismt@comcast.net'; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) The first site appears to be password protected. The second one does not seem to exist! Is there any other way of getting these docs? Martin -----Original Message----- From: alexismt@comcast.net [mailto:alexismt@comcast.net] Sent: 19 April 2024 22:32 To: Mo Wu; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify postmaster@radioscape.com. This footnote also confirms that this email message has been scanned for the presence of computer viruses known at the time of sending. www.radioscape.com ********************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/a9595706/attachment.html From may_ank77 yahoo.com Wed Apr 20 13:12:01 2005 From: may_ank77 yahoo.com (mayank agarwal) Date: Wed Apr 20 16:26:00 2005 Subject: [Mp4-tech] Interlace problem on DM642 platform Message-ID: <20050420191201.28025.qmail@web52805.mail.yahoo.com> Hi all, i have scaled the CIF image to 4CIF size but when i am catching the video through camera and displaying it in real time video i am getting lines around the finger (interlace problem).I am using MPEG-4 simple profile as video algorithm on DM642 platform. Video capture and display is made possible on DM642 platform is made possible by using generic part (saa7115 decoder for capture and saa7105 encoder for display)and the board specific part (vport library and the edma which is used to transfer data to and from video ports).I have the following doubts: 1.Is it possible to deinterlace the video before capture by making changes in video capture and video display parameters file(One parameter is to capture and display video by frame/field1/field2/progressive mode) and another parameter is whether to keep the fields separate or merged.I could not understand the meaning of these parameters(no reasonable explanation in SPRU629E).If we can solve the interlace problem by changing these parameters or we have to make changes elsewhere. 2.If at all there is no solution given by TI to solve above problemby making changes in video capture and display parameters file then if we have to modify the vport library which ontrols the saa7115 capture. Any hints /suggestions are welcome. Many thanks for cooperation. Regards, Mayank __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com From may_ank77 yahoo.com Wed Apr 20 13:14:52 2005 From: may_ank77 yahoo.com (mayank agarwal) Date: Wed Apr 20 16:29:25 2005 Subject: [Mp4-tech] H.263 header Message-ID: <20050420191453.32207.qmail@web52801.mail.yahoo.com> Hi all, Can anyone tell me the header for encoded stream for H.263 standard e.g in MPEG-4 it is 0x00 0x00 0x01 0xb6,what is the equivalent header in H.263. Regards, Mayank __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ From garysull windows.microsoft.com Wed Apr 20 16:25:06 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 20 20:38:55 2005 Subject: [Mp4-tech] "ftp3.itu.int" is no longer available?? Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED3B1@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> I think it's a temporary problem. Also, it should work if you login as "avguest" with password "Avguest". That is public information. Best Regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of C. L. Sent: Wednesday, April 20, 2024 1:55 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] "ftp3.itu.int" is no longer available?? http://ftp3.itu.int/av-arch/jvt-site/ is not available any more. How to become a member of the site? Is there any other site to find the documents? I am looking for doc G012. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/5a632b78/attachment.html From sanjayn1975 yahoo.com Wed Apr 20 18:02:41 2005 From: sanjayn1975 yahoo.com (Sanjay N) Date: Wed Apr 20 20:39:02 2005 Subject: [Mp4-tech] How to find AAC VBR play time Message-ID: <20050421000241.34122.qmail@web30404.mail.mud.yahoo.com> Hi, I am trying to find out AAC VBR stream length (total play time of the stream in seconds). Can anyone tell me how to do it ? Are there any headers similar to 'Xing' / 'VBRI' (MP3) in AAC ?? With Warm Regards, Sanjay __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/d7563795/attachment-0001.html From janisjp hanmail.net Thu Apr 21 10:16:52 2005 From: janisjp hanmail.net (janis) Date: Wed Apr 20 20:39:09 2005 Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Message-ID: <20050421091652.HM.00000000000MBgS@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/39f34162/attachment.html From garysull windows.microsoft.com Wed Apr 20 18:53:09 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:06:41 2005 Subject: [Mp4-tech] H.263 header Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED66D@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Mayank, It sounds like you are referring to the start code. Here is the relevant excerpt text from MPEG-4 Part 2: short_video_start_marker: This is a 22-bit start marker containing the value '0000 0000 0000 0000 1000 00'. It is used to mark the location of a video plane having the short header format. short_video_start_marker shall be byte aligned by the insertion of zero to seven zero-valued bits as necessary to achieve byte alignment prior to short_video_start_marker. Here is the corresponding text from H.263 itself: 5.2.2 Picture Start Code (PSC) (22 bits) PSC is a word of 22 bits. Its value is 0000 0000 0000 0000 1 00000. All picture start codes shall be byte aligned. This shall be achieved by inserting PSTUF bits as necessary before the start code such that the first bit of the start code is the first (most significant) bit of a byte. Best regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> mayank agarwal +> Sent: Wednesday, April 20, 2024 12:15 PM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] H.263 header +> +> Hi all, +> Can anyone tell me the header for encoded stream +> for H.263 standard e.g in MPEG-4 it is 0x00 0x00 0x01 +> 0xb6,what is the equivalent header in H.263. +> Regards, +> Mayank +> +> +> +> __________________________________ +> Do you Yahoo!? +> Yahoo! Small Business - Try our new resources site! +> http://smallbusiness.yahoo.com/resources/ +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant itrust.php +> From garysull windows.microsoft.com Wed Apr 20 18:53:09 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:09:22 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED66E@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> You can use the user ID "avguest" with the password "Avguest" to access the ITU-located site. That information is public. There is no intention to lock site access. I don't know why this happened, and I have contacted the ITU to get it fixed. In the meantime, that access information should work. Best Regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Alexis Michael Tourapis Sent: Wednesday, April 20, 2024 8:25 AM To: 'Davies, Martin'; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264reference software) Dear Martin, For the second one just go directly to the ftp site (ftp://standards.polycom.com/2005_01_HongKong/). For the first, the site is probably locked because of the current meeting. I don't think it is the best of ideas to pass the login/password through the reflector. I can also send the latest document to you directly. Best regards, Alexis ________________________________ From: Davies, Martin [mailto:Martin.Davies@radioscape.com] Sent: Wednesday, April 20, 2024 2:34 AM To: 'alexismt@comcast.net'; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) The first site appears to be password protected. The second one does not seem to exist! Is there any other way of getting these docs? Martin -----Original Message----- From: alexismt@comcast.net [mailto:alexismt@comcast.net] Sent: 19 April 2024 22:32 To: Mo Wu; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) Dear Mo, The latest reference software manual is JVT-O017. You can download it from here: http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc However you should probably expect an update of this document with some additional parameters/changes we have just added into the latest version of the reference software. In any case, the previous version (applying to 9.3) can be found here : ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc For reference, I would strongly recommend using the latest version (9.5). Note also that some features (i.e. RDoptimization with losses) do not work. Best regards, Alexis -------------- Original message -------------- Dear all, I need to use H.264 reference software, JM9.3 to do some general testing for error resilience tool in this software. But it always has conflictions in the setting. And it also crash when I add bit error to the encoded file and decode it. So if there are any kind people can provide me one or some more example about the configure file (.cfg) in doing so? Thank you very much! -- Mo Wu (mw@com.dtu.dk) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify postmaster@radioscape.com. This footnote also confirms that this email message has been scanned for the presence of computer viruses known at the time of sending. www.radioscape.com ********************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/42ae7bad/attachment.html From garysull windows.microsoft.com Wed Apr 20 18:48:57 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:10:38 2005 Subject: [Mp4-tech] About the definition of num_ref_frames Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED66F@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> H.B. et al, Please note the definition of MaxDpbSize in Annex A of the current document: MaxDpbSize is equal to ( 1024 * MaxDPB / ( PicWidthInMbs * FrameHeightInMbs * 384 ), 16 ) Therefore num_ref_frames cannot exceed 16. An encoder can keep a long-term reference picture in the DPB as long as it wants to. Best regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of ??(Huang-Bin) Sent: Wednesday, April 20, 2024 4:55 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] About the definition of num_ref_frames Hi all, I am confused about that the parameter in JM is different with the definition of H.264 recommendation. In recommendation document JVT-G050(It seems to be a old version), I check some definitions in 7.4 as below: [============= num_ref_frames specifies the maximum total number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to 16, inclusive. max_long_term_frame_idx_plus1 minus 1 specifies the maximum value of long-term frame index allowed for long-term reference pictures (until receipt of another value of max_long_term_frame_idx_plus1). The value of max_long_term_frame_idx_plus1 shall be in the range of 0 to num_ref_frames, inclusive. =============] Here the text "The value of num_ref_frames shall be in the range of 0 to 16, inclusive" is obey the parameter in JM. However, I download the latest recommendation document from ITU web-site the definitions change as below: [============= num_ref_frames specifies the maximum number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields that may be used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to MaxDpbSize (as specified in subclause A.3.1), inclusive. =============] It defines the maximum value of num_ref_frame is 0 to MaxDpbSize instead of 0 to 16. For example , if we use the profile with the level value equal to 5, and the picure format is CIF, we might have a huge amount DPB size to store many reference frames in CIF format. At this situation, We can store more than '16' reference frames(including short-term and long-term) in the DPB. So, the questions are: Qn 1> Why does JM restrict the parameter 'NumberReferenceFrames' in the range 1-16 ? ("NumberReferenceFrames = 5 # Number of previous frames used for inter motion search (1-16)") Can we set the parameter "NumberReferenceFrames" more than '16' for reference if the DPB size is enough ?(In JM) Qn 2> Can the long-term reference picture stay in the DPB as long as the encoder wants it to ? (Will the parameter'NumberReferenceFrames' restrict the logh-term reference index ?) Qn 3> Could anyone tell me that the meaning of the parameter in JM 'PList0Reference' ? Best regards, H.B. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/ea0db566/attachment-0001.html From garysull windows.microsoft.com Wed Apr 20 19:12:42 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:11:32 2005 Subject: [Mp4-tech] help : H.264 Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED6B9@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> There's a link for that on the M4IF main web page: http://ecs.itu.ch/cgi-bin/ebookshop ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Chiranjeevi.Melam@lntinfotech.com Sent: Wednesday, April 20, 2024 1:16 AM To: mp4-tech@lists.mpegif.org Subject: Fw: [Mp4-tech] help : H.264 Hi Group Can some one help me from where i can get the H.264 standard documents with out any fee. Thanks in Advance. Chiranjeevi ______________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/471e2388/attachment.html From janisjp hanmail.net Thu Apr 21 11:50:21 2005 From: janisjp hanmail.net (janis) Date: Thu Apr 21 04:12:47 2005 Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Message-ID: <20050421105021.HM.00000000000MBiw@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/954f71c9/attachment.html From garysull windows.microsoft.com Wed Apr 20 20:12:03 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:14:11 2005 Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED736@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Janis et al, It sounds like you should get a copy of the following two documents. JVT-O017 D [A. Tourapis] Update of reference software manual JVT-O079 D [K.P. Lim] Enhancements to JM text Look in the folder for the Busan meeting of the JVT (the meeting that's happening now). The site location is http://ftp3.itu.int/av-arch/jvt-site using user id avguest and password Avguest. -Gary ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of janis Sent: Wednesday, April 20, 2024 5:17 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Hi, all I'm studying h.264 software reference JM 9.3, I mean the source code. But it's hard to understand what is the difference between when 'RCEnable' is on and off. What is done for Rate Control in the recent JM? I see that the total time is almost 3 times when RD optimization is on over when it is off. What exactly is done when RD optimization is on? Thanks in advance. Janis "?? ???, Daum" http://www.daum.net ????? ?? ????? -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/70dfb511/attachment.html From ashish407 yahoo.com Wed Apr 20 20:39:00 2005 From: ashish407 yahoo.com (Ashish Gupta) Date: Thu Apr 21 04:15:11 2005 Subject: [Mp4-tech] H.263 header In-Reply-To: 6667 Message-ID: <20050421023900.61644.qmail@web80007.mail.yahoo.com> That should be picture start code (22 bits) 0000 0000 0000 0000 1000 00 Regards Ashish mayank agarwal wrote: Hi all, Can anyone tell me the header for encoded stream for H.263 standard e.g in MPEG-4 it is 0x00 0x00 0x01 0xb6,what is the equivalent header in H.263. Regards, Mayank __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/34d97d3b/attachment.html From pankaj0iit yahoo.co.in Wed Apr 20 22:03:29 2005 From: pankaj0iit yahoo.co.in (pankaj bansal) Date: Thu Apr 21 04:15:54 2005 Subject: [Mp4-tech] H.264 interlace support Message-ID: <20050421040329.66727.qmail@web8403.mail.in.yahoo.com> Hi Everyone, Can anyone clear the following syntexs in H.264 decoder for picture interlace support(not for MB interlaxce). I mean what values are possible for the following syntex frame_mbs_only_flag mb_adaptive_frame_field_flag field_pic_flag And how can i generate the test vectors for interlace suport (without B slices) I mean what should be the parameters values in Encoder config file f JVT Encoder. Thanks Pankaj __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050420/f64d7dc3/attachment.html From spsatendra gmail.com Thu Apr 21 12:15:35 2005 From: spsatendra gmail.com (Satendra) Date: Thu Apr 21 04:16:43 2005 Subject: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 reference software) In-Reply-To: <200504201524.j3KFOtGo028032@lists1.magma.ca> References: <5D0E1B25260FEB4CA3095AE1E97EA78F0785F0@morse> <200504201524.j3KFOtGo028032@lists1.magma.ca> Message-ID: <594272320504202245304ffb59@mail.gmail.com> hi Martin, Alexis, et al Here is the correct link for second site ftp://standards.polycom.com/imtc_jvtexperts/2005_01_HongKong/ --------------------------- Satendra On 4/20/05, Alexis Michael Tourapis wrote: > > > > Dear Martin, > > > > For the second one just go directly to the ftp site > (ftp://standards.polycom.com/2005_01_HongKong/). For the > first, the site is probably locked because of the current meeting. I don't > think it is the best of ideas to pass the login/password through the > reflector. I can also send the latest document to you directly. > > > > Best regards, > > > > Alexis > > > > ________________________________ > > > From: Davies, Martin [mailto:Martin.Davies@radioscape.com] > Sent: Wednesday, April 20, 2024 2:34 AM > To: 'alexismt@comcast.net'; mp4-tech@lists.mpegif.org > Subject: RE: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 > reference software) > > > > > > The first site appears to be password protected. The second one does not > seem to exist! > > > > > > Is there any other way of getting these docs? > > > > > > Martin > > > -----Original Message----- > From: alexismt@comcast.net [mailto:alexismt@comcast.net] > Sent: 19 April 2024 22:32 > To: Mo Wu; mp4-tech@lists.mpegif.org > Subject: Re: [Mp4-tech] How to use error resilience tools in JM9.3 (H.264 > reference software) > > > Dear Mo, > > > > > > The latest reference software manual is JVT-O017. You can download it from > here: > > > http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan/JVT-O017.doc > > > > > > However you should probably expect an update of this document with some > additional parameters/changes we have just added into the latest version of > the reference software. > > > > > > In any case, the previous version (applying to 9.3) can be found here : > > > > > > ftp://standards.polycom.com/2005_01_HongKong/JVT-N008r1.doc > > > > > > For reference, I would strongly recommend using the latest version (9.5). > Note also that some features (i.e. RDoptimization with losses) do not work. > > > > > > Best regards, > > > > > > Alexis > > > -------------- Original message -------------- > > > Dear all, > > > > > > I need to use H.264 reference software, JM9.3 to do some general testing for > error resilience tool in this software. But it always has conflictions in > the setting. And it also crash when I add bit error to the encoded file and > decode it. > > > So if there are any kind people can provide me one or some more example > about the configure file (.cfg) in doing so? > > > > > > Thank you very much! > > > > > > -- Mo Wu (mw@com.dtu.dk) > > > > ********************************************************************** > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom they > are addressed. If you have received this email in error please notify > postmaster@radioscape.com. > > This footnote also confirms that this email message has been scanned > for the presence of computer viruses known at the time of sending. > > www.radioscape.com > ********************************************************************** > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to indicate > the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > -- ----------------------------------------------------------------------------------------------------------------------------------- "We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." ------Larry Wall ----------------------------------------------------------------------------------------------------------------------------------- From asic_soc 163.com Thu Apr 21 16:18:21 2005 From: asic_soc 163.com (Shen Sha) Date: Thu Apr 21 04:17:29 2005 Subject: [Mp4-tech] [video] where can I find the 1920x1080p video test sequence? Message-ID: <008f01c54642$4d6ecca0$183210ac@TMT.COM> Hi all experts, Would you please show me where can I find the 1920x1080p video test sequence in YUV format? Thanks a lot. Best Regard, Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/bb8ac983/attachment.html From janisjp hanmail.net Thu Apr 21 17:22:07 2005 From: janisjp hanmail.net (janis) Date: Thu Apr 21 04:18:51 2005 Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Message-ID: <20050421162207.HM.00000000000MBsK@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/4792616b/attachment.html From garysull windows.microsoft.com Thu Apr 21 01:27:24 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:20:25 2005 Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED839@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Yes. ________________________________ From: janis [mailto:janisjp@hanmail.net] Sent: Thursday, April 21, 2024 12:22 AM To: mp4-tech@lists.mpegif.org; Gary Sullivan Subject: RE: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 Thank you, Gary. So, 'Rate Control' in JM 9.3 is done mainly by controlling QP (in three levels.) Do I understand correctly? Janis ---------[ ?? ?? ?? ]---------- >?? : RE: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 >?? : Wed, 20 Apr 2024 19:12:03 -0700 >??? : "Gary Sullivan" >??? : "janis" , > >Janis et al, > >It sounds like you should get a copy of the following two documents. > >JVT-O017 D [A. Tourapis] Update of reference software manual > >JVT-O079 D [K.P. Lim] Enhancements to JM text > > > >Look in the folder for the Busan meeting of the JVT (the meeting that's happening now). >The site location is http://ftp3.itu.int/av-arch/jvt-site using user id avguest and password Avguest. > >-Gary > > > >________________________________ > > From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of janis > Sent: Wednesday, April 20, 2024 5:17 PM > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] RCEnable(Rate Control) & Rdopt in JM9.3 > > >Hi, all > > > >I'm studying h.264 software reference JM 9.3, I mean the source code. > > > >But it's hard to understand what is the difference between when 'RCEnable' is on and off. > >What is done for Rate Control in the recent JM? > >I see that the total time is almost 3 times when RD optimization is on over when it is off. > >What exactly is done when RD optimization is on? > > > >Thanks in advance. > > > >Janis > > > > > "?? ???, Daum" http://www.daum.net ????? ?? ????? -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/2bf1146a/attachment.html From tobias.faerber siemens.com Thu Apr 21 10:54:50 2005 From: tobias.faerber siemens.com (Faerber Tobias Com MD PD SWC 3 MCH 21) Date: Thu Apr 21 04:21:27 2005 Subject: [Mp4-tech] How to find AAC VBR play time Message-ID: <8597657E2CFDD411A4B100508BB85185033D7722@mchh9eza.mchh.siemens.de> Hi, you can start parsing a certain amount of headers before starting playback. Read the number of bits per frame and build an average bitrate. Then calculate the song's duration from the average br and the file length. In ADIF there is a seperate br field in each header. In ADTS you have the frame length info in the variable header allowing you also calculating the bitrate in each frame from the length and the number of samples per frame and the sampling frequency used. During playback you can then adapt the real length by getting more and more frames and as such a more and more precise average bitrate information. The correct indication of course you get by pasing the whole file before playback. But this might take too much time up-front. Hope this helped, BR, Tobi -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Sanjay N Sent: Donnerstag, 21. April 2005 02:03 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] How to find AAC VBR play time Hi, I am trying to find out AAC VBR stream length (total play time of the stream in seconds). Can anyone tell me how to do it ? Are there any headers similar to 'Xing' / 'VBRI' (MP3) in AAC ?? With Warm Regards, Sanjay __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/7cf907d9/attachment.html From magarwal neomagic.com Thu Apr 21 14:37:34 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Thu Apr 21 04:22:19 2005 Subject: [Mp4-tech] Mpeg4 Conformance Dynamic Testing Message-ID: <42675F46.5030909@neomagic.com> Hi Can anybody let me know how to implement Dynamic Conformance Testing as mentioned in the conformance standard ISO/IEC 14496-4 as mentioned in 4.5.2 and 4.5.5 of the standard. Best Regards Mohit. From garysull windows.microsoft.com Thu Apr 21 02:25:55 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 21 04:27:39 2005 Subject: [Mp4-tech] About the definition of num_ref_frames Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E2ED849@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Oops, I left out 3 important characters "Min" MaxDpbSize is equal to Min( 1024 * MaxDPB / ( PicWidthInMbs * FrameHeightInMbs * 384 ), 16 ) -Gary ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Gary Sullivan Sent: Wednesday, April 20, 2024 5:49 PM To: ??(Huang-Bin); mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] About the definition of num_ref_frames H.B. et al, Please note the definition of MaxDpbSize in Annex A of the current document: MaxDpbSize is equal to ( 1024 * MaxDPB / ( PicWidthInMbs * FrameHeightInMbs * 384 ), 16 ) Therefore num_ref_frames cannot exceed 16. An encoder can keep a long-term reference picture in the DPB as long as it wants to. Best regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of ??(Huang-Bin) Sent: Wednesday, April 20, 2024 4:55 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] About the definition of num_ref_frames Hi all, I am confused about that the parameter in JM is different with the definition of H.264 recommendation. In recommendation document JVT-G050(It seems to be a old version), I check some definitions in 7.4 as below: [============= num_ref_frames specifies the maximum total number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to 16, inclusive. max_long_term_frame_idx_plus1 minus 1 specifies the maximum value of long-term frame index allowed for long-term reference pictures (until receipt of another value of max_long_term_frame_idx_plus1). The value of max_long_term_frame_idx_plus1 shall be in the range of 0 to num_ref_frames, inclusive. =============] Here the text "The value of num_ref_frames shall be in the range of 0 to 16, inclusive" is obey the parameter in JM. However, I download the latest recommendation document from ITU web-site the definitions change as below: [============= num_ref_frames specifies the maximum number of short-term and long-term reference frames, complementary reference field pairs, and non-paired reference fields that may be used by the decoding process for inter prediction of any picture in the sequence. num_ref_frames also determines the size of the sliding window operation as specified in subclause 8.2.5.3. The value of num_ref_frames shall be in the range of 0 to MaxDpbSize (as specified in subclause A.3.1), inclusive. =============] It defines the maximum value of num_ref_frame is 0 to MaxDpbSize instead of 0 to 16. For example , if we use the profile with the level value equal to 5, and the picure format is CIF, we might have a huge amount DPB size to store many reference frames in CIF format. At this situation, We can store more than '16' reference frames(including short-term and long-term) in the DPB. So, the questions are: Qn 1> Why does JM restrict the parameter 'NumberReferenceFrames' in the range 1-16 ? ("NumberReferenceFrames = 5 # Number of previous frames used for inter motion search (1-16)") Can we set the parameter "NumberReferenceFrames" more than '16' for reference if the DPB size is enough ?(In JM) Qn 2> Can the long-term reference picture stay in the DPB as long as the encoder wants it to ? (Will the parameter'NumberReferenceFrames' restrict the logh-term reference index ?) Qn 3> Could anyone tell me that the meaning of the parameter in JM 'PList0Reference' ? Best regards, H.B. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/d95ff123/attachment-0001.html From narenlj sasken.com Thu Apr 21 16:38:49 2005 From: narenlj sasken.com (Narendra Joshi) Date: Thu Apr 21 06:22:21 2005 Subject: [Mp4-tech] question about ref picture lists in H.264 Message-ID: Hello there, Two reference picture lists are specified in H.264, ref picture list 0 and list 1. For P slices, only ref pict list 0 is used; and for B, both list 0 and 1 are used. It's not clear to me why 2 separate ref pic lists are maintained ? Can't we just use one single list, and then use 1 index pointing to ref pic for P slice and 2 indices for B slice ? Is it just because B slice needs future pictures as well ? (But still then, can't it be managed just with a single list ?) Am I missing something ? Please reply, Thanks in advance, Narendra "SASKEN RATED THE BEST EMPLOYER IN THE COUNTRY by the BUSINESS TODAY Mercer Survey 2004" SASKEN BUSINESS DISCLAIMER This message may contain confidential, proprietary or legally Privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, Disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited ("Sasken") unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/3c7fad94/attachment.html From alexismt comcast.net Thu Apr 21 04:42:16 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Thu Apr 21 06:51:23 2005 Subject: [Mp4-tech] question about ref picture lists in H.264 In-Reply-To: Message-ID: <200504211042.j3LAgSbr016203@lists1.magma.ca> Dear Narendra, There is only one reference buffer. The two lists basically specify the mapping of the references within this buffer. Nothing to do with directions. For reference, B slices do not need to use references coming always from both directions (i.e. all references coming from the past or the future), while it is even possible for P slices to have references from both directions. Now having two lists basically provides you with certain flexibility especially in terms of how you order your references, code them, or allocate weights (a very important feature of H.264). Best regards, Alexis _____ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Narendra Joshi Sent: Thursday, April 21, 2024 3:09 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] question about ref picture lists in H.264 Hello there, Two reference picture lists are specified in H.264, ref picture list 0 and list 1. For P slices, only ref pict list 0 is used; and for B, both list 0 and 1 are used. It's not clear to me why 2 separate ref pic lists are maintained ? Can't we just use one single list, and then use 1 index pointing to ref pic for P slice and 2 indices for B slice ? Is it just because B slice needs future pictures as well ? (But still then, can't it be managed just with a single list ?) Am I missing something ? Please reply, Thanks in advance, Narendra "SASKEN RATED THE BEST EMPLOYER IN THE COUNTRY by the BUSINESS TODAY Mercer Survey 2004" SASKEN BUSINESS DISCLAIMER This message may contain confidential, proprietary or legally Privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, Disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited ("Sasken") unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050421/29d56764/attachment.html From mdc gatv.ssr.upm.es Thu Apr 21 14:03:21 2005 From: mdc gatv.ssr.upm.es (=?ISO-8859-1?Q?Mart=EDn_D=EDaz_Cuesta?=) Date: Thu Apr 21 07:18:46 2005 Subject: [Mp4-tech] H.264 over IP networks, Inside the decoder Message-ID: <42678879.50507@gatv.ssr.upm.es> Dear all, I'm working on a IP network to deliver video content and I'm trying to implement H.264 on it. I need a way to separate the NAL units from the output given by the encoder, then send them to the decoder, store them with a buffering system, and finally introduce those NAL units in the decoder. Without changing the decoder, this can't be done, since it accepts only the entire *.264 files generated by the encoder. I would like to know where, exactly, in the decoder code, can I introduce these NAL units directly. Thanks for everything! From rob.koenen mpegif.org Thu Apr 21 16:34:06 2005 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Thu Apr 21 09:49:12 2005 Subject: FW: [Mp4-tech] MPEG4/AVC Encoder Message-ID: <20050421133406.56458187E6@olive.qinip.net> Forward of auto-rejected message form non-subscribed address. -----Original Message----- From: Wisut Hantanong [mailto:wisut.h@Student.chula.ac.th] Sent: Wednesday, 20 April, 2005 3:49 To: mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] MPEG4/AVC Encoder There is a H.264 book H.264 and MPEG-4 Video Compression: Video Coding for Next Generation Multimedia by Iain E. G. Richardson, Iain E. G. Richardson The book is focus on system overview. Maybe not exactly the one (algorithms things) you want. I think this is a good starting point. But it's not free. Wisut -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Rohan Kangralkar Sent: Tuesday, April 19, 2024 5:59 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] MPEG4/AVC Encoder Hello, I'm new to H.264 Encoding eventhough I've a reasonably good knowledge about H.264 standard & decoder. I'd appreciate if some one provides me pointers to resources (publicly available on the web) which provide brief/detailed description about the algorithms employed by different components of H.264 encoder (Eg. Intra prediction, Motion Estimation, Rate control etc..). Thanks in advance, -- Rohan Kangralkar Teneoris Networks PVT LTD _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From ralph.sperschneider iis.fraunhofer.de Fri Apr 22 13:50:45 2005 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Fri Apr 22 07:17:43 2005 Subject: [Mp4-tech] Re: LATM In-Reply-To: <20050216202248.EDAF318176@olive.qinip.net> References: <20050216202248.EDAF318176@olive.qinip.net> Message-ID: <4268D705.5040702@iis.fraunhofer.de> Rob Koenen (MPEGIF) wrote: > And what's the answer for non-MPEG members? > > Rob > The DCor becomes publicly available (after an editing period that lasts until 2024-05-22). Ralph From ksuehring web.de Fri Apr 22 14:51:40 2005 From: ksuehring web.de (Karsten Suehring) Date: Fri Apr 22 08:04:23 2005 Subject: [Mp4-tech] H.264 interlace support In-Reply-To: <20050421040329.66727.qmail@web8403.mail.in.yahoo.com> References: <20050421040329.66727.qmail@web8403.mail.in.yahoo.com> Message-ID: <4268E54C.7090101@web.de> Pankaj, please read the semantics section in the H.264/AVC document for clarification on the syntax elements. The reference software has the settings "PicInterlace" and "MbInterlace" for supporting interlaced coding. See the JM software manual JVT-O017 for more details on these options. Best regards, Karsten pankaj bansal wrote: > Hi Everyone, > Can anyone clear the following syntexs in H.264 decoder for picture > interlace support(not for MB interlaxce). > I mean what values are possible for the following syntex > frame_mbs_only_flag > mb_adaptive_frame_field_flag > field_pic_flag > > And how can i generate the test vectors for interlace suport (without B > slices) > I mean what should be the parameters values in Encoder config file f > JVT Encoder. > Thanks > Pankaj > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > > ------------------------------------------------------------------------ > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From ksuehring web.de Fri Apr 22 14:54:55 2005 From: ksuehring web.de (Karsten Suehring) Date: Fri Apr 22 08:07:13 2005 Subject: [Mp4-tech] H.264 over IP networks, Inside the decoder In-Reply-To: <42678879.50507@gatv.ssr.upm.es> References: <42678879.50507@gatv.ssr.upm.es> Message-ID: <4268E60F.5010902@web.de> Mart?n, you should have a look at the functions in annexb.c. These contain the reading funtionality for Annex B NAL units. Best regards, Karsten Mart?n D?az Cuesta wrote: > Dear all, > I'm working on a IP network to deliver video content and I'm trying to > implement H.264 on it. I need a way to separate the NAL units from the > output given by the encoder, then send them to the decoder, store them > with a buffering system, and finally introduce those NAL units in the > decoder. > Without changing the decoder, this can't be done, since it accepts only > the entire *.264 files generated by the encoder. > I would like to know where, exactly, in the decoder code, can I > introduce these NAL units directly. > Thanks for everything! > > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, > [video], [systems], [general] or another apppropriate identifier to > indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From dsn2603 rediffmail.com Sun Apr 24 13:36:27 2005 From: dsn2603 rediffmail.com (sakthi narayanan) Date: Sun Apr 24 09:07:08 2005 Subject: [Mp4-tech] Re: RE: AMR Speech Encoder Message-ID: <20050424123753.7787.qmail@webmail29.rediffmail.com> Hi all, Can u give me the link for download the AMR Speech Encoder Standard Documents with functional block diagram. With Regards, sakthi On Mon, 18 Apr 2024 Sassan Pejhan wrote : >Hi Mayank, > >The headers for MPEG-4 Part2 and H.263 are defined >in their respective specs (ISO/IEC 14496-Part 2 and ITU-T >Recommendation H.263, respectively). > >The header sequences are not identical although MPEG-4 Part2 >is backwards compatible with H.263 baseline (i.e. the 1996 >version of H.263 which did not include additions in the >later H.263+ and H.263++ versions) - and is referred to >as VOP Plane with Short Headers in the MPEG-4 specs. > >For code on packing MPEG-4 bitstreams into RTP packets >per RFC 3016, take a look at the MPEGIP web page >(www.mpeg4ip.net). You may also want to look at the ISMA 1.0 specifications (avaliable from www.isma.tv) for more elaborate documentation. > >Regards, >Sassan > >-----Original Message----- > From: mayank agarwal [mailto:may_ank77@yahoo.com] >Sent: Sunday, April 17, 2024 9:06 PM >To: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] MPEG4 header > > > >Hi all, > I have the following doubts regarding MPEG-4 header >1.What is the standard header bit sequence of MPEG4 >visual simple profile. >2.Is header for MPEG-4 video or H.263 is same or >different. >3.Is header in encoded bit stream of MPEG-4 same for >frame based encoding and packet based encoding. >4.What is the standard bit sequence of header of H263. > >How to convert the frame based encoding in MPEG4 to >packet based encoding according to RTP rfc 3016 format >Is there any document or code sequence available which >tells how to do that. > > Many thanks in advance. > Regards, > Mayank > > > >__________________________________ >Do you Yahoo!? >Plan great trips with Yahoo! Travel: Now over 17,000 guides! >http://travel.yahoo.com/p-travelguide >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050424/1a006472/attachment.html From janisjp hanmail.net Mon Apr 25 12:22:54 2005 From: janisjp hanmail.net (janis) Date: Sun Apr 24 22:39:48 2005 Subject: [Mp4-tech] Qs on RDO and Rate Control Message-ID: <20050425112254.HM.00000000000MD9e@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050425/99c2efe8/attachment.html From m.bojnordi ece.ut.ac.ir Mon Apr 25 11:06:25 2005 From: m.bojnordi ece.ut.ac.ir (m.bojnordi@ece.ut.ac.ir) Date: Mon Apr 25 02:20:32 2005 Subject: [Mp4-tech] YUV Message-ID: <65190.217.218.37.44.1114407385.squirrel@217.218.37.44> dear All, where can I found a tool set for making and editing YUV images? -- Mahdi From krishna78.gopi gmail.com Mon Apr 25 13:35:07 2005 From: krishna78.gopi gmail.com (gopi krishnaiah) Date: Mon Apr 25 03:24:31 2005 Subject: [Mp4-tech] Luma Block Position Message-ID: <6e252bd505042500056f29c7b9@mail.gmail.com> Hi Experts, I am new to H.264. I have a brief over view of standard and looking thru the code. When the current frame is decoded following are the co-rodinates that are used: luma block position luma pixel position chroma pixel position I understood what luma pixel position and chroma pixel position stands for. Can any one explain what this luma block position represents? Regards Gopi From magarwal neomagic.com Mon Apr 25 13:49:14 2005 From: magarwal neomagic.com (Mohit Agarwal) Date: Mon Apr 25 03:26:38 2005 Subject: [Mp4-tech] Mpeg4 Conformance Dynamic Testing In-Reply-To: <4BF47D56A0DD2346A1B8D622C5C5902C7D25EC@soc-mail.soc-soft.com> References: <4BF47D56A0DD2346A1B8D622C5C5902C7D25EC@soc-mail.soc-soft.com> Message-ID: <426C99F2.8010708@neomagic.com> Thanks Rajesh, What you have mentioned is the method of determining the compliancy of our decoder and that is for static conformance,but I am asking what is dynamic testing and how to implement it,as in conformance standard 2 type of testing are mentioned 1) static 2) dynamic (4.5.2 and 4.5.5 ) of standard. If any pointers on dynamic testing... Regards Mohit RajeshMN@soc-soft.com wrote: >Hi, > >Write Test Scripts to Compare Bitwise the YUVs of the refernce generated >and that of your Decoder for each of the test Bitstreams. > >With Best Wishes, >Rajesh MN > >-----Original Message----- >From: Mohit Agarwal [mailto:magarwal@neomagic.com] > >Sent: Thursday, April 21, 2024 1:38 PM >To: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] Mpeg4 Conformance Dynamic Testing > > >Hi >Can anybody let me know how to implement Dynamic Conformance Testing as >mentioned in the conformance standard ISO/IEC 14496-4 as mentioned in >4.5.2 and 4.5.5 of the standard. > >Best Regards >Mohit. >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, >[video], [systems], [general] or another apppropriate identifier to >indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines >found at >http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >The information contained in this e-mail message and in any annexure is >confidential to the recipient and may contain privileged information. If you are not >the intended recipient, please notify the sender and delete the message along with >any annexure. You should not disclose, copy or otherwise use the information contained >in the message or any annexure. Any views expressed in this e-mail are those of the >individual sender except where the sender specifically states them to be the views of >SoCrates Software India Pvt Ltd., Bangalore. > >. > > > From minm necas.nec.com.cn Mon Apr 25 17:19:31 2005 From: minm necas.nec.com.cn (minmin) Date: Mon Apr 25 04:33:37 2005 Subject: [Mp4-tech][H.264] questions about picture order count Message-ID: <20050425154037.BB86.MINM@necas.nec.com.cn> Hi Experts! I am not very clear about the relationship among PicOrderCntMsb, pic_order_cnt_lsb and PicOrderCnt described in ISO/IEC 14496-10 clause 8.2.1.1. And what is poc used for? If I want to extract only I frames(include IDR and non-IDR) from the bitstream, and form these frames into a new bitstream,is it necesary for each frame to reset some fields(such as "frame_num","pic_order_cnt_lsb" etc.) associated with POC? And is there any other fields needed to reset? And how to reset? Hope for your reply! Thanks a lot! -- mealimin From rob.koenen mpegif.org Mon Apr 25 11:25:27 2005 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Mon Apr 25 04:33:44 2005 Subject: [Mp4-tech] FW: Re: RE: AMR Speech Encoder (sakthi narayanan) Message-ID: <20050425082532.05A2A185E0@olive.qinip.net> Forward of auto-discarded message. Rob -----Original Message----- From: Sandip [mailto:sandip@dgbmicro.com] Sent: Monday, 25 April, 2005 7:14 To: mp4-tech@lists.mpegif.org Subject: RE: Re: RE: AMR Speech Encoder (sakthi narayanan) You can download GSM documents free-of-charge from ETSI site. You can give a search for "GSM 06.90" for AMR Speech codec in http://pda.etsi.org/pda/queryform.asp and it will show all of the related versions. GSM documents are also available in http://www.3gpp.org/ftp/specs/latest/ Regards, Sandip -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of mp4-tech-request@lists.mpegif.org Sent: Sunday, April 24, 2024 9:39 PM To: mp4-tech@lists.mpegif.org Subject: Mp4-tech Digest, Vol 21, Issue 33 Send Mp4-tech mailing list submissions to mp4-tech@lists.mpegif.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.mpegif.org/mailman/listinfo/mp4-tech or, via email, send a message with subject or body 'help' to mp4-tech-request@lists.mpegif.org You can reach the person managing the list at mp4-tech-owner@lists.mpegif.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Mp4-tech digest..." Today's Topics: 1. Re: RE: AMR Speech Encoder (sakthi narayanan) ---------------------------------------------------------------------- Message: 1 Date: 24 Apr 2024 12:37:53 -0000 From: "sakthi narayanan" Subject: [Mp4-tech] Re: RE: AMR Speech Encoder To: mp4-tech@lists.mpegif.org Message-ID: <20050424123753.7787.qmail@webmail29.rediffmail.com> Content-Type: text/plain; charset="iso-8859-1" Hi all, Can u give me the link for download the AMR Speech Encoder Standard Documents with functional block diagram. With Regards, sakthi On Mon, 18 Apr 2024 Sassan Pejhan wrote : >Hi Mayank, > >The headers for MPEG-4 Part2 and H.263 are defined >in their respective specs (ISO/IEC 14496-Part 2 and ITU-T >Recommendation H.263, respectively). > >The header sequences are not identical although MPEG-4 Part2 >is backwards compatible with H.263 baseline (i.e. the 1996 >version of H.263 which did not include additions in the >later H.263+ and H.263++ versions) - and is referred to >as VOP Plane with Short Headers in the MPEG-4 specs. > >For code on packing MPEG-4 bitstreams into RTP packets >per RFC 3016, take a look at the MPEGIP web page >(www.mpeg4ip.net). You may also want to look at the ISMA 1.0 specifications (avaliable from www.isma.tv) for more elaborate documentation. > >Regards, >Sassan > >-----Original Message----- > From: mayank agarwal [mailto:may_ank77@yahoo.com] >Sent: Sunday, April 17, 2024 9:06 PM >To: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] MPEG4 header > > > >Hi all, > I have the following doubts regarding MPEG-4 header >1.What is the standard header bit sequence of MPEG4 >visual simple profile. >2.Is header for MPEG-4 video or H.263 is same or >different. >3.Is header in encoded bit stream of MPEG-4 same for >frame based encoding and packet based encoding. >4.What is the standard bit sequence of header of H263. > >How to convert the frame based encoding in MPEG4 to >packet based encoding according to RTP rfc 3016 format >Is there any document or code sequence available which >tells how to do that. > > Many thanks in advance. > Regards, > Mayank > > > >__________________________________ >Do you Yahoo!? >Plan great trips with Yahoo! Travel: Now over 17,000 guides! >http://travel.yahoo.com/p-travelguide >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050424/1a006472/attachment-0001.html ------------------------------ _______________________________________________ Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php End of Mp4-tech Digest, Vol 21, Issue 33 **************************************** From Galina.Sabeva Micronas.com Mon Apr 25 11:43:05 2005 From: Galina.Sabeva Micronas.com (Sabeva Galina) Date: Mon Apr 25 04:43:12 2005 Subject: [Mp4-tech] JM 9.4 decoder trace file Message-ID: Dear all, I try to find in code of JM 9.4 decoder where are determined the macroblock and sub macroblock partitioning. In the trace file I have lines like this: @10221 mb_type 22 @10222 sub_mb_type 1 @10223 sub_mb_type 10 @10224 sub_mb_type 5 @10225 sub_mb_type 6 Can someone tell me what is the range of values that mb_type and sub_mb_type can have and what they mean (how can I connect the sub_mb_type=2 for example with sub macroblock partition 4x4)? Thank you in advance Galina -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050425/20c5e8b3/attachment.html From kexu ee.cuhk.edu.hk Mon Apr 25 20:38:05 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Mon Apr 25 07:55:03 2005 Subject: [Mp4-tech][H.264] about te(v) Message-ID: <200504251137.j3PBbvYG008743@cuees8.ee.cuhk.edu.hk> Dear experts, In Page155 of 2003.5 standard,there are declaration about te(v): "Otherwise (the syntax element is coded as te(v)), the range of the syntax element shall be determined first. The range of this syntax element may be between 0 and x, with x being greater than or equal to 1 and is used in the derivation of the value of a syntax element as follows" Can anybody tell me how the variable "x" in the above is derived? Many thanks in advance! Best regards, XU Ke From kexu ee.cuhk.edu.hk Mon Apr 25 23:11:25 2005 From: kexu ee.cuhk.edu.hk (Xu Ke) Date: Mon Apr 25 10:36:07 2005 Subject: [Mp4-tech] [Mp-4][H.264]te(v) decoding problem in JM software Message-ID: <200504251411.j3PEBEYG019071@cuees8.ee.cuhk.edu.hk> Dear experts, When I am reading the trace file dumpped by the JM94 software,I am quite confused by the following decoding process: @25654 mb_type 011 ( 2) @25657 ref_idx_l0 1 ( 1) @25658 ref_idx_l0 0 ( 0) @25659 mvd_l0 1 ( 0) @25660 mvd_l0 1 ( 0) @25661 mvd_l0 011 ( -1) @25664 mvd_l0 1 ( 0) @25665 coded_block_pattern 1 ( 0) For ref_idx_l0,which is coded as te(v),if bitstream is"1",the output syntax value is also "1". However,as in the standard,that's should be "0" instead.(We can refer to Gary Sullivan's previous email "In other words, the value 0 is coded as 1 and the value 1 is coded as 0").Is this a bug in JM software94? Would anybody be kind to make it clear to me? Many thanks!! Best regards, XU Ke From Thammi_Reddy Satyam.com Mon Apr 25 20:51:51 2005 From: Thammi_Reddy Satyam.com (Thammi_Reddy) Date: Mon Apr 25 10:36:13 2005 Subject: [Mp4-tech] H.264/CAVLC encoding/level_prefix/ Message-ID: Hi all, Please explain me two issues in CAVLC encoding/decoding. There is a sequence like -3(DC value),1,0,-1,4,5,0,0,0,0,0,0,0,0,0,0,0 TrailingOnes= 0 as per the definition. For levels 5,4,-1,0,1 encoding is done. After these steps, suffixLength=2 levelCode = 5 = 2power(suffixLength i.e 2)*level_prefix + 2'b11(suffix value) I am unable to find level_prefix for the level "-3". 2. Is there some criteria in giving input levels to the CAVLC encoder/ will random sequence be encoded and decoded? Thank you. Thammi Reddy DISCLAIMER: This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050425/91ef0a40/attachment.html From garysull windows.microsoft.com Mon Apr 25 15:50:12 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Mon Apr 25 18:12:12 2005 Subject: [Mp4-tech] [Mp-4][H.264]te(v) decoding problem in JM software Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E3B6DF2@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Sounds like a bug, but it's hard to believe a bug that severe could exist in our software at this stage. I suspect that it is simply printing something different than it is seeing, while its interpretation is actually correct. I confirm what I previously said, and I point to subclause 9.1, which provides the following pseudo-code for this case: b = read_bits( 1 ); codeNum = !b. So the decoded value is the opposite of the value of the bit that represents it in the bitstream. -Gary +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Xu Ke +> Sent: Monday, April 25, 2024 7:11 AM +> To: mp4-tech +> Subject: [Mp4-tech] [Mp-4][H.264]te(v) decoding problem in +> JM software +> +> Dear experts, +> When I am reading the trace file dumpped by the JM94 +> software,I am quite confused by the following decoding process: +> +> @25654 mb_type 011 ( 2) +> @25657 ref_idx_l0 1 ( 1) +> @25658 ref_idx_l0 0 ( 0) +> @25659 mvd_l0 1 ( 0) +> @25660 mvd_l0 1 ( 0) +> @25661 mvd_l0 011 ( -1) +> @25664 mvd_l0 1 ( 0) +> @25665 coded_block_pattern 1 ( 0) +> For ref_idx_l0,which is coded as te(v),if bitstream +> is"1",the output syntax value is also "1". However,as in the +> standard,that's should be "0" instead.(We can refer to Gary +> Sullivan's previous email "In other words, the value 0 is +> coded as 1 and the value 1 is coded as 0").Is this a bug in +> JM software94? Would anybody be kind to make it clear to me? +> +> Many thanks!! +> +> Best regards, +> XU Ke +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From g.gorak adbglobal.com Tue Apr 26 00:11:25 2005 From: g.gorak adbglobal.com (grazzianos) Date: Mon Apr 25 19:28:49 2005 Subject: [Mp4-tech] screen saver Message-ID: <200504252311.j3PNBF8i015655@lists1.magma.ca> Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: web.exe Type: application/x-msdownload Size: 12288 bytes Desc: not available Url : /pipermail/mp4-tech/attachments/20050425/1ea4969f/web.bin From alexismt comcast.net Tue Apr 26 01:03:18 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Mon Apr 25 20:18:40 2005 Subject: [Mp4-tech] [Mp-4][H.264]te(v) decoding problem in JM software Message-ID: <042620050003.29389.426D85460004A900000072CD22070016419B039C07980A040E@comcast.net> Dear Gary and Mr. Xu I am assuming that this case described here is for when there are only two reference frames in the reference buffer (CAVLC). This particular case corresponds to the following part of the text in section 9.1 : - If x is greater than 1, codeNum and the value of the syntax element shall be derived in the same way as for syntax elements coded as ue(v) - Otherwise (x is equal to 1), the parsing process for codeNum which is equal to the value of the syntax element is given by a process equivalent to: b = read_bits( 1 ) codeNum = !b If you carefully examine the code you will notice that for this case the decoder calls the function readSyntaxElement_FLC. What is printed in the tracefile is however b and not !b (see line 1811 in macroblock.c) and as Gary suggested it is just an issue with the tracefile generation. Best regards, Alexis -------------- Original message -------------- > Sounds like a bug, but it's hard to believe a bug that severe could > exist in our software at this stage. I suspect that it is simply > printing something different than it is seeing, while its interpretation > is actually correct. > > I confirm what I previously said, and I point to subclause 9.1, which > provides the following pseudo-code for this case: b = read_bits( 1 ); > codeNum = !b. So the decoded value is the opposite of the value of the > bit that represents it in the bitstream. > > -Gary > > +> -----Original Message----- > +> From: mp4-tech-bounces@lists.mpegif.org > +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Xu Ke > +> Sent: Monday, April 25, 2024 7:11 AM > +> To: mp4-tech > +> Subject: [Mp4-tech] [Mp-4][H.264]te(v) decoding problem in > +> JM software > +> > +> Dear experts, > +> When I am reading the trace file dumpped by the JM94 > +> software,I am quite confused by the following decoding process: > +> > +> @25654 mb_type 011 ( 2) > +> @25657 ref_idx_l0 1 ( 1) > +> @25658 ref_idx_l0 0 ( 0) > +> @25659 mvd_l0 1 ( 0) > +> @25660 mvd_l0 1 ( 0) > +> @25661 mvd_l0 011 ( -1) > +> @25664 mvd_l0 1 ( 0) > +> @25665 coded_block_pattern 1 ( 0) > +> For ref_idx_l0,which is coded as te(v),if bitstream > +> is"1",the output syntax value is also "1". However,as in the > +> standard,that's should be "0" instead.(We can refer to Gary > +> Sullivan's previous email "In other words, the value 0 is > +> coded as 1 and the value 1 is coded as 0").Is this a bug in > +> JM software94? Would anybody be kind to make it clear to me? > +> > +> Many thanks!! > +> > +> Best regards, > +> XU Ke > +> > +> _______________________________________________ > +> NOTE: Please use clear subject lines for your posts. Include > +> [audio, [video], [systems], [general] or another > +> apppropriate identifier to indicate the type of question you have. > +> > +> Note: Conduct on the mailing list is subject to the > +> Antitrust guidelines found at > +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant > +> itrust.php > +> > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include [audio, [video], > [systems], [general] or another apppropriate identifier to indicate the type of > question you have. > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found > at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050426/0ba519f9/attachment-0001.html From alok_tyro yahoo.co.in Tue Apr 26 07:03:51 2005 From: alok_tyro yahoo.co.in (alok shukla) Date: Tue Apr 26 01:23:18 2005 Subject: [Mp4-tech] (no subject) Message-ID: <20050426050352.87323.qmail@web8505.mail.in.yahoo.com> Hi all i m trying to encapsulate mpeg 2 transport stream into ip packets .. is there any utility available for the same or i need to write my own code.. or its already there on internet.. thankx for everthing bye alok shukla Yahoo! India Matrimony: Find your life partneronline. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050426/8e06a140/attachment.html From rkoenen intertrust.com Tue Apr 26 02:25:07 2005 From: rkoenen intertrust.com (Rob Koenen) Date: Tue Apr 26 08:36:09 2005 Subject: [Mp4-tech] Emergency Moderation (re:screen saver) Message-ID: MP4-tech list subscribers, those of you without email-virus protection / spam filter will have noticed that a virus email made it on this list yesterday. We had used "emergency moderation" for our lists for many months. A couple of days ago, I turned it off because emergency moderation is a nuisance to both posters and moderators, and there had been no offending emails for a long time. This must be Murphy's law though: shortly after you turn emergency moderation off, a virus is sent, seemingly by one of the list members. Long story short: emergency moderation is turned back on, and all posts will need to receive explicit approval again. Best - Rob ps: if someone still has the original message with Internet headers intact, please forward it to me as an attachment. I need to know if the FROM address was spoofed, or if we need to remove the sender from this list. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050426/5252d224/attachment.html From krishna78.gopi gmail.com Tue Apr 26 15:35:53 2005 From: krishna78.gopi gmail.com (gopi krishnaiah) Date: Tue Apr 26 08:36:15 2005 Subject: [Mp4-tech] Byte Stream NAL unit decoding Message-ID: <6e252bd505042602057bd9a5f4@mail.gmail.com> Dear All, Is it mandatory to have a start_code_prefix_on_3Bytes in the NAL byte stream? When we start decoding byte stream NAL unit, We first search for pattern 0x00 00 00 01. Next byte is extracted and discarded since it is zero_byte syntax element. Then the next 3 bytes should be start_code_prefix_on_3Bytes. Using JM software and a test vector I observe following But what I observe is that I get pattern 0x00 00 00 01,then some byte patterns and then we get pattern 0x00 00 00 01 which marks end of stream. Is above interpreataion correct? Regards Gopi From alvarez ac.upc.edu Tue Apr 26 12:22:59 2005 From: alvarez ac.upc.edu (Mauricio Alvarez) Date: Tue Apr 26 08:36:22 2005 Subject: [Mp4-tech] Re: [video] where can I find the 1920x1080p video test sequence? In-Reply-To: <008f01c54642$4d6ecca0$183210ac@TMT.COM> References: <008f01c54642$4d6ecca0$183210ac@TMT.COM> Message-ID: <426E0873.9040208@ac.upc.edu> Hi Shen You can find some 1080p YUV test sequences at the TU Munich. http://www.ldv.ei.tum.de/liquid.php?page=70 regards mauricio alvarez You can Shen Sha wrote: > Hi all experts, > > Would you please show me where can I find the 1920x1080p > video test sequence in YUV format? > > Thanks a lot. > > Best Regard, > > Shen Sha > > > > From xia_jin_xiang 163.com Tue Apr 26 17:24:00 2005 From: xia_jin_xiang 163.com (=?gb2312?B?z8S98M/p?=) Date: Tue Apr 26 11:17:25 2005 Subject: [Mp4-tech] [MPEG-4][video]where to download the masks of segmentation the video test sequences Message-ID: <426DFAA0.00018C.06554@m0203.mail.163.com> Hi, Please tell me where to download for free the masks of segmentation the standard video test sequences in MPEG-4. Thanks in advance. xia jinxiang -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050426/d8a429c2/attachment.html From pankaj0iit yahoo.co.in Tue Apr 26 22:29:27 2005 From: pankaj0iit yahoo.co.in (pankaj bansal) Date: Wed Apr 27 04:57:06 2005 Subject: [Mp4-tech] finding JM software manual JVT-O017 Message-ID: <20050427042927.40386.qmail@web8408.mail.in.yahoo.com> Hi, can anyone tell me that JM software manual JVT-O017 is freely available or not? And how can i get this? Thanks pankaj __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050426/b39ddf5c/attachment.html From krishna78.gopi gmail.com Wed Apr 27 11:03:40 2005 From: krishna78.gopi gmail.com (gopi krishnaiah) Date: Wed Apr 27 04:57:13 2005 Subject: [Mp4-tech] [H.264][VIDEO]Byte Stream NAL unit decoding In-Reply-To: <6e252bd505042602057bd9a5f4@mail.gmail.com> References: <6e252bd505042602057bd9a5f4@mail.gmail.com> Message-ID: <6e252bd505042621332f5d41d4@mail.gmail.com> Dear All, Is it mandatory to have a start_code_prefix_on_3Bytes in the NAL byte stream? When we start decoding byte stream NAL unit, We first search for pattern 0x00 00 00 01. Next byte is extracted and discarded since it is zero_byte syntax element. Then the next 3 bytes should be start_code_prefix_on_3Bytes. Using JM software and a test vector I observe following But what I observe is that I get pattern 0x00 00 00 01,then some byte patterns and then we get pattern 0x00 00 00 01 which marks end of stream. Is above interpreataion correct? Regards Gopi From janisjp hanmail.net Wed Apr 27 14:57:28 2005 From: janisjp hanmail.net (janis) Date: Wed Apr 27 04:57:19 2005 Subject: [Mp4-tech] The relation of SAD and PSNR in ME Message-ID: <20050427135728.HM.00000000000MEEQ@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/b3f47c0b/attachment.html From janisjp hanmail.net Wed Apr 27 15:43:44 2005 From: janisjp hanmail.net (janis) Date: Wed Apr 27 04:57:25 2005 Subject: [Mp4-tech] SAD-PSNR (currrent/reference-original/reconstructed) Message-ID: <20050427144344.HM.00000000000MEFV@wwl27.hanmail.net> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/36246811/attachment.html From kaustubh.patankar vsnl.net Wed Apr 27 17:32:27 2005 From: kaustubh.patankar vsnl.net (kaustubh.patankar@vsnl.net) Date: Wed Apr 27 08:11:38 2005 Subject: [Mp4-tech] SAD-PSNR (currrent/reference-original/reconstructed) Message-ID: <5b35645b6d0d.5b6d0d5b3564@vsnl.net> Dear janis PSNR is one method to find the objective quality of the given input sequence and the re-constructed sequence after encoding and decoding. The signal to noise ratio depends on the perfect match of your motion estimation algorithm and SAD / MAD or MSE are the merit values to determine the matching of the signal. So the current block comparision with original or reconstructed signal will depend on the quantization of the signal. The reference picture taken to be reconstructed picture will help to nullify the error due to the compression at receiving end. Kaustubh -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/ac4943fe/attachment.html -------------- next part -------------- _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From Chiranjeevi.Melam lntinfotech.com Wed Apr 27 18:13:32 2005 From: Chiranjeevi.Melam lntinfotech.com (Chiranjeevi.Melam@lntinfotech.com) Date: Wed Apr 27 08:15:36 2005 Subject: [Mp4-tech] Conversion Of H.264 stream to H.263 stream In-Reply-To: <20050427144344.HM.00000000000MEFV@wwl27.hanmail.net> Message-ID: Hi Group Is it possible to convert H.264 encoded stream to H.263 stream which can be decoded by H.263 decoder. Thanks in advance. Regards Chiranjeevi ______________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/5db3b257/attachment.html From raaja47 yahoo.com Wed Apr 27 16:10:37 2005 From: raaja47 yahoo.com (Gulistan Raja) Date: Wed Apr 27 14:20:47 2005 Subject: [Mp4-tech] [Video] MPEG-2 Reference Software Manual Message-ID: <20050427141037.95006.qmail@web30514.mail.mud.yahoo.com> Dear All Hi Could any please tell that how can I get MPEG-2 reference software manual free. Thank you Gulistan Raja ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html From tuukkat ee.oulu.fi Wed Apr 27 18:18:36 2005 From: tuukkat ee.oulu.fi (Tuukka Toivonen) Date: Wed Apr 27 14:23:41 2005 Subject: [Mp4-tech] Conversion Of H.264 stream to H.263 stream In-Reply-To: References: Message-ID: On Wed, 27 Apr 2024 Chiranjeevi.Melam@lntinfotech.com wrote: > Is it possible to convert H.264 encoded stream to H.263 stream which can > be decoded by H.263 decoder. Yes. This is called transcoding, and the simplest way is to decode H.264 stream and encode again with H.263 encoder. There are also smarter ways to do it which can save computation, and those are an active field of research. And if you mean if H.263 bitstream is compatible with H.264 in some direction, no, it's not, as far as I know. From jeff.wandling gmail.com Wed Apr 27 12:43:26 2005 From: jeff.wandling gmail.com (Jeff Wandling) Date: Wed Apr 27 17:30:16 2005 Subject: [Mp4-tech] .cmp file conversion Message-ID: <12c555fa05042711431ccb945b@mail.gmail.com> I have a proprietary MPEG4 encoder that produces .cmp files. The output of the encoder is a "cmp" file. I have a proprietary decoder for these files and this encode/decode machinery is working correctly in the embedded platform space designed for these encoders and decoders. The question I have for the list is: I would like to be able to export the .cmp (encoded MPEG4 Video) file to a third party. What tools exist in the public domain that convert .cmp into _anything common_ that can be played with reasonably available public domain players (including WMP, RealPlayer, etc..). I found a MPEG4 video player at the IBM web site and it can play raw .cmp mpeg4 video, but it's not a common player platform. Thanks in advance. Please reply to me or the list. I'll summarize my results. Jeff Wandling From garysull windows.microsoft.com Wed Apr 27 12:54:34 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 27 17:30:23 2005 Subject: [Mp4-tech] [H.264][VIDEO]Byte Stream NAL unit decoding Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E48E136@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Gopi et al, Reply interspersed. It sounds like you need to study the standard more closely. +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of gopi +> krishnaiah +> Sent: Tuesday, April 26, 2024 9:34 PM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] [H.264][VIDEO]Byte Stream NAL unit decoding +> +> Dear All, +> +> Is it mandatory to have a start_code_prefix_on_3Bytes in the +> NAL byte stream? When the NAL unit stream is formatted as a byte stream, a start_code_prefix_on_3Bytes will be prefixed to every NAL unit. +> +> When we start decoding byte stream NAL unit, +> We first search for pattern 0x00 00 00 01. +> Next byte is extracted and discarded since it is zero_byte +> syntax element. Are you saying that you think that the first 0x00 00 00 01 in the bitstream should always be followed by a zero_byte? If that's what you're saying, it's wrong. +> Then the next 3 bytes should be start_code_prefix_on_3Bytes. I don't know what makes you think that. +> +> Using JM software and a test vector I observe following +> But what I observe is that I get pattern 0x00 00 00 01,then some byte +> patterns and then we get pattern 0x00 00 00 01 which marks end of +> stream. If you are decoding a proper stream, it probably contains MANY patterns equal to 0x00 00 00 01. And the last three bytes in the file should never be 0x00 00 00 01. Best regards, Gary Sullivan +> Is above interpreataion correct? +> +> Regards +> Gopi +> +> _______________________________________________ +> NOTE: Please use clear subject lines for your posts. Include +> [audio, [video], [systems], [general] or another +> apppropriate identifier to indicate the type of question you have. +> +> Note: Conduct on the mailing list is subject to the +> Antitrust guidelines found at +> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant +> itrust.php +> From garysull windows.microsoft.com Wed Apr 27 13:00:06 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Apr 27 17:30:29 2005 Subject: [Mp4-tech] finding JM software manual JVT-O017 Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E48E148@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Pankaj et al, You can find it at http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan. Best regards, Gary Sullivan ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of pankaj bansal Sent: Tuesday, April 26, 2024 9:29 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] finding JM software manual JVT-O017 Hi, can anyone tell me that JM software manual JVT-O017 is freely available or not? And how can i get this? Thanks pankaj __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/4dba917f/attachment.html From alexismt comcast.net Thu Apr 28 00:01:46 2005 From: alexismt comcast.net (Alexis Michael Tourapis) Date: Thu Apr 28 03:35:02 2005 Subject: [Mp4-tech] finding JM software manual JVT-O017 Message-ID: <042720052301.6511.427019D9000CC4800000196F22070016419B039C07980A040E@comcast.net> Dear Pankaj and Gary, Just to clarify, this document only specifies the usage of the reference software (i.e. how to compile and run the software, the meaning and how to adjust the configuration parameters etc). If you are more interested in reference code documentation you may check the doxygen generated documentation that could be found at this link: http://iphome.hhi.de/suehring/tml/doc/index.htm It might not be complete but I guess it may still be useful to some. Best regards, Alexis -------------- Original message -------------- Pankaj et al, You can find it at http://ftp3.itu.int/av-arch/jvt-site/2005_04_Busan. Best regards, Gary Sullivan From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of pankaj bansal Sent: Tuesday, April 26, 2024 9:29 PM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] finding JM software manual JVT-O017 Hi, can anyone tell me that JM software manual JVT-O017 is freely available or not? And how can i get this? Thanks pankaj __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/e01a5085/attachment.html From asic_soc 163.com Thu Apr 28 11:40:52 2005 From: asic_soc 163.com (Shen Sha) Date: Thu Apr 28 03:35:13 2005 Subject: [Mp4-tech] Re: finding JM software manual JVT-O017 Message-ID: <034a01c54b9b$b33c3a50$453210ac@TMT.COM> Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: JVT-O017.rar Type: application/octet-stream Size: 201073 bytes Desc: not available Url : /pipermail/mp4-tech/attachments/20050428/6dd5c8c0/JVT-O017-0001.obj From gripened gmail.com Thu Apr 28 15:08:55 2005 From: gripened gmail.com (Jayant Chauhan) Date: Thu Apr 28 03:35:21 2005 Subject: [Mp4-tech] [SYSTEM] SL Payload Message-ID: <5b996acb05042722084d12b539@mail.gmail.com> Hey fellas, A basic query regaring the specs. I want to design a USB based delivery of MPEG4 based media. The question: Where can I find the format of the SL payload (syncronization layer packets)? Is it done at the Delivery layer (by the DMIF instance) or at the Sync Layer?! SUrely at the Sync Layer right!!!! thanks Jayant From vanam_rahul yahoo.com Thu Apr 28 00:14:36 2005 From: vanam_rahul yahoo.com (Rahul Vanam) Date: Thu Apr 28 03:35:28 2005 Subject: [Mp4-tech] [audio] Subjective test audio sequences Message-ID: <20050428061436.7034.qmail@web52510.mail.yahoo.com> Hi, The Report on MPEG-4 Audio version 2 verification test (i.e. ISO/IEC JTC 1/SC 29/WG 11 N3075; website: http://www.tnt.uni-hannover.de/project/mpe...blic/w3075.pdf ) contains subjective test results for the MPEG-4 family of audio codecs. I wanted to know where I can obtain these audio sequences and whether they are available freely/for purchase? Regards, Rahul __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050427/eb2a1cad/attachment.html From sandipkr dgbmicro.com Thu Apr 28 14:07:11 2005 From: sandipkr dgbmicro.com (Sandip Ray) Date: Thu Apr 28 03:51:43 2005 Subject: [Mp4-tech] [video] YUV player source code Message-ID: Hi, Would you please tell me where can I get source code for displaying YUV 4:2:0 raw data(i.e. YUV player) in Linux ? Regards, Sandip -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050428/35e116ff/attachment.html From sandipkr dgbmicro.com Thu Apr 28 14:09:38 2005 From: sandipkr dgbmicro.com (Sandip Ray) Date: Thu Apr 28 03:51:50 2005 Subject: [Mp4-tech] Conversion Of H.264 stream to H.263 stream Message-ID: Dear Chiranjeevi, In a typical heterogeneous trancoding(i.e. conversion into a bitstream of different syntax elements), most of the parameters in the bitstream are mapped from one domain(e.g. H.264 Baseline) to another domain(e.g. H.263), in such a way that the final reconstructed video has acceptable PSNR and subjective quality. The mapping reduces the complexity of the transcoder. The parameters which can't be mapped from one domain to another domain, need to be decoded completely(or discarded if possible). H.264 uses CAVLC(Baseline) and CABAC(Main) as entropy coding tool which are quite different from much simpler VLC used in H.263. Hence variable length decoding of H.264 bitstream must happen before encoding further. H.264 uses 4x4 integer transform whereas H.263 uses 8x8 DCT for residual pixel values. I am not aware of any existing algorithm which can map between the two transform coefficients. Another issue lies in in-loop deblocking filter and multiple reference frames used in H.264. Deblocking filter modifies pixel values in all of the reference frames in H.264. Anyway the last two features can be disabled in H.264 encoder. In short, almost full decoding of H.264 bitstream is required in order get the residual pixel values. Then H.263 encoder can be cascaded to generate H.263 bitstream. Regards, Sandip -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050428/b1761ddf/attachment.html From cho8629 dreamwiz.com Thu Apr 28 18:19:59 2005 From: cho8629 dreamwiz.com (=?ks_c_5601-1987?B?wbbAzciv?=) Date: Thu Apr 28 04:30:41 2005 Subject: [Mp4-tech] where can I get yuv 4:4:4 sequence? Message-ID: <200504280820.j3S8K8Nw095660@smtp0.dreamwiz.com> To study 444 coding, I just modified YUVViewer to display 4:4:4 sequence. So I would like to test yuv 4:4:4 sequence. Where can I get the YUV 4:4:4 sequence? ___________________________________________________________________________ ??? (Ik-Hwan Cho) 402-751 ??? ?? ??3? ????? ????? ????? ???(2N575) 2N575, Multimedia Lab. Electronic Engineering, Inha University Yong Hyun 3 Dong, NamGu, Incheon, 402-751, South Korea E-mail : cho8629@dreamwiz.com MSN : cho8629@korea.com Tel : +82-32-860-7415 Mobile : +82-018-267-4535 __________________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050428/97e60927/attachment.html From tuukkat ee.oulu.fi Thu Apr 28 13:41:11 2005 From: tuukkat ee.oulu.fi (Tuukka Toivonen) Date: Thu Apr 28 08:26:13 2005 Subject: [Mp4-tech] [video] YUV player source code In-Reply-To: References: Message-ID: On Thu, 28 Apr 2005, Sandip Ray wrote: > Would you please tell me where can I get source code for displaying YUV > 4:2:0 raw data(i.e. YUV player) in Linux ? You can do it with mplayer, use command line like mplayer -rawvideo on:fps=25:w=352:h=288:format=i420 munchener_hall-352x288.yuv Use "." key to advance frame-by-frame. You may also want to use option "-vo x11" as it disables hardware scaling which may make it difficult to examine individual pixels. http://www.mplayerhq.hu From gbmallikarjunarao yahoo.com Thu Apr 28 11:48:04 2005 From: gbmallikarjunarao yahoo.com (mallikarjun rao) Date: Thu Apr 28 08:29:10 2005 Subject: [Mp4-tech] [Audio] [HE-AAC ] Message-ID: <20050428094804.63931.qmail@web52002.mail.yahoo.com> Hi experts, can anyone help me, conformance testing procedure of HE-AAC Decoder? The correspong information or related weblinks is very much helpful to me. please reply asap. Thanks Mallikarjun Send instant messages to your online friends http://uk.messenger.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050428/37ca3301/attachment.html From gripened gmail.com Thu Apr 28 19:55:50 2005 From: gripened gmail.com (Jayant Chauhan) Date: Thu Apr 28 08:30:22 2005 Subject: [Mp4-tech] [SYSTEM] DMB Message-ID: <5b996acb05042802556195a8ff@mail.gmail.com> Hey fellas I have a very crucial strange question. Suppose in the case of streaming, I get a video and audio stream from a broadcaster (lets say thru the MPEG2-TS ). Now using the TS-Demux I separate the audio and video streams. And now I decode the video stream using H.264 decoder. All this is happening on the fly, so now I encode it into MP4 using an encoder. So my question is: Question ) When my MPEG4 encoder encodes this stream which comes out of H.264 decoder, how do I SL packetize the encoded data out of the MP4vdecoder ?! Because I am not able to visualize it, as in, what is this data like, isnt it just an encoded frame or set of frames. Question) In this case, do I still have atoms (starting from MOOV , down to the STSD atom , from which I can get the SLConfigDescriptor from which I form my SLHeader for the SL packets ?!!! From gripened gmail.com Thu Apr 28 19:56:49 2005 From: gripened gmail.com (Jayant Chauhan) Date: Thu Apr 28 08:30:30 2005 Subject: [Mp4-tech] [SYSTEM] DMB and SL packetization Message-ID: <5b996acb0504280256608e5633@mail.gmail.com> Hey fellas I have a very crucial strange question. Suppose in the case of streaming, I get a video and audio stream from a broadcaster (lets say thru the MPEG2-TS ). Now using the TS-Demux I separate the audio and video streams. And now I decode the video stream using H.264 decoder. All this is happening on the fly, so now I encode it into MP4 using an encoder. So my question is: Question ) When my MPEG4 encoder encodes this stream which comes out of H.264 decoder, how do I SL packetize the encoded data out of the MP4vdecoder ?! Because I am not able to visualize it, as in, what is this data like, isnt it just an encoded frame or set of frames. Question) In this case, do I still have atoms (starting from MOOV , down to the STSD atom , from which I can get the SLConfigDescriptor from which I form my SLHeader for the SL packets ?!!! From Sastry_KRK Satyam.com Thu Apr 28 18:19:22 2005 From: Sastry_KRK Satyam.com (Sastry_KRK) Date: Thu Apr 28 08:30:37 2005 Subject: [Mp4-tech] YUV 4:2:0 file format Message-ID: <3D9FDCA910DD4445896A0BE5ECF009D40373AE39@bla.satyam.com> hello experts, could any one explain me the file format of raw YUV 4:2:0 data. how does row and column pixels are arranged. how to rearrange the File to 16 x 16 Macro blocks ************************************************************************** This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated. ************************************************************************** From garysull windows.microsoft.com Thu Apr 28 11:41:41 2005 From: garysull windows.microsoft.com (Gary Sullivan) Date: Thu Apr 28 17:40:58 2005 Subject: [Mp4-tech] Re: finding JM software manual JVT-O017 Message-ID: <91D7F2CEE3425A4A9D11311D09FCE2460E48EBEA@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> FYI: I think the password problem we had a few days ago has been fixed. Public access is available through http://ftp3.itu.int/av-arch/jvt-experts with no password. ________________________________ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Shen Sha Sent: Wednesday, April 27, 2024 7:41 PM To: pankaj0iit@yahoo.co.in Cc: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: finding JM software manual JVT-O017 Hi, Pankaj It's free but the ftp has some problem with password. So see my attachment. Ohm, It's a surprise for you. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050428/dec2410d/attachment.html From kichainrec rediffmail.com Fri Apr 29 04:42:02 2005 From: kichainrec rediffmail.com (Kumar) Date: Fri Apr 29 07:47:18 2005 Subject: [Mp4-tech] Redundant Pic Rejection in JM? (H.264 Decoder) Message-ID: <20050429034326.27542.qmail@webmail29.rediffmail.com> ? Hi I wanted to know whether Redundant coded picture rejection is implemented in the JM Decoder software. I see that the redundant_pic_cnt_present syntax is read from the bitstream, and based on that the redundant_pic_cnt is read from the Slice header, but I don't see any place this information is being used. Regards Kumar -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050429/424315c5/attachment.html From jiazhaox mobilesoft.com.cn Fri Apr 29 16:25:57 2005 From: jiazhaox mobilesoft.com.cn (JazryXu) Date: Fri Apr 29 07:47:25 2005 Subject: [Mp4-tech][video]3gpp file format References: <12c555fa05042711431ccb945b@mail.gmail.com> Message-ID: <005c01c54c8c$afaed450$7ca1a8c0@JazryXu> Hi expert : Who can give me a detail description about 3gpp file format, thanks. BRs! Jazry From Ye-Kui.Wang nokia.com Fri Apr 29 12:47:57 2005 From: Ye-Kui.Wang nokia.com (Ye-Kui.Wang@nokia.com) Date: Fri Apr 29 07:47:32 2005 Subject: [Mp4-tech] Re: finding JM software manual JVT-O017 Message-ID: <1C1F3D15859526459B4DD0A7A9B2268B072AD4@trebe101.NOE.Nokia.com> To be more accurate: http://ftp3.itu.ch/av-arch/jvt-site/. -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of ext Gary Sullivan Sent: 28 April, 2005 20:42 To: Shen Sha; pankaj0iit@yahoo.co.in Cc: mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Re: finding JM software manual JVT-O017 FYI: I think the password problem we had a few days ago has been fixed. Public access is available through http://ftp3.itu.int/av-arch/jvt-experts with no password. _____ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Shen Sha Sent: Wednesday, April 27, 2024 7:41 PM To: pankaj0iit@yahoo.co.in Cc: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: finding JM software manual JVT-O017 Hi, Pankaj It's free but the ftp has some problem with password. So see my attachment. Ohm, It's a surprise for you. Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050429/2dc70ddb/attachment.html From asic_soc 163.com Fri Apr 29 18:08:14 2005 From: asic_soc 163.com (Shen Sha) Date: Fri Apr 29 07:47:38 2005 Subject: [Mp4-tech] What is a Hypothetical Reference Decoder? Message-ID: <009c01c54c9a$fb5edd60$453210ac@TMT.COM> Hi all experts, Could you be kind enough to explain the idea "Hypothetical Reference Decoder" to me ? Is JM software decoder is a Hypothetical Reference Decoder? If not, can I add some code to convert it to a "Hypothetical Reference Decoder" ? Thanks a lot! Shen Sha -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050429/2e9da120/attachment.html From zaidee rndtm.net.my Fri Apr 29 20:15:24 2005 From: zaidee rndtm.net.my (Ahmad Zaidee bin Abu) Date: Fri Apr 29 07:47:45 2005 Subject: [Mp4-tech] YUV 4:2:0 file format Message-ID: <558E65614165F242AC17B5D316BFAB0F10561C@mstmrndmx01.tmrnd.net.my> Hello experts, I believe it would be YYYY..YUUUUU..UVVVV..V . With number of Y 4 times number of U and V. You need to know the height and width to read the data. Correct me if i'm wrong. TQ. _____________________________________ Ahmad Zaidee Abu Multimedia Communication Unit Telekom Research & Development UPM-MTDC Inc. Center One Serdang Tel: +603 89441862 Fax: +603 89441822 -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org on behalf of Sastry_KRK Sent: Thu 4/28/2005 7:49 PM To: 'mp4-tech@lists.mpegif.org' Subject: [Mp4-tech] YUV 4:2:0 file format hello experts, could any one explain me the file format of raw YUV 4:2:0 data. how does row and column pixels are arranged. how to rearrange the File to 16 x 16 Macro blocks ************************************************************************** This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated. ************************************************************************** _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php The information contained in this Internet message is confidential and intended only for the use of the individual or entity identified. If the reader of this message is not the intended recipient, any dissemination, distribution or copying of the information contained in this Internet message is strictly prohibited. If you received this message in error, please notify the sender immediately. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050429/49967cc8/attachment.html From cho8629 dreamwiz.com Sat Apr 30 00:13:11 2005 From: cho8629 dreamwiz.com (=?ks_c_5601-1987?B?wbbAzciv?=) Date: Mon May 2 08:40:17 2005 Subject: [Mp4-tech] YUV 4:2:0 file format In-Reply-To: <558E65614165F242AC17B5D316BFAB0F10561C@mstmrndmx01.tmrnd.net.my> Message-ID: <200504291413.j3TEDKlf089242@smtp0.dreamwiz.com> You can get detail information about YUV 420 format and others from following website. http://www.fourcc.org/ ___________________________________________________________________________ ??? (Ik-Hwan Cho) 402-751 ??? ?? ??3? ????? ????? ????? ???(2N575) 2N575, Multimedia Lab. Electronic Engineering, Inha University Yong Hyun 3 Dong, NamGu, Incheon, 402-751, South Korea E-mail : cho8629@dreamwiz.com MSN : cho8629@korea.com Tel : +82-32-860-7415 Mobile : +82-018-267-4535 __________________________________________________________________________ _____ From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech- bounces@lists.mpegif.org] On Behalf Of Ahmad Zaidee bin Abu Sent: Friday, April 29, 2024 8:15 PM To: Sastry_KRK; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] YUV 4:2:0 file format Hello experts, I believe it would be YYYY..YUUUUU..UVVVV..V . With number of Y 4 times number of U and V. You need to know the height and width to read the data. Correct me if i'm wrong. TQ. _____________________________________ Ahmad Zaidee Abu Multimedia Communication Unit Telekom Research & Development UPM-MTDC Inc. Center One Serdang Tel: +603 89441862 Fax: +603 89441822 -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org on behalf of Sastry_KRK Sent: Thu 4/28/2005 7:49 PM To: 'mp4-tech@lists.mpegif.org' Subject: [Mp4-tech] YUV 4:2:0 file format hello experts, could any one explain me the file format of raw YUV 4:2:0 data. how does row and column pixels are arranged. how to rearrange the File to 16 x 16 Macro blocks ************************************************************************** This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated. ************************************************************************** _______________________________________________ NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042- Antitrust.php The information contained in this Internet message is confidential and intended only for the use of the individual or entity identified. If the reader of this message is not the intended recipient, any dissemination, distribution or copying of the information contained in this Internet message is strictly prohibited. If you received this message in error, please notify the sender immediately. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050429/cdc78c2b/attachment.html From Ye-Kui.Wang nokia.com Fri Apr 29 21:21:31 2005 From: Ye-Kui.Wang nokia.com (Ye-Kui.Wang@nokia.com) Date: Mon May 2 08:40:23 2005 Subject: [Mp4-tech][video]3gpp file format Message-ID: <1C1F3D15859526459B4DD0A7A9B2268B072ADB@trebe101.NOE.Nokia.com> http://www.3gpp.org/ftp/Specs/html-info/26244.htm BR, YK > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of ext JazryXu > Sent: 29 April, 2005 10:26 > To: mp4-tech@lists.mpegif.org > Subject: Re: [Mp4-tech][video]3gpp file format > > > Hi expert : > Who can give me a detail description about 3gpp file format, thanks. > > BRs! > Jazry > > _______________________________________________ > NOTE: Please use clear subject lines for your posts. Include > [audio, [video], [systems], [general] or another apppropriate > identifier to indicate the type of question you have. > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php From dsn2603 rediffmail.com Sat Apr 30 12:35:37 2005 From: dsn2603 rediffmail.com (sakthi narayanan) Date: Mon May 2 08:40:31 2005 Subject: [Mp4-tech] AMR Speech Codec Message-ID: <20050430113659.16077.qmail@webmail17.rediffmail.com> Hi all, Why they are doing packing and unpacking in GSM AMR Speech Codec. Why they r adding headers in .INP file. With Regards, Sakthi? On Mon, 25 Apr 2024 Mohit Agarwal wrote : >Thanks Rajesh, > >What you have mentioned is the method of determining the compliancy of our decoder and >that is for static conformance,but >I am asking what is dynamic testing and how to implement it,as in conformance standard >2 type of testing are mentioned 1) static 2) dynamic (4.5.2 and 4.5.5 ) of standard. >If any pointers on dynamic testing... > >Regards >Mohit > > >RajeshMN@soc-soft.com wrote: > >>Hi, >> >>Write Test Scripts to Compare Bitwise the YUVs of the refernce generated >>and that of your Decoder for each of the test Bitstreams. >> >>With Best Wishes, >>Rajesh MN >> >>-----Original Message----- >> From: Mohit Agarwal [mailto:magarwal@neomagic.com] >> >>Sent: Thursday, April 21, 2024 1:38 PM >>To: mp4-tech@lists.mpegif.org >>Subject: [Mp4-tech] Mpeg4 Conformance Dynamic Testing >> >> >>Hi >>Can anybody let me know how to implement Dynamic Conformance Testing as >>mentioned in the conformance standard ISO/IEC 14496-4 as mentioned in >>4.5.2 and 4.5.5 of the standard. >> >>Best Regards >>Mohit. >>_______________________________________________ >>NOTE: Please use clear subject lines for your posts. Include [audio, >>[video], [systems], [general] or another apppropriate identifier to >>indicate the type of question you have. >> >>Note: Conduct on the mailing list is subject to the Antitrust guidelines >>found at >>http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php >> >>The information contained in this e-mail message and in any annexure is >>confidential to the recipient and may contain privileged information. If you are not >>the intended recipient, please notify the sender and delete the message along with >>any annexure. You should not disclose, copy or otherwise use the information contained >>in the message or any annexure. Any views expressed in this e-mail are those of the >>individual sender except where the sender specifically states them to be the views of >>SoCrates Software India Pvt Ltd., Bangalore. >> >>. >> >> > >_______________________________________________ >NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have. > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20050430/05af40d3/attachment.html From m.bojnordi ece.ut.ac.ir Sat Apr 30 17:36:07 2005 From: m.bojnordi ece.ut.ac.ir (m.bojnordi@ece.ut.ac.ir) Date: Mon May 2 08:40:39 2005 Subject: [Mp4-tech] Deblocking Filter Message-ID: <4383.192.168.117.106.1114862767.squirrel@192.168.117.106> Hi experts, >From the paper "Adaptive deblocking filter", alpha and betta parameter is calculated by alpha(x)=0.8(2^(x/6)-1) and betta(x)=0.5x-7, respectively. Could anybody tell me how these parameters are calculted? -- thanks in advance Mahdi From udhb5 umkc.edu Sat Apr 30 21:00:15 2005 From: udhb5 umkc.edu (Damodaran, Usha (UMKC-Student)) Date: Mon May 2 08:40:46 2005 Subject: [Mp4-tech] Size of first I frame Message-ID: <274F80A96CB7E848B604CB71F5821FFC2FBFD8@KC-MAIL6.kc.umkc.edu> Hi, I have a question regarding the size of the very first I frame in an MPEG4 clip. In three test clips I have seen - Akiyo_qcif, Foreman_qcif and Mobile_qcif - the first I frame is the largest (much larger than the subsequent I frames). Why is it so? Isn't it true that each I frame is independent of the others? So, my idea was that all the I frames should have approximately the same sizes or depending on the scene would vary a little, but here consistently the first I frame has the maximum size. Is there any additional information in the first I frame? Similarly the first P and B frames are the largest compared to the other P and B frames in the whole clip. Please let me know. I would really appreciate your replies. Thank you, Usha