From tsoligas teihal.gr Sun Feb 1 23:31:49 2004 From: tsoligas teihal.gr (nick) Date: Mon Feb 2 06:49:06 2004 Subject: [Mp4-tech] MPEG-4 CODE Message-ID: <401D7045.6000702@teihal.gr> HI ALL CAN ANYBODY DIRECT ME WHERE I CAN FIND MATLAB CODE(OR CSOURSE CODE)FOR MPEG-4 REGARDS NCK From collinpaul hotmail.com Mon Feb 2 15:09:10 2004 From: collinpaul hotmail.com (qwe qwe) Date: Mon Feb 2 06:51:15 2004 Subject: [Mp4-tech] ON PAL - NTSC conversion. Message-ID: The same has been discussed at http://forums.afterdawn.com/thread_view.cfm/9383 Hope this help you, Jefferson. It worked for me. Collin Paul Samsung India Software Operations, Bangalore-52 _________________________________________________________________ NRI’s, Free Money transfer to India. http://server1.msn.co.in/msnleads/citibankrca/citibankrca2.asp?type=hottag Click here. From nso01r ecs.soton.ac.uk Mon Feb 2 10:51:30 2004 From: nso01r ecs.soton.ac.uk (Noor Othman) Date: Mon Feb 2 06:54:47 2004 Subject: [Mp4-tech] isomp4 library Message-ID: <401E2BB2.4060403@ecs> Hi everyone, I wonder if anyone can help me with installing MPEG4 reference software (version 1 +2). It seems like it needs isomp4 library in order to install this reference software. I have downloaded system.zip, but could only find isomediafile library, and have no idea where can I get isomp4 from. Thank you so much. Noor From nilesh_hiray persistent.co.in Mon Feb 2 16:22:22 2004 From: nilesh_hiray persistent.co.in (Nilesh Hiray) Date: Mon Feb 2 06:57:18 2004 Subject: [Mp4-tech] YUV 4:2:0 Message-ID: <009001c3e97a$a4606ad0$6c01a8c0@persistent.co.in> Hi , I am not able to play YUV 4:2:0 files. Do i need some special hardware support to play them ? Let me know if i can download some 4:2:0 clips so that I am sure i am not using corrupt things Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040202/3bb40d36/attachment.html From ralph.sperschneider iis.fraunhofer.de Mon Feb 2 14:28:15 2004 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Mon Feb 2 10:50:21 2004 Subject: [Mp4-tech] Re: isomp4 library In-Reply-To: <401E2BB2.4060403@ecs> References: <401E2BB2.4060403@ecs> Message-ID: <401E506F.9010005@iis.fraunhofer.de> Noor Othman wrote: > Hi everyone, > > I wonder if anyone can help me with installing MPEG4 reference software > (version 1 +2). It seems like it needs isomp4 library in order to > install this reference software. I have downloaded system.zip, but could > only find isomediafile library, and have no idea where can I get isomp4 > from. Thank you so much. > > Noor > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 isomp4 library is an old name of isomediafile library. The name was changed once the library was extended to target not only mp4 content. Ralph -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 Fraunhofer-IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From chris.purdy exgate.tek.com Mon Feb 2 07:13:01 2004 From: chris.purdy exgate.tek.com (chris.purdy@exgate.tek.com) Date: Mon Feb 2 10:51:23 2004 Subject: [Mp4-tech] need to contact a poster regarding MPEG4 over MPEG 2 - can you he lp please? Message-ID: <7BFA089863712444A49996E9BBB790102D11E3@eu-hist-g03.hist.tek.com> Dear Sir, I am trying to contact a poster - Danilo Tromp from NOB multimedia regarding MPEG4 over MPEG 2 - can you help please? I want to exchange information, streams etc. The link to original post is as below:- His email bounces.(even with @ inserted) http://lists.mpegif.org/pipermail/discuss/2002-October/000455.html thanks Chris Chris Purdy Chris Purdy BSc CEng MIEE MPEG Applications Engineer mailto:chris.purdy@exgate.tek.com http://www.tektronix.com/Measurement/video_audio/ Endeavour House, Vision Park, Chivers Way, Histon Cambridge CB4 4ZR UK +44 1223 200700 voice SALES UK +44 1223 200701 fax SUPPORT The information in this email is confidential and is intended solely for the addressee. Access by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040202/79b0bc26/attachment.html From purnhage tnt.uni-hannover.de Tue Feb 3 01:25:31 2004 From: purnhage tnt.uni-hannover.de (Heiko Purnhagen) Date: Tue Feb 3 06:21:46 2004 Subject: [Mp4-tech] isomp4 library References: <401E2BB2.4060403@ecs> Message-ID: <401EEA7B.7ECF35CE@tnt.uni-hannover.de> Hi Noor, Noor Othman wrote: > > Hi everyone, > > I wonder if anyone can help me with installing MPEG4 reference > software (version 1 +2). It seems like it needs isomp4 library in order > to install this reference software. I have downloaded system.zip, but > could only find isomediafile library, and have no idea where can I get > isomp4 from. Thank you so much. > > Noor "isomp4" is simply the earlier name of what is now known as "isomediafile". To compile & link with this lib under its new name, simply change the corresponding lines in ISO_IEC_14496-5_2001_Software_Reference/audio/natural/refSoft/general/makefile.platform from ISOMP4_NAME = isomp4 # for newer versions of this lib # ISOMP4_NAME = isomediafile to #ISOMP4_NAME = isomp4 # for newer versions of this lib ISOMP4_NAME = isomediafile Hope this helps - and sorry for the inconveniences. Best regards Heiko _______________________________________________________________________ Heiko Purnhagen | Senior Research Engineer | Coding Technologies | phone: +46 (0)8 442 91 69 | D?belnsgatan 64 fax: +46 (0)8 33 09 88 | 113 52 Stockholm, Sweden hp at CodingTechnologies dot com | http://www.CodingTechnologies.com From dattaguru.b.n celstream.com Tue Feb 3 10:50:52 2004 From: dattaguru.b.n celstream.com (Dattaguru B.N) Date: Tue Feb 3 06:23:59 2004 Subject: [Mp4-tech] Re: isomp4 library Message-ID: <50EE5AD0AF6ED511833900B0D020C85802FAED8B@cel-bangt-m01> Hi, Can anybody help me in finding isomediafile library for linux platform. Thanks and regards, Dattaguru -----Original Message----- From: Ralph Sperschneider [mailto:ralph.sperschneider@iis.fraunhofer.de] Sent: Monday, February 02, 2024 6:58 PM To: Noor Othman Cc: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Re: isomp4 library Noor Othman wrote: > Hi everyone, > > I wonder if anyone can help me with installing MPEG4 reference software > (version 1 +2). It seems like it needs isomp4 library in order to > install this reference software. I have downloaded system.zip, but could > only find isomediafile library, and have no idea where can I get isomp4 > from. Thank you so much. > > Noor > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 isomp4 library is an old name of isomediafile library. The name was changed once the library was extended to target not only mp4 content. Ralph -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 Fraunhofer-IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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/20040203/9c41667a/attachment.html From kavitha_k_08 hotmail.com Tue Feb 3 08:55:23 2004 From: kavitha_k_08 hotmail.com (Kavitha Kanagaraj) Date: Tue Feb 3 06:26:20 2004 Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) Message-ID: hi i want to download the documents which are all refered in the white paper(H.264 / MPEG-4 Part 10 White Paper Variable-Length Coding). in that i've downloaded the document JVT Document JVT-C028, G.Bjontegaard and K. Lillevold, “Context-Adaptive VLC Coding of Coefficients”, Fairfax, VA, May 2002 from the site ftp://ftp.imtc-files.org/jvt-experts/ i want to download JVT Document JVT-L13, D. Marpe, G. Blattermann and T. Wiegand, “Adaptive Codes for H.26L”, Eibsee, January 2001 do u suggest me where i can get that document. if they reply is to this mail id is highly perferable thanks in advance kavitha _________________________________________________________________ Easiest Money Transfer to India . Send Money To 6000 Indian Towns. http://go.msnserver.com/IN/42198.asp Easiest Way To Send Money Home! From kavitha_k_08 hotmail.com Tue Feb 3 09:08:40 2004 From: kavitha_k_08 hotmail.com (Kavitha Kanagaraj) Date: Tue Feb 3 06:29:46 2004 Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) Message-ID: hi Richardson, i've read your white paper regarding CAVLC(H.264 / MPEG-4 Part 10 White Paper Variable-Length Coding),i understood how to proceed with CAVLC,but i couldnt able to find the reference documents. 1. JVT Document JVT-L13, D. Marpe, G. Blattermann and T. Wiegand, “Adaptive Codes for H.26L”, Eibsee, January 2001 2. ITU-T Rec. H.264 / ISO/IEC 11496-10, “Advanced Video Coding”, Final Committee Draft, Document JVT- E022, September 2002 and i've few more questions also, i've read in few documents that in H.264 baseline profile CAVLC is the entropy techinique used, is that alone is needed or anything like UVLC are needed. if so CAVLC is enough the method which is explained in white paper is done for all motion vectors,transform coefficients(including both luma & chroma),quantization parameter. and i've little confusion in computing run_before in decoding part. i'll be very much thankfull if u explain me all these. if the reply is to this mail id means it'll be helpfull for me. i dont know where to check for replies. thanks in advance kavitha _________________________________________________________________ Gifts for Him & Her. Valentine’s Day. http://go.msnserver.com/IN/42197.asp At MSN Shopping. From harsha genesis-microchip.com Tue Feb 3 17:22:48 2004 From: harsha genesis-microchip.com (Harsha Viswanath) Date: Tue Feb 3 08:22:17 2004 Subject: [Mp4-tech] AVC/H264 Source code Message-ID: Hello, Can anybody point me to the place where I can get source code for H264/AVC codec? Thanks, -Harsha ************************************************** Harsha Viswanath Ph.D. Sage design Systems (Subsidiary of Genesis Microchip) Tel. 91-80-526 3878; Fax 91-80-529 6245 Email: harsha@genesis-microchip.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040203/d8df4fda/attachment.html From purnhage tnt.uni-hannover.de Tue Feb 3 13:43:22 2004 From: purnhage tnt.uni-hannover.de (Heiko Purnhagen) Date: Tue Feb 3 08:23:04 2004 Subject: [Mp4-tech] Re: isomp4 library References: <50EE5AD0AF6ED511833900B0D020C85802FAED8B@cel-bangt-m01> Message-ID: <401F976A.2723EE6B@tnt.uni-hannover.de> Hi, "Dattaguru B.N" wrote: > > Hi, > > Can anybody help me in finding isomediafile library for linux > platform. The source code of libisomedia can e.g. be found in http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_14496-5_2001_Software_Reference/systems.zip available for download from ISO. Best regards Heiko > > Thanks and regards, > Dattaguru > > -----Original Message----- > From: Ralph Sperschneider > [mailto:ralph.sperschneider@iis.fraunhofer.de] > Sent: Monday, February 02, 2024 6:58 PM > To: Noor Othman > Cc: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] Re: isomp4 library > > Noor Othman wrote: > > Hi everyone, > > > > I wonder if anyone can help me with installing MPEG4 reference > software > > (version 1 +2). It seems like it needs isomp4 library in order to > > install this reference software. I have downloaded system.zip, but > could > > only find isomediafile library, and have no idea where can I get > isomp4 > > from. Thank you so much. > > > > Noor > > > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > 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 > > isomp4 library is an old name of isomediafile library. The name was > changed once > the library was extended to target not only mp4 content. > > Ralph > -- > Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 > Fraunhofer-IIS | Fax: +49 9131 776 398 > Am Wolfsmantel 33 | > mailto:ralph.sperschneider@iis.fraunhofer.de > D 91058 Erlangen | http://www.iis.fhg.de/amm/ From rob.koenen mpegif.org Tue Feb 3 14:27:37 2004 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Tue Feb 3 19:28:20 2004 Subject: [Mp4-tech] AVC/H264 Source code In-Reply-To: Message-ID: <000a01c3ea59$7dd36220$0000fea9@corp.intertrust.com> Please see http://www.m4if.org/resources.php under "Obtaining the Standard" Rob -----Original Message----- From: Harsha Viswanath [mailto:harsha@genesis-microchip.com] Sent: Tuesday, 3 February 2024 12:53 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] AVC/H264 Source code Hello, Can anybody point me to the place where I can get source code for H264/AVC codec? Thanks, -Harsha ************************************************** Harsha Viswanath Ph.D. Sage design Systems (Subsidiary of Genesis Microchip) Tel. 91-80-526 3878; Fax 91-80-529 6245 Email: harsha@genesis-microchip.com -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040203/1b33472b/attachment.html From stefan.goor ucd.ie Tue Feb 3 13:49:09 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Tue Feb 3 19:29:10 2004 Subject: [Mp4-tech] VOP Start Codes and MPEG-4 over RTP Message-ID: Hey All, I'm hoping the answer to this question is going to be very simple. I am working with MPEG-4 and RTSP so that the content is sent over RTP but the client I am developing needs to know when the start new VOP is received. I used the MPEG4IP tools to create a hint track for the content so it can be streamed from the Darwin Streaming Server. >From the Standard ISO/IEC 14496-2:2001, I see that the start code for VOPs is 1b6. Also having looked at the RFC for RTP, it says the Marker Bit/Flag should indicate a significant event such as the start of a new frame. Therefore, I assume that these 2 indicators should coincide. So I looked at a number of packets that arrived, and in general this was true, but not always. Here is a sample sequence recorded from an RTP Stream: Pack No: Marker Bit Set: Start of Payload: 1 false 100 2 false 1b6 3 false 8e2962c9 4 false c4582f15 5 true 1e1ef6ad //Note that here the Marker Bit is set but the start code is absent 6 true 1b6 7 true 1b6 8 true 1b6 9 true 1b6 . . . . . . . . . So, I am interested to know if anyone can tell me what the Marker Bit being set but the startcode being absent means? Also, on a similar note, I am a bit confused regarding the start code for the very beginning of a video bitstream. On page 30 of ISO/IEC 14496-2:2001 it says that all start codes should be prefixed by a twenty three bit code of all 0s except the last bit which is 1. I have not seen this anywhere in any of the m4v files I have, including some of the conformance bitstreams. Is this used at all? Finally, what is the code or pattern that should be at the start of every bitstream. Thanks, Stefan From ssingh neomagic.com Tue Feb 3 19:48:16 2004 From: ssingh neomagic.com (Shailendra Singh) Date: Tue Feb 3 19:29:55 2004 Subject: [Mp4-tech] Video test bitstreams for MPEG-4 Simple Profile In-Reply-To: <200402021701.i12H0Ye4020383@lists1.magma.ca> References: <200402021701.i12H0Ye4020383@lists1.magma.ca> Message-ID: <401FADA8.7030802@neomagic.com> Hi All, I am looking for all the relevant video test bitstreams for MPEG-4 Simple Profile. I am referring to the document "Part 4: Conformance testing" (ISO/IEC 14496-4:2000(E) ). This document mentions availability of a Normative Test Suite (Section 4.5.7) as well Bitstreams Donated by MPEG-4 Platform Verification Bitstream Development Project (Section 4.5.8). I looked at http://www.m4if.org/resources.php which in turn points to ftp://ftp.tnt.uni-hannover.de/pub/MPEG/video/conformance/ for MPEG-4 Video Conformance Bitstreams. But if follow this link, I see 2 folders, "version 1" and "version 2". The folder "version 2" seems to be more recent but seems to be missing quite a few bitstreams as listed out in Section 4.5.7. Also, I have not able to find out where the bitstreams Donated by MPEG-4 Platform Verification Bitstream Development Project are located. One earlier posting (http://lists.mpegif.org/pipermail/mp4-tech/2002-August/001114.html) mentions a way to find these bitstreams but I don't think it works any more. Any pointers will be really appreciated. Regards, Shailendra From alexandros.tourapis thomson.net Tue Feb 3 10:21:56 2004 From: alexandros.tourapis thomson.net (Tourapis Alexandros) Date: Tue Feb 3 19:30:36 2004 Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) Message-ID: <8FC831532CEE564AB88AC1D999C29DEB037EF7@prinsmail01.am.thmulti.com> The document you are referring to is an old VCEG document and can be found here : http://ftp3.itu.int/av-arch/video-site/0101_Eib/ Document is named VCEG-L13. H.264 uses two different entropy methods, CAVLC (which still uses the same VLC tables as UVLC but introduces context adaptivity) and the more efficient CABAC which uses arithmetic coding instead of VLC coding. Reference software can be downloaded from : http://bs.hhi.de/~suehring/tml/ Regards, Alexis -----Original Message----- From: Kavitha Kanagaraj [mailto:kavitha_k_08@hotmail.com] Sent: Tuesday, February 03, 2024 3:55 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) hi i want to download the documents which are all refered in the white paper(H.264 / MPEG-4 Part 10 White Paper Variable-Length Coding). in that i've downloaded the document JVT Document JVT-C028, G.Bjontegaard and K. Lillevold, "Context-Adaptive VLC Coding of Coefficients", Fairfax, VA, May 2002 from the site ftp://ftp.imtc-files.org/jvt-experts/ i want to download JVT Document JVT-L13, D. Marpe, G. Blattermann and T. Wiegand, "Adaptive Codes for H.26L", Eibsee, January 2001 do u suggest me where i can get that document. if they reply is to this mail id is highly perferable thanks in advance kavitha _________________________________________________________________ Easiest Money Transfer to India . Send Money To 6000 Indian Towns. http://go.msnserver.com/IN/42198.asp Easiest Way To Send Money Home! _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 stefan.goor ucd.ie Tue Feb 3 15:12:17 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Tue Feb 3 19:32:31 2004 Subject: [Mp4-tech] Determine type of VOP contained in a RTP Packet Message-ID: Hey All, Just wondering how do determine whether an MP4-ES/RTP packet contains an I, P or B VOP? If I have the 1b6 code at the start of the payload indicating the start of the VOP, is there some subsequence code I can parse out to determine this (similar to mpeg-2)? Thanks, Stefan From i.g.richardson rgu.ac.uk Tue Feb 3 16:58:28 2004 From: i.g.richardson rgu.ac.uk (i.g.richardson@rgu.ac.uk) Date: Tue Feb 3 19:34:29 2004 Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) Message-ID: <80A9EC5F99C0744896728B5579E36D364E43A7@EXVS001.rgu.ac.uk> The documents are available at ftp.imtc-files.org/jvt-experts/ The baseline profile uses fixed-length codes, Exp-Golomb codes (I think this is what you mean by UVLC) and CAVLC. You should look at the standard for the definitive description of these. Iain Richardson www.vcodex.com -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Kavitha Kanagaraj Sent: 03 February 2024 09:09 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] the CAVLC code design in MPEG4 (part10) hi Richardson, i've read your white paper regarding CAVLC(H.264 / MPEG-4 Part 10 White Paper Variable-Length Coding),i understood how to proceed with CAVLC,but i couldnt able to find the reference documents. 1. JVT Document JVT-L13, D. Marpe, G. Blattermann and T. Wiegand, “Adaptive Codes for H.26L”, Eibsee, January 2001 2. ITU-T Rec. H.264 / ISO/IEC 11496-10, “Advanced Video Coding”, Final Committee Draft, Document JVT- E022, September 2002 and i've few more questions also, i've read in few documents that in H.264 baseline profile CAVLC is the entropy techinique used, is that alone is needed or anything like UVLC are needed. if so CAVLC is enough the method which is explained in white paper is done for all motion vectors,transform coefficients(including both luma & chroma),quantization parameter. and i've little confusion in computing run_before in decoding part. i'll be very much thankfull if u explain me all these. if the reply is to this mail id means it'll be helpfull for me. i dont know where to check for replies. thanks in advance kavitha _________________________________________________________________ Gifts for Him & Her. Valentine’s Day. http://go.msnserver.com/IN/42197.asp At MSN Shopping. _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.571 / Virus Database: 361 - Release Date: 26/01/2024 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.571 / Virus Database: 361 - Release Date: 26/01/2024 From singer apple.com Tue Feb 3 10:20:58 2004 From: singer apple.com (Dave Singer) Date: Tue Feb 3 19:36:58 2004 Subject: [Mp4-tech] isomp4 library In-Reply-To: <401E2BB2.4060403@ecs> References: <401E2BB2.4060403@ecs> Message-ID: At 10:51 AM +0000 2/2/04, Noor Othman wrote: >Hi everyone, > > I wonder if anyone can help me with installing MPEG4 reference >software (version 1 +2). It seems like it needs isomp4 library in >order to install this reference software. I have downloaded >system.zip, but could only find isomediafile library, and have no >idea where can I get isomp4 from. Thank you so much. I think isomp4 is a very old name for isomediafile. > >Noor > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 singer apple.com Tue Feb 3 10:23:32 2004 From: singer apple.com (Dave Singer) Date: Tue Feb 3 19:38:06 2004 Subject: [Mp4-tech] Re: isomp4 library In-Reply-To: <50EE5AD0AF6ED511833900B0D020C85802FAED8B@cel-bangt-m01> References: <50EE5AD0AF6ED511833900B0D020C85802FAED8B@cel-bangt-m01> Message-ID: At 10:50 AM +0530 2/3/04, Dattaguru B.N wrote: >Hi, > >Can anybody help me in finding isomediafile library for linux platform. if you have the sources, then you'll find makefiles for many platforms including Linux are included. > >Thanks and regards, >Dattaguru > >-----Original Message----- >From: Ralph Sperschneider >[mailto:ralph.sperschneider@iis.fraunhofer.de] >Sent: Monday, February 02, 2024 6:58 PM >To: Noor Othman >Cc: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] Re: isomp4 library > > >Noor Othman wrote: >> Hi everyone, >> >> I wonder if anyone can help me with installing MPEG4 reference software >> (version 1 +2). It seems like it needs isomp4 library in order to >> install this reference software. I have downloaded system.zip, but could >> only find isomediafile library, and have no idea where can I get isomp4 >> from. Thank you so much. >> >> Noor >> >> _______________________________________________ >> Mp4-tech mailing list >> Mp4-tech@lists.mpegif.org >> >>http://lists.mpegif.org/mailman/listinfo/mp4-tech >> >> 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 > >isomp4 library is an old name of isomediafile library. The name was >changed once >the library was extended to target not only mp4 content. > >Ralph >-- >Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 >Fraunhofer-IIS | Fax: +49 9131 776 398 >Am Wolfsmantel 33 | >mailto:ralph.sperschneider@iis.fraunhofer.de >D 91058 Erlangen | >http://www.iis.fhg.de/amm/ > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 > > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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/20040203/03badf6b/attachment-0001.html From tihohod mail.ru Wed Feb 4 03:11:49 2004 From: tihohod mail.ru (mail.ru) Date: Tue Feb 3 19:38:46 2004 Subject: [Mp4-tech] YUV 4:2:0 Message-ID: <743585585.20040204031149@mail.ru> Hello mp4-tech, You may try to use my program to play your clips. It plays YUV420 files and does not require any special hardware for the playing. I have written this player for my personal needs, but I suspect that it is the best YUV player for the Windows platform. And it's free of course. http://tihohod.chat.ru/yuvdeluxe057.exe -- Best regards, mail.ru mailto:tihohod@mail.ru From dattaguru.b.n celstream.com Wed Feb 4 10:05:24 2004 From: dattaguru.b.n celstream.com (Dattaguru B.N) Date: Wed Feb 4 03:31:17 2004 Subject: [Mp4-tech] Re: isomp4 library Message-ID: <50EE5AD0AF6ED511833900B0D020C85802FAED95@cel-bangt-m01> Hi, Thanks for the help. Rgds Datta -----Original Message----- From: Heiko Purnhagen [mailto:purnhage@tnt.uni-hannover.de] Sent: Tuesday, February 03, 2024 6:13 PM To: Dattaguru B.N Cc: 'Ralph Sperschneider'; Noor Othman; mp4-tech@lists.mpegif.org Subject: Re: [Mp4-tech] Re: isomp4 library Hi, "Dattaguru B.N" wrote: > > Hi, > > Can anybody help me in finding isomediafile library for linux > platform. The source code of libisomedia can e.g. be found in http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_14496-5_200 1_Software_Reference/systems.zip available for download from ISO. Best regards Heiko > > Thanks and regards, > Dattaguru > > -----Original Message----- > From: Ralph Sperschneider > [mailto:ralph.sperschneider@iis.fraunhofer.de] > Sent: Monday, February 02, 2024 6:58 PM > To: Noor Othman > Cc: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] Re: isomp4 library > > Noor Othman wrote: > > Hi everyone, > > > > I wonder if anyone can help me with installing MPEG4 reference > software > > (version 1 +2). It seems like it needs isomp4 library in order to > > install this reference software. I have downloaded system.zip, but > could > > only find isomediafile library, and have no idea where can I get > isomp4 > > from. Thank you so much. > > > > Noor > > > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > 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 > > isomp4 library is an old name of isomediafile library. The name was > changed once > the library was extended to target not only mp4 content. > > Ralph > -- > Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 > Fraunhofer-IIS | Fax: +49 9131 776 398 > Am Wolfsmantel 33 | > mailto:ralph.sperschneider@iis.fraunhofer.de > D 91058 Erlangen | http://www.iis.fhg.de/amm/ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040204/226c5d6d/attachment.html From RaviprakashN KPITCummins.com Wed Feb 4 13:26:39 2004 From: RaviprakashN KPITCummins.com (Raviprakash Nayak) Date: Wed Feb 4 03:32:10 2004 Subject: [Mp4-tech] Video Docs Message-ID: <69595093233BB547BB70CF5E492B63F203DA18D8@sohm.kpit.com> Hi, Where can I get the documents related to Video codecs for MPEG 4? I found for the Audio form http://www.m4if.org/resources.php with ftp://ftp.tnt.uni-hannover.de/pub/MPEG/audio/ as Audio site. But for the Video there are no doc provide, Please can any one tell me the location. Regards, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040204/67e6436e/attachment.html From tma iis.fhg.de Wed Feb 4 10:41:08 2004 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Feb 4 15:13:22 2004 Subject: [Mp4-tech] Determine type of VOP contained in a RTP Packet References: Message-ID: <4020BE34.DBCE4855@iis.fhg.de> "Stefan A. Goor" schrieb: > > Hey All, > Just wondering how do determine whether an MP4-ES/RTP packet contains an I, > P or B VOP? If I have the 1b6 code at the start of the payload indicating > the start of the VOP, is there some subsequence code I can parse out to > determine this (similar to mpeg-2)? The first 2 bits after the start code indicate the vop_coding_type 00: I 01: P 10: B 11: S Regards, Herbert. > Thanks, > Stefan > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 FhG-IIS A, Studio Department 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 s.voukelatos indigovision.com Wed Feb 4 09:46:35 2004 From: s.voukelatos indigovision.com (Stathis Voukelatos) Date: Wed Feb 4 15:14:20 2004 Subject: [Mp4-tech] Determine type of VOP contained in a RTP Packet Message-ID: <67336BF4D5D23C4AA30EC72DFCFCA6DF9AF184@peebles.indigovision.com> Hi Stefan, The next two bits after the VOP start code indicate the prediction type for the VOP: 00 --> I-VOP 01 --> P-VOP 10 --> B-VOP 11 --> Sprite Regards, Stathis Stathis Voukelatos, PhD Software Engineer IndigoVision Ltd The Edinburgh Technopole Bush Loan, Edinburgh Scotland, UK EH26 0PJ +44 (0)131 4757345 +44 (0)131 4757201 (Fax) http://www.indigovision.com > -----Original Message----- > From: Stefan A. Goor [mailto:stefan.goor@ucd.ie] > Sent: Tuesday, February 03, 2024 3:12 PM > To: Mp4-Tech > Subject: [Mp4-tech] Determine type of VOP contained in a RTP Packet > > > Hey All, > Just wondering how do determine whether an MP4-ES/RTP packet > contains an I, > P or B VOP? If I have the 1b6 code at the start of the > payload indicating > the start of the VOP, is there some subsequence code I can > parse out to > determine this (similar to mpeg-2)? > Thanks, > Stefan > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 pbruce cove-nt.com Wed Feb 4 11:00:33 2004 From: pbruce cove-nt.com (Phillip Bruce) Date: Wed Feb 4 15:15:17 2004 Subject: [Mp4-tech] VOP Start Codes and MPEG-4 over RTP In-Reply-To: Message-ID: hello and good day, I think you've got your marker information all wrong. RFC 3016 calls for setting the marker bit in the last packet of a VOP. Here's what we get from a visual stream broadcast by MPEG4IP: datagram from=192.168.0.200:41700 to=192.168.0.13:23984 1075891295.083499 RTP len=1472 v=2 p=0 x=0 cc=0 m=0 pt=96 (????,0,0) seq=32657 ts=118282040 ssrc=0x121131d3 data=000001b6 datagram from=192.168.0.200:41700 to=192.168.0.13:23984 1075891295.083649 RTP len=1472 v=2 p=0 x=0 cc=0 m=0 pt=96 (????,0,0) seq=32658 ts=118282040 ssrc=0x121131d3 data=cbd5b510 datagram from=192.168.0.200:41700 to=192.168.0.13:23984 1075891295.083685 RTP len=492 v=2 p=0 x=0 cc=0 m=1 pt=96 (????,0,0) seq=32659 ts=118282040 ssrc=0x121131d3 data=3d4d8776 datagram from=192.168.0.200:41700 to=192.168.0.13:23984 1075891295.163390 RTP len=338 v=2 p=0 x=0 cc=0 m=1 pt=96 (????,0,0) seq=32660 ts=118289540 ssrc=0x121131d3 data=000001b6 Here, seq #32657-32659 correspond to a single VOP (m=0, m=0, m=1), #32660 also (m=1). The first 4 octets of the payload data in these sample pakcets also conform to the standard. You apparently are also forgetting that a single RTP packet MAY contain several VOPs. sincerely, dI77IHd On Tue, 3 Feb 2004, Stefan A. Goor wrote: > Hey All, > I'm hoping the answer to this question is going to be very simple. > I am working with MPEG-4 and RTSP so that the content is sent over RTP but > the client I am developing needs to know when the start new VOP is received. From blackbirduw hotmail.com Wed Feb 4 11:31:29 2004 From: blackbirduw hotmail.com (Bird Black) Date: Wed Feb 4 15:17:31 2004 Subject: [Mp4-tech] codec supporting FGS Message-ID: Hi, Just wondering if there is a codec software supporting FGS. Thanks a lot for any information about it. Best regards, Hai _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=dept/bcomm&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca From RaviprakashN KPITCummins.com Thu Feb 5 11:14:45 2004 From: RaviprakashN KPITCummins.com (Raviprakash Nayak) Date: Thu Feb 5 09:40:41 2004 Subject: [Mp4-tech] Video Download Message-ID: <69595093233BB547BB70CF5E492B63F203E46F6C@sohm.kpit.com> Hi, Where Do I can get the standards on MPEG 4 video? Regard, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040205/1f8b3a17/attachment.html From mayurkosmic yahoo.com Thu Feb 5 01:01:39 2004 From: mayurkosmic yahoo.com (gosavi mayur) Date: Thu Feb 5 10:02:52 2004 Subject: [Mp4-tech] JM75c guidlines and testing sequence Message-ID: <20040205090139.45196.qmail@web61007.mail.yahoo.com> hallo, x-perts it is very 1st letter frm me and it is very crucial 4 me frm my research point of view.comin to the basic prob startin off my request 1. what is the basic testing sequence for the codex as it is very new to start the xploration 2.the jm75c does not support clip consistin higher number of frames (shows unxpected error and EOF msg) 3.is it buggy or does it contain some limlitation . 4.expects references from u all out there. Thanx 4 havin it in front of ur (.)eyes Mayur. --------------------------------- Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040205/d8a7094a/attachment.html From mayurkosmic hotmail.com Thu Feb 5 14:38:23 2004 From: mayurkosmic hotmail.com (mayur gosavi) Date: Thu Feb 5 10:06:31 2004 Subject: [Mp4-tech] testing clips of uncompressed "leena.avi" Message-ID: i m desperately i need of clip called leena.avi having uncompressed avi property and also the jm75c suportin characteristics it would b kind of any on ehavin it. _________________________________________________________________ MSN Hotmail now on your Mobile phone. http://server1.msn.co.in/sp03/mobilesms/ Click here. From rob.koenen mpegif.org Thu Feb 5 16:11:33 2004 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Fri Feb 6 09:04:47 2004 Subject: [Mp4-tech] Video Download In-Reply-To: <69595093233BB547BB70CF5E492B63F203E46F6C@sohm.kpit.com> Message-ID: <000901c3ebfa$5735a270$0000fea9@corp.intertrust.com> See www.m4if.org/resources.php for pointers. Best, Rob -----Original Message----- From: Raviprakash Nayak [mailto:RaviprakashN@kpitcummins.com] Sent: Thursday, 5 February 2024 06:45 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Video Download Hi, Where Do I can get the standards on MPEG 4 video? Regard, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040205/a67e03d0/attachment.html From michael.ditze c-lab.de Thu Feb 5 14:33:34 2004 From: michael.ditze c-lab.de (Michael Ditze) Date: Fri Feb 6 09:05:40 2004 Subject: [Mp4-tech] MPEG-4 Traffic Simulator Message-ID: <006e01c3ebec$a7775250$a751ea83@clab.de> Hey all, I am looking for a MPEG-4 trafic simulator for the NS-2 network simulator. Can anyone give me some hints where to find one? Further, how can I find out about typical VOP packet sizes? I basically would like to know how I-VOPs behave in comparison to P-VOPs and B-VOPs in terms of size? It would also be very helpful if someone would have such data for real MPEG-4 streams. Is there any possibility to obtain this data from MPEG-4 streams? I have basically developed some network scheduling approaches for transmitting MPEG-4 Elementary Streams over 802.11e, and now I need some real data for evaluation purposes. Any help would be greatly appreciated! Regards, Michael Michael Ditze C-LAB, 33094 Paderborn, Germany F?rstenallee 11, Office FU 304 Voice: +49-5251-60-6124, Fax: +49-5251-60-6065 Email: mailto:michael.ditze@c-lab.de From ralph.sperschneider iis.fraunhofer.de Thu Feb 5 18:10:43 2004 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Fri Feb 6 09:06:19 2004 Subject: [Mp4-tech] Re: Regaring PNS in MPEG4 AAC In-Reply-To: References: Message-ID: <40227913.8040104@iis.fraunhofer.de> Mody, Mihir wrote: > Hi, > > I have couple of queries on PNS module in AAC. > > 1) > According to AAC standard, noise energy (nrg) is calculated as follows. > nrg = global_gain - NOISE_OFFSET - 256. > Does anybody know significance of 256? Does encoder have to to add 256 > in nrg? In that case, can we define NOISE_OFFSET = 90 + 256 = 346? dpcm_noise_nrg[g][sfb], which is the first differentially coded noise_nrg value, is transmitted as 9 bit uimsbf, i. e. it has the domain [0,511]. By reducing the start value by 256 you move that domain to [-256; 255]. > 2) > According to AAC standard, the quantization of noise_energy during PNS > is done with resolution of 1.5 db. Does it mean following line is valid? > > quantized_noise_energy = (INT) (log2 (noise_energy)) A factor of two seems to be missing, since for the energy the following is true: log2(nrg) -> 3dB 2*log2(nrg) -> 1.5dB > Regards, > Mihir Best regards, Ralph -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 Fraunhofer-IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From babyreeja USHUSTECH.COM Fri Feb 6 08:33:04 2004 From: babyreeja USHUSTECH.COM (Baby Reeja Jayan) Date: Fri Feb 6 09:07:42 2004 Subject: [Mp4-tech] Video Download Message-ID: <79DD1BC58DD7AC418EC0D1D5B169ACB8B9C669@mail.ushustech.com> Hi Try the Resources pages of www.m4if.org (under Obtaining the Standard) Reeja -----Original Message----- From: Raviprakash Nayak [mailto:RaviprakashN@KPITCummins.com] Sent: Thursday, February 05, 2024 11:15 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Video Download Hi, Where Do I can get the standards on MPEG 4 video? Regard, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040206/e07fbd56/attachment.html From anmol_trivedi myrealbox.com Fri Feb 6 12:00:50 2004 From: anmol_trivedi myrealbox.com (Amit Trivedi) Date: Fri Feb 6 09:08:47 2004 Subject: [Mp4-tech] H.264 error" Unexpected EOF" Message-ID: <1076049050.c842ebe0anmol_trivedi@myrealbox.com> hi friends, i'm stuck in the reference software JM75c. i'm getting the error " ReadOneFrame: cannot read 25344 bytes from input file, unexpected EOF?, exiting" in each sample file i use.... can anyone please show me the way out? Thanks, Regards Amit Trivedi Parsing Configfile encoder.cfg................................................................................... -------------------------------------------------------------------------- Input YUV file : foreman.yuv Output H.26L bitstream : test.264 Output YUV file : test_rec.yuv Output log file : log.dat Output statistics file : stat.dat -------------------------------------------------------------------------- Frame Bit/pic QP SnrY SnrU SnrV Time(ms) Frm/Fld IntraMBs 0(I) 20976 28 37.4426 41.1685 43.0078 4230 FRM 2(P) 8080 28 36.6988 40.8060 42.3650 6320 FRM 16 1(B) 2416 30 35.9361 41.1444 42.8157 10430 FRM 4(P) 4672 28 37.1153 41.2547 42.9935 8240 FRM 1 3(B) 488 30 37.5001 41.1660 43.0027 12300 FRM ReadOneFrame: cannot read 25344 bytes from input file, unexpected EOF?, exiting-------------------------------------------------------------------------- Total Frames: 5 (2) Leaky BucketRateFile does not have valid entries; using rate calculated from avg. rate Number Leaky Buckets: 8 Rmin Bmin Fmin 36630 21730 21730 45785 20976 20976 54940 20976 20976 64095 20976 20976 73250 20976 20976 82405 20976 20976 91560 20976 20976 100715 20976 20976 -------------------------------------------------------------------------- Freq. for encoded bitstream : 5 Hadamard transform : Used Image format : 176x144 Error robustness : Off Search range : 16 No of ref. frames used in P pred : 5 No of ref. frames used in B pred : 5 Total encoding time for the seq. : 41.520 sec Sequence type : IBPBP (QP: I 28, P 28, B 30) Entropy coding method : CABAC Search range restrictions : none RD-optimized mode decision : used Data Partitioning Mode : 1 partition Output File Format : H.26L Bit Stream File Format ------------------ Average data all frames ------------------------------ SNR Y(dB) : 36.94 SNR U(dB) : 41.11 SNR V(dB) : 42.84 Total bits : 36632 (I 20976, P 12752, B 2904) Bit rate (kbit/s) @ 10.00 Hz : 91.58 Bits to avoid Startcode Emulation : 0 Bits for parameter sets : 168 -------------------------------------------------------------------------- Exit JM 7 encoder ver 7.5c From zwj richnet-tech.com Fri Feb 6 00:29:22 2004 From: zwj richnet-tech.com (Wenjun Zheng) Date: Fri Feb 6 09:11:12 2004 Subject: [Mp4-tech] RE: how to decode audioMuxElements Message-ID: Hi, We stream MPEG4 movies from an ISMA server, the audio is AAC or MP3. We are developing our own client. In the audio RTP packets, we saw some extra bytes were added in front of the AAC/MP3 packet(s). I guess they are the audioMuxElements refered in "RFC 3016: RTP Payload Format for MPEG-4 Audio/Visual". Can someone point to me where I can find the details about the terms such as audioMuxElement, muxConfigPresent, StreamMuxConfig, and so on? Thank you in advance for your help. Best, -Wenjun From nicola.conci dit.unitn.it Fri Feb 6 18:11:49 2004 From: nicola.conci dit.unitn.it (Nicola Conci) Date: Fri Feb 6 12:47:42 2004 Subject: [Mp4-tech] FGS Temporal Scalability Message-ID: <00d901c3ecd4$6a5bd150$0100a8c0@mainframe> Hi Everybody! I would like to ask if someone of you is working on FGS software.. Two strange thing happen: 1. If trying to encode a sequence with FGS Temporal Scalability I get an error and the encoding process doesn't finish 2. If using only the base layer temporal scalability and the FGS some times while decoding I get this warning: "FGS VOP fully skipped". Does anyone of you know the reason of this warning? is it due to some error of mine in the parameter file? Thank you very much, Nicola Conci From ralph.sperschneider iis.fraunhofer.de Fri Feb 6 19:32:59 2004 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Fri Feb 6 18:53:15 2004 Subject: [Mp4-tech] RE: how to decode audioMuxElements In-Reply-To: References: Message-ID: <4023DDDB.9070500@iis.fraunhofer.de> Wenjun Zheng wrote: > Hi, > > We stream MPEG4 movies from an ISMA server, the audio is AAC or MP3. We are > developing our own client. In the audio RTP packets, we saw some extra > bytes were added in front of the AAC/MP3 packet(s). I guess they are the > audioMuxElements refered in "RFC 3016: RTP Payload Format for MPEG-4 > Audio/Visual". Can someone point to me where I can find the details about > the terms such as audioMuxElement, muxConfigPresent, StreamMuxConfig, and so > on? > > Thank you in advance for your help. > > Best, > > -Wenjun > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 Dear Wenjin, it looks if you would refer to the LATM header. LATM is specified in ISO/IEC 14496-3. Best regards, Ralph -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 Fraunhofer-IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From mihir ti.com Sat Feb 7 19:03:13 2004 From: mihir ti.com (Mody, Mihir) Date: Sun Feb 8 08:28:25 2004 Subject: [Mp4-tech] Regarding HE AAC Message-ID: Hi, Does any one know when ISO specs will get updated for conformance test vectors (ISO/IEC 14496-4) and reference software (ISO/IEC 14496-5) of HE AAC profile of MPEG4? Regards, Mihir -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040207/a04f93ec/attachment.html From grl iis.fhg.de Mon Feb 9 12:15:32 2004 From: grl iis.fhg.de (Bernhard Grill) Date: Mon Feb 9 09:11:26 2004 Subject: [Mp4-tech] RE: how to decode audioMuxElements In-Reply-To: References: Message-ID: <40276BD4.4040902@iis.fhg.de> Wenjun Zheng wrote: > Hi, > > We stream MPEG4 movies from an ISMA server, the audio is AAC or MP3. We are > developing our own client. In the audio RTP packets, we saw some extra > bytes were added in front of the AAC/MP3 packet(s). I guess they are the > audioMuxElements refered in "RFC 3016: RTP Payload Format for MPEG-4 > Audio/Visual". No. For ISMA you don't need to implement RFC 3016 but ISMA 1.0 / RFC 3640. Can someone point to me where I can find the details about > the terms such as audioMuxElement, muxConfigPresent, StreamMuxConfig, and so > on? Look for LATM in ISO IS 14496-3 (MPEG-4 Audio). You'll find it in subpart 1 of MPEG-4 Audio. Best regards, Bernhard Grill > > Thank you in advance for your help. > > Best, > > -Wenjun > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 -- Dr. Bernhard Grill email: grl@iis.fhg.de Head of Audio Department, FhG-IIS A phone: +49 9131 776-351 Am Wolfsmantel 33, D-91058 Erlangen, Germany FAX: +49 9131 776-398 From purnhage tnt.uni-hannover.de Mon Feb 9 12:05:22 2004 From: purnhage tnt.uni-hannover.de (Heiko Purnhagen) Date: Mon Feb 9 09:15:03 2004 Subject: [Mp4-tech] Regarding HE AAC References: Message-ID: <40276972.A60EA4A1@tnt.uni-hannover.de> Dear Mihir, "Mody, Mihir" wrote: > > Hi, > > Does any one know when ISO specs will get updated for conformance test > vectors (ISO/IEC 14496-4) and reference software (ISO/IEC 14496-5) of > HE AAC profile of MPEG4? > > Regards, > Mihir For the latest status of MPEG specs under development, see "Programme of Work allocated to WG11" on http://www.sc29.org/ ... which currently lists: MPEG-4 Part 5: Reference software AMENDMENT 6: Advanced Video Coding and audio SBR reference software ISO/IEC 14496-5:2001/PDAM 6 MPEG-4 Part 4: Conformance testing AMENDMENT 8: Conformance sequences for bandwidth extension, BIFS and structured audio ISO/IEC 14496-4:200X/PDAM 8 As you can see, both docments are in "PDAM" status at the moment (with the drafts available for download from sc29.org). The next draft, i.e. FPDAM, of the reference software was just completed and will likely be available on sc29.org very soon. A draft version of the actual conformance bitstream set for HE-AAC is expected to be available on ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/ prior to the next MPEG meeting mid March in Munich. Best regards Heiko _______________________________________________________________________ Heiko Purnhagen | Senior Research Engineer | Coding Technologies | phone: +46 (0)8 442 91 69 | D?belnsgatan 64 fax: +46 (0)8 33 09 88 | 113 52 Stockholm, Sweden mailto:hp@CodingTechnologies.com | http://www.CodingTechnologies.com From yuegf ece.gatech.edu Mon Feb 9 17:02:29 2004 From: yuegf ece.gatech.edu (Gaofeng Yue) Date: Mon Feb 9 17:58:34 2004 Subject: [Mp4-tech] help for MPEG-4 software Message-ID: Hi, All, I am new to MPEG-4. Would you recommend some reliable, stable, and fast MPEG-4 software for encoder, decoder, transport over network, and systems? Thanks a lot. Gaofeng --- Gaofeng Yue Doctoral Student School of Electrical and Computer Engineering Georgia Institute of Technology 329923 Georgia Tech Station Atlanta, GA30332 From yuegf ece.gatech.edu Mon Feb 9 17:14:32 2004 From: yuegf ece.gatech.edu (Gaofeng Yue) Date: Mon Feb 9 18:00:40 2004 Subject: [Mp4-tech] help for MPEG4 products Message-ID: Hi, All, I am looking for some commercial MPEG4 products (encoder, decoder, and systems) for conducting a real time conferencing. Would you recommend some companies that provide hardware solutions (of course together with software) for real time communication? I also need to have SDK of that product to develop our own applications. Do you know which company is good at this field and can be trusted? Thanks a lot. Gaofeng --- Gaofeng Yue Doctoral Student School of Electrical and Computer Engineering Georgia Institute of Technology 329923 Georgia Tech Station Atlanta, GA30332 From chenhui62 hotmail.com Tue Feb 10 00:56:12 2004 From: chenhui62 hotmail.com (chen hui62) Date: Tue Feb 10 03:45:04 2004 Subject: [Mp4-tech] help for MPEG4 products Message-ID: HI£¬Gaofeng You can find what you need in http://www.m4if.org/ . CH >From: Gaofeng Yue >To: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] help for MPEG4 products >Date: Mon, 9 Feb 2024 17:14:32 -0500 (EST) > >Hi, All, > >I am looking for some commercial MPEG4 products (encoder, decoder, >and systems) for conducting a real time conferencing. Would you recommend >some companies that provide hardware solutions (of course together with >software) for real time communication? I also need to have SDK of that >product to develop our own applications. Do you know which company is good >at this field and can be trusted? > >Thanks a lot. > >Gaofeng >--- >Gaofeng Yue >Doctoral Student >School of Electrical and Computer Engineering >Georgia Institute of Technology > >329923 Georgia Tech Station >Atlanta, GA30332 >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail From djephcott emeaitsales.com Tue Feb 10 08:34:18 2004 From: djephcott emeaitsales.com (David Jephcott) Date: Tue Feb 10 03:46:30 2004 Subject: R: [Mp4-tech] help for MPEG4 products In-Reply-To: Message-ID: <015301c3efa8$4add7f00$0602a8c0@DavidsSony> Look on www.wischip.com Dave Jephcott WIS Europe -----Messaggio originale----- Da: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] Per conto di Gaofeng Yue Inviato: luned? 9 febbraio 2004 23.15 A: mp4-tech@lists.mpegif.org Oggetto: [Mp4-tech] help for MPEG4 products Hi, All, I am looking for some commercial MPEG4 products (encoder, decoder, and systems) for conducting a real time conferencing. Would you recommend some companies that provide hardware solutions (of course together with software) for real time communication? I also need to have SDK of that product to develop our own applications. Do you know which company is good at this field and can be trusted? Thanks a lot. Gaofeng --- Gaofeng Yue Doctoral Student School of Electrical and Computer Engineering Georgia Institute of Technology 329923 Georgia Tech Station Atlanta, GA30332 _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 tapn8 sussex.ac.uk Tue Feb 10 11:25:10 2004 From: tapn8 sussex.ac.uk (tapn8@sussex.ac.uk) Date: Tue Feb 10 05:09:27 2004 Subject: [Mp4-tech] optimal method for obtaining network load in MPEG-J In-Reply-To: References: Message-ID: <89453656.1076412310@[192.168.0.1]> Dear all, for those who have had a chance to look at MPEG-J in IM1, I'm sure you have seen that the getNetworkLoad() method is missing its implementation. In a quest to fill in this missing bit I have been using a SNMP Java stack to work my way around. This solution though would mean that an additional stack be used with IM1 and might not be suitable for all types of hardware platforms (I maybe wrong here) which is the philosophy behind MPEG-J. If anyone has tackled this issue before, can you recommend an alternate solution? Kind regards, Anthony Kavassis --- Center for VLSI and Computer Graphics University of Sussex From larkind eeng.dcu.ie Tue Feb 10 16:43:02 2004 From: larkind eeng.dcu.ie (Daniel Larkin) Date: Tue Feb 10 15:00:37 2004 Subject: [Mp4-tech] Shape Coding and Scan Order In-Reply-To: Message-ID: Hi, When carrying out transposition of a BAB prior to arithmetic encoding, what should be done with the borders? Regards Daniel From RaviprakashN KPITCummins.com Thu Feb 12 14:28:17 2004 From: RaviprakashN KPITCummins.com (Raviprakash Nayak) Date: Thu Feb 12 19:02:18 2004 Subject: [Mp4-tech] Understanding Delay Message-ID: <69595093233BB547BB70CF5E492B63F203FFC1F7@sohm.kpit.com> Hi, What is the meaning of delay with context to bitrate, I am not able to understand what the table is about. These are the bit rates at the sampling frequency of 16khz. Bit rate (bit/s) Delay (ms) 13667 - 15866) 41.25 15867 - 18200) 28.75 18201 - 20133 ) 40.625 21800 - 24000 ) 41.75 Regards, Ravi Prakash Nayak -----Original Message----- From: Baby Reeja Jayan [mailto:babyreeja@USHUSTECH.COM] Sent: Friday, February 06, 2024 8:33 AM To: Raviprakash Nayak; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Video Download Hi Try the Resources pages of www.m4if.org (under Obtaining the Standard) Reeja -----Original Message----- From: Raviprakash Nayak [mailto:RaviprakashN@KPITCummins.com] Sent: Thursday, February 05, 2024 11:15 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Video Download Hi, Where Do I can get the standards on MPEG 4 video? Regard, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040212/a5a162ee/attachment.html From steffen.maul philips.com Thu Feb 12 14:44:03 2004 From: steffen.maul philips.com (steffen.maul@philips.com) Date: Thu Feb 12 19:02:55 2004 Subject: [Mp4-tech] Data Partitioning Message-ID: Hi all, I have some questions about the Data Partitioning mode. Hopefully someone can answer me. 1. How to handle interlaced information in DP mode? Is DP allowed for interlaced sequences? 2. How to handle B-VOP's in case of DP? Are B-VOP's inserted in the normal mode or is DP forbidden if there are B-VOP's in a sequence? Thanks in advance, Steffen ---------------------------------------------------------------------------------------------------------------------- Steffen Maul Department Video Coding Consumer Businesses Innovation Center Hamburg Philips Semiconductors GmbH phone: +49 40 5613 3725 Stresemannallee 101 fax: +49 40 5613 3525 22529 Hamburg, Germany Intranet: http://pww.ich.sc.philips.com/ Intranet: http://pww.cc-vcs.sc.philips.com/ ---------------------------------------------------------------------------------------------------------------------- From paragchaurasia rediffmail.com Fri Feb 13 05:28:13 2004 From: paragchaurasia rediffmail.com (Parag Chaurasia) Date: Fri Feb 13 06:18:27 2004 Subject: [Mp4-tech] Data Partitioning Message-ID: <20040213052809.30234.qmail@webmail17.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040213/5bfcc601/attachment.html -------------- next part -------------- Hi Steffen, In MPEG-4 Video Coding, Data Partitioning is not supported in B VOPs. Although not mentioned explicitly, Interlacing and Data Partitioning cannot exist together. There are Profiles which support all 3 of these tools, as for example, Advanced Simple Profile (Levels L4 and L5), but all of these features may not be present in a single compressed bitstream. Best Regards, Parag. On Thu, 12 Feb 2024 steffen.maul@philips.com wrote : >Hi all, >I have some questions about the Data Partitioning mode. Hopefully >someone can answer me. > >1. How to handle interlaced information in DP mode? > Is DP allowed for interlaced sequences? > >2. How to handle B-VOP's in case of DP? Are B-VOP's inserted in the normal mode > or is DP forbidden if there are B-VOP's in a sequence? > >Thanks in advance, >Steffen > > >---------------------------------------------------------------------------------------------------------------------- >Steffen Maul > >Department Video Coding >Consumer Businesses Innovation Center Hamburg > >Philips Semiconductors GmbH phone: +49 40 5613 3725 >Stresemannallee 101 fax: +49 40 5613 3525 >22529 Hamburg, Germany > >Intranet: http://pww.ich.sc.philips.com/ >Intranet: http://pww.cc-vcs.sc.philips.com/ >---------------------------------------------------------------------------------------------------------------------- > > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 tma iis.fhg.de Fri Feb 13 12:22:39 2004 From: tma iis.fhg.de (Herbert Thoma) Date: Fri Feb 13 07:19:47 2004 Subject: [Mp4-tech] Data Partitioning References: Message-ID: <402CB37F.7BB35B4F@iis.fhg.de> steffen.maul@philips.com schrieb: > > Hi all, > I have some questions about the Data Partitioning mode. Hopefully > someone can answer me. > > 1. How to handle interlaced information in DP mode? > Is DP allowed for interlaced sequences? Interlace is not possible in DP mode (binary only shape and greyscale shape are not possible, too) > 2. How to handle B-VOP's in case of DP? Are B-VOP's inserted in the normal mode > or is DP forbidden if there are B-VOP's in a sequence? There is no DP mode for B-VOPs. I and P-VOPs are data partitioned and B-VOP are coded the normal (non DP) way. Regards, Herbert. > Thanks in advance, > Steffen > > ---------------------------------------------------------------------------------------------------------------------- > Steffen Maul > > Department Video Coding > Consumer Businesses Innovation Center Hamburg > > Philips Semiconductors GmbH phone: +49 40 5613 3725 > Stresemannallee 101 fax: +49 40 5613 3525 > 22529 Hamburg, Germany > > Intranet: http://pww.ich.sc.philips.com/ > Intranet: http://pww.cc-vcs.sc.philips.com/ > ---------------------------------------------------------------------------------------------------------------------- > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 FhG-IIS A, Studio Department 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 nso01r ecs.soton.ac.uk Fri Feb 13 23:12:59 2004 From: nso01r ecs.soton.ac.uk (Noor Othman) Date: Fri Feb 13 18:32:18 2004 Subject: [Mp4-tech] audioMPEG4 Message-ID: <402D59FB.9050801@ecs> Hi everyone, I really need someone's help over here. I have chosen lpc at 3850 bitrate, I wonder why there are extra number of samples after the encoder. For example in my input audio file there are 89344 samples, and the output is 89624. Fair enough I could see that in AFreadData.c it is said that zeros are filled at the beginning and at the end of the samples buffer. I wonder, what are the purpose of these zeros being added. Then, after passing this encoded audio file into the decoder, the number of samples has reduced to 89600. By the way, the number of samples per frame for this bitrate is 320, so assume that, the 24 samples in the last frame is not counted. Please, I need some insights. And I wonder if this additional samples will affect the anything... or is this has to do with CELP coding... please, please, please, help me. Noor From nick nativ.tv Sun Feb 15 22:37:48 2004 From: nick nativ.tv (Nick Ryan) Date: Mon Feb 16 03:51:50 2004 Subject: [Mp4-tech] DMIF, Flexmux, ISMA and RFCs Message-ID: <1076884668.16573.4.camel@lapdog> Hi there, I am trying to clarify my understanding of how the DMIF, Flexmux, the ISMA standard, RFC3016 and RFC3640 are related. Here are my questions: - How do the ISMA standard and RFC 3640 relate to each other in terms of future standardised IP streaming of MPEG4? - What servers and clients currently use RFC 3640 for streaming delivery? Are there any that are planning support? - As RFC 3640 specifies delivering Access Units and Flexmux specifies multiplexing SL packets are these two basically mutually exclusive? - If this is correct is there a standard way of streaming Flexmux streams over RTP? - With respect to RFC3640 is there any standardised way to transcode or map information from the SL to fields defined in the RTP payload format? - Does anyone have an opinion on the relative merits of using a single Flexmuxed stream or separate elementary streams for IP streamed content delivery with respect to packet header overhead and multiplexing complexity if we are looking at content delivery that will dynamically change based on user interaction? I have read the MPEG4 standard and RFCs. I do not have the ISMA standard but have read discussions about it. This is what I understand so far and please correct me if I am wrong: - Flexmux provides a means of multiplexing SL packetized streams. Flexmux would be implemented within the DMIF layer below the DAI. - RFC 3640 defines transport of audio,video and application MPEG4 elementary streams. RFC 3640 implementations can be built to interoperate with RFC 3016 video payloads. - RFC 3640 defines the transport of MPEG4 Access Units. The information that SL packet headers contain are translated to RTP packet header information. - An implementation of a compliant RFC 3640 receiver within the DMIF layer would extract the RTP header data and encapsulate the AUs inside SL packets with the appropriate information. These would then be presented to the application via the DAI. - Generally, the ISMA standard defines amongst other things using RFC3016 for video delivery. Thanks! Nick Ryan _________________________________________________________________ - Nativ - _________________________________________________________________ phone : +44 (0)207 549 0525 fax : +44 (0)700 580 2540 email : nick.ryan@nativ.tv web : http://nativ.tv _________________________________________________________________ From padmavathi_volety yahoo.co.in Mon Feb 16 10:08:08 2004 From: padmavathi_volety yahoo.co.in (Padmavathi) Date: Mon Feb 16 03:54:19 2004 Subject: [Mp4-tech] MPEG-4 bitstreams for conformance tests Message-ID: <004701c3f446$adaeada0$ca0ca8c0@cspl> Hi.. We would like to know some information regarding confirmance streams. We found some of the compliance streams from the ftp://ftp.tnt.uni-hannover.de/pub/MPEG/video/conformance/. We were not able to find bitstreams donated by 'MPEG-4 Platform Verification Bitstream Development Project of Japan'. These test vectors are mentioned in the subclause 4.5.8 of ISO/IEC 14496-4:2000(E). Please help us in this regard. Regards, Padmavathi Devi. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040216/c43c8e00/attachment.html From camilla octaga.com Mon Feb 16 11:44:10 2004 From: camilla octaga.com (Camilla Gustafsson) Date: Mon Feb 16 09:40:39 2004 Subject: [Mp4-tech] where can I find ISO/IEC 14496-2? References: <1076884668.16573.4.camel@lapdog> Message-ID: <003901c3f479$cf9710f0$7901a8c0@camilla> Hi! I'm a student from Norway working on implementing an MPEG-4 video decoder in an existing streaming player from Octaga. I have a problem with the ISO/IEC 14496-1...it referres to ISO/IEC 14496-2, Annex K (ObjectTypeIndication value shows 0x20). I need to know how the DecoderSpecificInfo is defined. So I was wondering if anybody knows where I can find this ISO/IEC 14496-2?! I have the permission to both the web and ftp connection to these sites: http://itscj.ipsj.or.jp/sc29/, http://www.jpeg.org/, http://www.chiariglione.org/mpeg/. Can I find it there and in that case where? Hope someone can help me! Thanx in advance :-) Best regards, Camilla From getsunil_6 yahoo.co.in Mon Feb 16 13:28:47 2004 From: getsunil_6 yahoo.co.in (=?iso-8859-1?q?venkata=20sunil?=) Date: Mon Feb 16 09:42:54 2004 Subject: [Mp4-tech] assembly code Message-ID: <20040216132848.30574.qmail@web8102.in.yahoo.com> Hello All, I need ADSP-21160 assembly code for Motion estimation (Three step search or Four Step search) and compensation. if any one can help please mail me .. thank you in advance. WITH ALL HAPPYNESS urs sunil Yahoo! India Insurance Special: Be informed on the best policies, services, tools and more. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040216/4c0785d7/attachment.html From Wesley.DeNeve ugent.be Mon Feb 16 16:27:17 2004 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Mon Feb 16 12:21:14 2004 Subject: [Mp4-tech] where can I find ISO/IEC 14496-2? References: <1076884668.16573.4.camel@lapdog> <003901c3f479$cf9710f0$7901a8c0@camilla> Message-ID: <027001c3f4a1$85296360$bacdc19d@Poulenc> Hi, Camilla Gustafsson wrote: > Hi! > I'm a student from Norway working on implementing an MPEG-4 video decoder in > an existing streaming player from Octaga. > > I have a problem with the ISO/IEC 14496-1...it referres to ISO/IEC 14496-2, > Annex K (ObjectTypeIndication value shows 0x20). I need to know how the > DecoderSpecificInfo is defined. So I was wondering if anybody knows where I > can find this ISO/IEC 14496-2?! > I have the permission to both the web and ftp connection to these sites: > http://itscj.ipsj.or.jp/sc29/, http://www.jpeg.org/, > http://www.chiariglione.org/mpeg/. Can I find it there and in that case > where? If you have access to the internal document repository of MPEG, your best bet is to look for document N4350. You will not only need Annex K but also a description of a few syntax elements (included in the document in question) if you want to have a full understanding of the decoder specific information. Otherwise, you'll have to purchase the necessary documents from ISO (http://www.iso.ch/iso/en/CombinedQueryResult.CombinedQueryResult?queryStrin g=14496-2). Best regards, Wesley De Neve From EricWang BENQ.COM Tue Feb 17 16:18:04 2004 From: EricWang BENQ.COM (Eric Wang) Date: Tue Feb 17 04:52:19 2004 Subject: [Mp4-tech] About RVLC Message-ID: <863896A49FD17D499519D8B0E378F96C04202F@bqc-msg10.bqc.corp.com> Skipped content of type multipart/alternativeFrom ramesh sedasolutions.com Tue Feb 17 18:24:18 2004 From: ramesh sedasolutions.com (Ramesh Panchagnula) Date: Wed Feb 18 05:45:19 2004 Subject: [Mp4-tech] Video test bitstreams for Simple Profile Level 0 Message-ID: <005101c3f5c6$73d8bea0$6c01a8c0@sedasolutions.com> Hi all, I am looking for video test bitstreams for MPEG-4 Simple Pofile Level 0. The ISO document "Part 4: Conformance testing" (ISO/IEC 14496-4:2000(E) ) does not contain Simple Profile Level 0 bitstreams. Any pointers as to where they can be obtained from? Thank you very much. Regards. Ramesh -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040217/304da3fc/attachment.html From a17435 alunos.det.ua.pt Wed Feb 18 14:55:33 2004 From: a17435 alunos.det.ua.pt (ANTONIO RICHARD ABREU DA SILVA) Date: Wed Feb 18 17:39:14 2004 Subject: [Mp4-tech] Doubt in MPEG-4 mcbpc Message-ID: I have a doubt concerning the determination of mcpbc in MPEG-4, because at the standard i only have reference for 2 VLC tables for mcbpc (tables B-6 and B-7), nevertheless in MoMusys software i have 4 VLC tables for mcbpc,adding 1 tables for sprite VOP and for separate mode. But where can i find this VLC tables. Can anybody help with this issue. Thanks in advance From b-o-n-d gmx.net Wed Feb 18 22:11:29 2004 From: b-o-n-d gmx.net (bond) Date: Wed Feb 18 17:40:07 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open Message-ID: <003301c3f663$c81c5100$a37a8283@oemcomputer> Hi! Since there has been a lot of development in the AAC codec market in the last months, Roberto Amorim kindly set up a listening test, open for everyone to join, aiming at finding out what encoder performs best AAC encoding at an average bitrate of 128kbps. The used method of comparing codec quality is by performing so-called "Double Blind Listening Tests". In this sort of test, the participant compares various encoded samples against each other and against an uncompressed reference sample. The blind part means that the participant doesn't know which sample was encoded by which encoder. That guarantees there'll be no psychological bias towards his/her favorite codec, or against the codec he/she dislikes. The AAC at 128kbps listening test is now open. Everyone is invited to participate! Instructions on how to participate are available at this page: http://www.rjamorim.com/test/aac128v2/presentation.html The test will run until February 28th, and may be extended if proven necessary. Results of already conducted listening tests can be found here: http://www.rjamorim.com/test/ enjoy -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040218/d55c89ac/attachment.html From rksande samsung.com Thu Feb 19 16:24:40 2004 From: rksande samsung.com (Ravindra Kumar Sande) Date: Thu Feb 19 08:25:10 2004 Subject: [Mp4-tech] Access to test vectors for MPEG-4 AAC Message-ID: <002301c3f6d6$c6e5f7a0$a5466c6b@sisodomain.com> Hello, I am trying to access ftp://mpaudconf@ftp.iis.fhg.de/mpeg4audio-conformance folder to retrieve latest test vectors for MPEG-4 AAC. But it is asking for password. Can you kindly let me know the procedure to get the password to access the mentioned folder. I would be grateful for your immediate response. Best regards Ravindra Kumar Sande, System LSI Division -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040219/716f5711/attachment.html From ugarg neomagic.com Thu Feb 19 19:09:32 2004 From: ugarg neomagic.com (Umang Garg) Date: Thu Feb 19 15:23:40 2004 Subject: [Mp4-tech] Access to test vectors for MPEG-4 AAC In-Reply-To: <002301c3f6d6$c6e5f7a0$a5466c6b@sisodomain.com> References: <002301c3f6d6$c6e5f7a0$a5466c6b@sisodomain.com> Message-ID: <4034BC94.6020006@neomagic.com> Ravindra, If you use the following link, then your password problem will be automatically taken care of: ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance Best Regards, Umang Garg Ravindra Kumar Sande wrote: > Hello, > > I am trying to access > ftp://mpaudconf@ftp.iis.fhg.de/mpeg4audio-conformance folder to > retrieve latest test vectors for MPEG-4 AAC. > > But it is asking for password. Can you kindly let me know the > procedure to get the password to access the mentioned folder. > > I would be grateful for your immediate response. > > Best regards > Ravindra Kumar Sande, > System LSI Division > >------------------------------------------------------------------------ > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040219/71952397/attachment.html From gianni81 tim.it Thu Feb 19 14:48:40 2004 From: gianni81 tim.it (gianni81@tim.it) Date: Thu Feb 19 15:24:24 2004 Subject: [Mp4-tech] MPEG4 scene Message-ID: <20040219134840.KMCJ22762.fep07-svc.tim.it@localhost> Good evening.I am studying the MPEG4 sscene streaming.I manage the scene through XMT-O but I don't know how manage the video in a scene(pause for example).Can you help me? Thank you! From purnhage tnt.uni-hannover.de Thu Feb 19 17:51:17 2004 From: purnhage tnt.uni-hannover.de (Heiko Purnhagen) Date: Thu Feb 19 15:25:25 2004 Subject: [Mp4-tech] Access to test vectors for MPEG-4 AAC References: <002301c3f6d6$c6e5f7a0$a5466c6b@sisodomain.com> Message-ID: <4034E985.2AB78C94@tnt.uni-hannover.de> Dear Ravindra Kumar Sande, > Ravindra Kumar Sande wrote: > > Hello, > > I am trying to access > ftp://mpaudconf@ftp.iis.fhg.de/mpeg4audio-conformance folder to > retrieve latest test vectors for MPEG-4 AAC. > > But it is asking for password. Can you kindly let me know the > procedure to get the password to access the mentioned folder. > > I would be grateful for your immediate response. > > Best regards > Ravindra Kumar Sande, > System LSI Division > The full link incl. password is ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/ as it can e.g. be found on http://www.tnt.uni-hannover.de/project/mpeg/audio/ftp/ hope this helps Heiko Purnhagen _______________________________________________________________________ Heiko Purnhagen | Senior Research Engineer | Coding Technologies | phone: +46 (0)8 442 91 69 | D?belnsgatan 64 fax: +46 (0)8 33 09 88 | 113 52 Stockholm, Sweden mailto:hp@CodingTechnologies.com | http://www.CodingTechnologies.com From yuegf ece.gatech.edu Thu Feb 19 18:55:35 2004 From: yuegf ece.gatech.edu (Gaofeng Yue) Date: Fri Feb 20 05:11:07 2004 Subject: [Mp4-tech] Help on Delivery of MPEG-4 stream over IP networks Message-ID: Dear All, I have some questions about the MPEG-4 stream transport over IP networks. Suppose that a compueter is equipped with a camera and a microphone. Video and audio are generated and encoded in real time according to MPEG-4 encoding standard. Normally, how are these streams transmitted over Internet in real time for interactive communication? Are they transmitted over separate RTP channels? Or they are multiplexed in synchronization layer and then transmitted in a single stream over RTP? In current most implementations, with respect to streaming delivery over Internet, do they follow MPEG-4 system architecture standard to develop components such as DMIF, Flexmux, multiplexing SL packets, synchronization between streams, and DAI? If so, are there any open source? would you please tell me the links to these implemenations? I appreciate your help. Gaofeng From yuegf ece.gatech.edu Thu Feb 19 19:24:14 2004 From: yuegf ece.gatech.edu (Gaofeng Yue) Date: Fri Feb 20 05:13:26 2004 Subject: [Mp4-tech] need for MPEG-4 development system Message-ID: Hi, All, I want to develop a real time video conferencing system over IP networks running on desktop PC based on MPEG-4 standard. I need to find a development platform which includes real time MPEG-4 encoder (audio and video encoding may be done on hardware. The hardware would be a PCI card), BSP, SDK and supporting software. The OS will be Windows or Linux. Which company provide such a development platform? Also, which research group develop conferencing systems based on MPEG-4? Thanks a lot. Gaofeng From k_okamo sic.co.jp Fri Feb 20 09:28:02 2004 From: k_okamo sic.co.jp (=?ISO-2022-JP?B?GyRCMixLXDh3Sj8bKEI=?=) Date: Fri Feb 20 05:15:54 2004 Subject: [Mp4-tech] Simple question for simple profile levels Message-ID: <40355492.6030106@sic.co.jp> Hello Everyone I'm currently in a mobile phone developing project, and this phone device is expected to work as a media player. It's about to support MPEG4 , simple visual profile@L1. However I'm wondering whether a "simple visual profile@L1 support" covers the lower level (L0) or not. Does the simple visual profile levels have lower compatibility? Regard, Kohei Okamoto From ejenn2000-mp4 yahoo.com Fri Feb 20 00:28:27 2004 From: ejenn2000-mp4 yahoo.com (ejenn2000-mp4@yahoo.com) Date: Fri Feb 20 05:17:59 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open Message-ID: <20040220082827.76973.qmail@web80105.mail.yahoo.com> Glad to see this is happening. However, I am sorry (and hate) to say that the result may not have any value because it is comparing apples with oranges. The average bitrate for Ahead/Nero AACenc (a VBR codec) to encode these test samples is as high as 141 kb/s!!!!! However, CBR codecs like iTunes and Real are only at 128 kb/s for all these test samples. Any experienced AAC developer will tell you that at this high bitrate 7-8 kb more will significantly improve the resulting sound quality. It would really be a surprise if iTunes or Real can beat Nero with such a lower bitrate. This is just not a test at 128 kb/s as the title called. It is comparing samples encoded at 141 kb/s and at 128 kb/s. I think the winner is obvious without going thru the test... Jenn > From: bond > Date: February 18, 2024 1:11:29 PM PST > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] public AAC at 128kbps listening test open > > Hi! > > Since there has been a lot of development in the AAC codec market in > the last months, Roberto Amorim kindly set up a listening test, open > for everyone to join, aiming at finding out what encoder performs best > AAC encoding at an average bitrate of 128kbps. > > The used method of comparing codec quality is by performing so-called > "Double Blind Listening Tests". In this sort of test, the participant > compares various encoded samples against each other and against an > uncompressed reference sample. The blind part means that the > participant doesn't know which sample was encoded by which encoder. > That guarantees there'll be no psychological bias towards his/her > favorite codec, or against the codec he/she dislikes. > > > > The AAC at 128kbps listening test is now open. Everyone is invited to > participate! > > Instructions on how to participate are available at this page: > http://www.rjamorim.com/test/aac128v2/presentation.html > > The test will run until February 28th, and may be extended if proven > necessary. > > > Results of already conducted listening tests can be found here: > http://www.rjamorim.com/test/ > > enjoy -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040220/ba8799c6/attachment.html From RaviprakashN KPITCummins.com Fri Feb 20 14:53:27 2004 From: RaviprakashN KPITCummins.com (Raviprakash Nayak) Date: Fri Feb 20 05:20:33 2004 Subject: [Mp4-tech] Bitrate Vs Delay Message-ID: <69595093233BB547BB70CF5E492B63F2042381C9@sohm.kpit.com> Hi, Can any one explain me what is the relationship between "bitrate" and "delay". What this following line is explaining. the coder is capable of generating arbitrary bit rate between 13.667-20.1 kbit/s and 21.8-24 kbit/s. The delay in this mode, is a function of the bit rate. Bit rate (bit/s) Delay (ms) 13667 - 15866 41.25 15867 - 18200 28.75 18201 - 20133 40.625 21800 - 24000 41.75 Also, some one can explain me what this means or any good website for these understanding. Regards, Ravi Prakash Nayak U -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040220/ec82cf8d/attachment.html From dipan ee.iitb.ac.in Fri Feb 20 15:30:59 2004 From: dipan ee.iitb.ac.in (Dipan Mehta) Date: Fri Feb 20 05:31:22 2004 Subject: [Mp4-tech] need for MPEG-4 development system In-Reply-To: References: Message-ID: Consider ffmpeg. See http://ffmpeg.sourceforge.net/ or Project Mayo. http://www.projectmayo.com/ Hope this helps. Dipan... On Thu, 19 Feb 2004, Gaofeng Yue wrote: #Hi, All, # #I want to develop a real time video conferencing system over IP networks #running on desktop PC based on MPEG-4 standard. I need to find a #development platform which includes real time MPEG-4 encoder (audio and #video encoding may be done on hardware. The hardware would be a PCI card), #BSP, SDK and supporting software. The OS will be Windows or Linux. Which #company provide such a development platform? # #Also, which research group develop conferencing systems based on MPEG-4? # #Thanks a lot. #Gaofeng # #_______________________________________________ #Mp4-tech mailing list #Mp4-tech@lists.mpegif.org #http://lists.mpegif.org/mailman/listinfo/mp4-tech # #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 # -- Dipan Mehta Deepak Nayak Zainul Charbiwala For Dizzy Research Pvt Ltd 10, Kim Cottage, Near Maneklal Compound, Ghatkopar (West), Mumbai - 400 086. Cell: +91-9820691951 From chris.purdy exgate.tek.com Fri Feb 20 02:18:42 2004 From: chris.purdy exgate.tek.com (chris.purdy@exgate.tek.com) Date: Fri Feb 20 05:32:11 2004 Subject: [Mp4-tech] H264/MPEG4 over MPEG 2 TS- got Streams or method? Message-ID: <7BFA089863712444A49996E9BBB790102D1281@eu-hist-g03.hist.tek.com> Does anybody have a sample transport stream - MPEG2 - with H264 or MPEG4 content embedded? Does anybody know how such content is carried? Is it in transport packet PES with payload_start_indicator set? can the content carried be fixed bit-rate? We know about stream types and the MPEG-2 signaling, but not how to insert the content to keep decoder happy. Chris Purdy Chris Purdy BSc CEng MIEE MPEG Applications Engineer Tektronix +44 1223 200 700 -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040220/6c386fbc/attachment.html From ykgupta noida.hcltech.com Fri Feb 20 16:05:51 2004 From: ykgupta noida.hcltech.com (Yogender Kumar Gupta, Noida) Date: Fri Feb 20 06:18:51 2004 Subject: [Mp4-tech] Simple question for simple profile levels Message-ID: <1B3885BC15C7024C845AAC78314766C503805966@exch-01.noida.hcltech.com> Hi Kohei, All decoders which support Simple Visual Profile@L1 would automatically support L0 and you need not worry about that. Warm Regards Yogender -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of k_okamo@sic.co.jp Sent: Friday, February 20, 2024 5:58 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Simple question for simple profile levels Hello Everyone I'm currently in a mobile phone developing project, and this phone device is expected to work as a media player. It's about to support MPEG4 , simple visual profile@L1. However I'm wondering whether a "simple visual profile@L1 support" covers the lower level (L0) or not. Does the simple visual profile levels have lower compatibility? Regard, Kohei Okamoto _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 idimkovic nero.com Fri Feb 20 11:37:57 2004 From: idimkovic nero.com (Ivan Dimkovic) Date: Fri Feb 20 06:19:36 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open References: <20040220082827.76973.qmail@web80105.mail.yahoo.com> Message-ID: <036001c3f79d$9c0cda40$2201a8c0@diamorphine> Hi Jenn, Actually it was debated in earlier tests - I fully agree that comparing so-called 'CBR' codec (although they are not really CBR in strict terms) and 'VBR' ones is comparing apples and oranges. However, like in earlier test ("128 kb/s extension test") codecs were used with settings which equal to 128 kb/s >in average< Although Nero codec in fact gives 141 kb/s on this sample set - it has been found out ( http://www.hydrogenaudio.org/index.php?showtopic=18474&view=findpost&p=18586 8 ) that it gives ~2% higher bit rate than 128 kb/s in average (more than 500 tracks encoded) - which is OK for this test (last extension test had even bigger deviations) - fact that it is 141 kb/s on this particular sample test only tells that the sample set is hard to encode - when encoding to VBR you want to end up with constant quality, not constant rate. Problem with testing 'VBR' encoding modes is that you can't really tell encoder that you want some bit rate, otherwise you end up with CBR codec... but I agree that in that case you shouldn't really mix CBR and VBR operating modes of encoders. -- Ivan ----- Original Message ----- From: ejenn2000-mp4@yahoo.com To: mp4-tech@lists.mpegif.org Sent: Friday, February 20, 2024 9:28 AM Subject: Re: [Mp4-tech] public AAC at 128kbps listening test open Glad to see this is happening. However, I am sorry (and hate) to say that the result may not have any value because it is comparing apples with oranges. The average bitrate for Ahead/Nero AACenc (a VBR codec) to encode these test samples is as high as 141 kb/s!!!!! However, CBR codecs like iTunes and Real are only at 128 kb/s for all these test samples. Any experienced AAC developer will tell you that at this high bitrate 7-8 kb more will significantly improve the resulting sound quality. It would really be a surprise if iTunes or Real can beat Nero with such a lower bitrate. This is just not a test at 128 kb/s as the title called. It is comparing samples encoded at 141 kb/s and at 128 kb/s. I think the winner is obvious without going thru the test... Jenn > From: bond > Date: February 18, 2024 1:11:29 PM PST > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] public AAC at 128kbps listening test open > > Hi! > > Since there has been a lot of development in the AAC codec market in > the last months, Roberto Amorim kindly set up a listening test, open > for everyone to join, aiming at finding out what encoder performs best > AAC encoding at an average bitrate of 128kbps. > > The used method of comparing codec quality is by performing so-called > "Double Blind Listening Te! sts". In this sort of test, the participant > compares various encoded samples against each other and against an > uncompressed reference sample. The blind part means that the > participant doesn't know which sample was encoded by which encoder. > That guarantees there'll be no psychological bias towards his/her > favorite codec, or against the codec he/she dislikes. > > > > The AAC at 128kbps listening test is now open. Everyone is invited to > participate! > > Instructions on how to participate are available at this page: > http://www.rjamorim.com/test/aac128v2/presentation.html > > The test will run until February 28th, and may be extended if proven > necessary. > > > Results of already conducted listening ! tests can be found here: > http://www.rjamorim.com/test/ > > enjoy _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 christopher macnytt.com Fri Feb 20 11:52:18 2004 From: christopher macnytt.com (Christopher Anderton-Blomquist) Date: Fri Feb 20 06:20:17 2004 Subject: [Mp4-tech] Envivio for OS X? Message-ID: For a couple of months i saw that Envivios Quicktime MPEG4 plug in should be aviable soon for MacOS X? Any pepole from Envivo that can comment? regards/Christopher From jan.vandermeer philips.com Fri Feb 20 12:38:10 2004 From: jan.vandermeer philips.com (jan.vandermeer@philips.com) Date: Fri Feb 20 06:56:42 2004 Subject: [Mp4-tech] H264/MPEG4 over MPEG 2 TS- got Streams or method? Message-ID: Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: W5771.zip Type: application/zip Size: 82026 bytes Desc: not available Url : /pipermail/mp4-tech/attachments/20040220/61f86404/W5771-0001.zip From hans-juergen.bardenhagen arcor.de Fri Feb 20 12:35:05 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Feb 20 09:02:34 2004 Subject: [Mp4-tech] Bitrate Vs Delay In-Reply-To: <69595093233BB547BB70CF5E492B63F2042381C9@sohm.kpit.com> Message-ID: <93CjsFhETuB@ID-50271.user.uni-berlin.de> Hi Ravi, on 20.02.04, 14:23 local time (received 20.02.04, 12:18 GMT+1) you wrote: > Can any one explain me what is the relationship between "bitrate" and > "delay". The higher the encoding bitrate is, the higher the encoding delay will be. Delay means the difference in time between starting the encoding and obtaining the output bitstream which can be several hundred milliseconds. To minimize this delay is important for all real-time applications like bi-directional communication in video conferencing systems, so you need specialized codecs for this purpose, e.g. the Low Delay object type for AAC general audio or others for speech content. > Also, some one can explain me what this means or any good website for > these understanding. Maybe the Wiki of Audiocoding.com can give some help: http://www.audiocoding.com/wiki/ ZZee ya, Hans-J?rgen From hans-juergen.bardenhagen arcor.de Fri Feb 20 12:35:05 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Feb 20 09:03:24 2004 Subject: [Mp4-tech] Help on Delivery of MPEG-4 stream over IP networks In-Reply-To: Message-ID: <93CjrX1jTuB@ID-50271.user.uni-berlin.de> Hi Gaofeng, on 19.02.04, 18:55 local time (received 20.02.04, 12:18 GMT+1) you wrote: > Normally, how are these streams transmitted over Internet in real > time for interactive communication? Are they transmitted over > separate RTP channels? Or they are multiplexed in synchronization > layer and then transmitted in a single stream over RTP? The MPEG-4 Systems standard allows both methods, as far as I know. > In current most implementations, with respect to streaming delivery > over Internet, do they follow MPEG-4 system architecture standard to > develop components such as DMIF, Flexmux, multiplexing SL packets, > synchronization between streams, and DAI? If so, are there any open > source? would you please tell me the links to these implemenations? http://mpeg4ip.sourceforge.net/ and http://sourceforge.net/projects/mpeg4ip/ This open source project started by Cisco does not use most of the Systems features, e.g. it can only send and receive one complete RTP stream of MPEG-4 content, not single tracks within a scene from different locations. But it might be used as a video conferencing application over IP, although the project admin does not recommend it due to the encoding delay if I remember correctly. You should probably test it yourself if it can be used for your purpose. The live-streaming tool in their package "mp4live" only exists in a Linux version, by the way. On the player/client side there also exists GPAC/Osmo4 which is probably the most advanced MPEG-4 Systems open source project at the moment, but they do not offer a streaming/server solution yet. http://gpac.sourceforge.net/ The open source VideoLAN project also provides a client and server for MPEG-4 content with VLC, but it does not support Systems features yet. http://www.videolan.org/ And of course there is the IBM Toolkit for MPEG-4, but it's not open source, although free for testing purposes. ZZee ya, Hans-J?rgen From hans-juergen.bardenhagen arcor.de Fri Feb 20 12:35:05 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Feb 20 09:04:05 2004 Subject: [Mp4-tech] H264/MPEG4 over MPEG 2 TS- got Streams or method? In-Reply-To: <7BFA089863712444A49996E9BBB790102D1281@eu-hist-g03.hist.tek.com> Message-ID: <93CjsWqzTuB@ID-50271.user.uni-berlin.de> Hi Chris, on 20.02.04, 02:18 local time (received 20.02.04, 12:18 GMT+1) you wrote: > Does anybody have a sample transport stream - MPEG2 - with H264 or > MPEG4 content embedded? You might have a look at VLS (not VLC), the command line streaming server of the VideoLAN project which uses MPEG-2 transport streams for everything, as far as I know. http://www.videolan.org/ ZZee ya, Hans-J?rgen From hans-juergen.bardenhagen arcor.de Fri Feb 20 12:35:06 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Feb 20 09:04:48 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open In-Reply-To: <20040220082827.76973.qmail@web80105.mail.yahoo.com> Message-ID: <93CjtVIETuB@ID-50271.user.uni-berlin.de> Hi Jenn(y), on 20.02.04, 00:28 local time (received 20.02.04, 12:18 GMT+1) you wrote: > Glad to see this is happening. However, I am sorry (and hate) to say > that the result may not have any value because it is comparing apples > with oranges. The average bitrate for Ahead/Nero AACenc (a VBR codec) > to encode these test samples is as high as 141 kb/s!!!!! However, CBR > codecs like iTunes and Real are only at 128 kb/s for all these test > samples. The problem with Nero is that it does not allow a fine-tuning of its VBR mode like e.g. FAAC does or its predecessor PsyTEL could do with -qvbr. So the VBR preset closest to ~128 kbps had to be used, and this seems to be -internet (not -streaming like the online help suggests). > Any experienced AAC developer will tell you that at this > high bitrate 7-8 kb more will significantly improve the resulting > sound quality. It would really be a surprise if iTunes or Real can > beat Nero with such a lower bitrate. This is just not a test at 128 > kb/s as the title called. It is comparing samples encoded at 141 kb/s > and at 128 kb/s. I think the winner is obvious without going thru the > test... The purpose of this second test was to compare AAC codecs at their best settings for approximately 128 kbps/stereo (not forced to CBR mode like the first one), and so you have to live with the differences in resulting VBR bitrates. But you would be partly correct if the results should not point out these differences and simply claim e.g. Nero to be the winner (which in my opinion is not so sure as you seem to think). A bigger problem might be the lack of a low-quality anchor, so the differences and rankings between the competitors could be exaggerated again which would not give a "real life" perspective compared to MP3 codecs for example. But all this is speculation and might come out completely different in the end. ZZee ya, Hans-J?rgen From gianni81 tim.it Fri Feb 20 14:46:30 2004 From: gianni81 tim.it (gianni81@tim.it) Date: Fri Feb 20 12:04:19 2004 Subject: [Mp4-tech] MPE4 scene and XMT-O Message-ID: <20040220134630.CTY1581.fep02-svc.tim.it@localhost> Good evening.I am studying the MPEG4 sscene streaming.I manage the scene through XMT-O but I don't know how manage the video in a scene(pause for example).Can you help me? Thank you! From dsearles mmc.atmel.com Fri Feb 20 09:24:49 2004 From: dsearles mmc.atmel.com (Dan Searles) Date: Fri Feb 20 12:05:54 2004 Subject: [Mp4-tech] Doubt in MPEG-4 mcbpc References: Message-ID: <403618B1.8040201@mmc.atmel.com> I noted that VlcDecMCBPC_com_sprite() and VlcDecMCBPC_sep() are not called, so the tables they use (MCBPCspritetab and MCBPCtab_sep) are not used either. Looks like some left over dead code. Dan Searles ANTONIO RICHARD ABREU DA SILVA wrote: > I have a doubt concerning the determination of mcpbc in MPEG-4, > because at the standard i only have reference for 2 VLC tables for > mcbpc (tables B-6 and B-7), nevertheless in MoMusys software i have 4 > VLC tables for mcbpc,adding 1 tables for sprite VOP and for separate > mode. But where can i find this VLC tables. Can anybody help with this > issue. > > Thanks in advance > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 > > -- Dan Searles --------------------------------------- Atmel Multimedia & Communications 3800 Gateway Centre, Suite 311 Morrisville, NC 27560 phone: (919)462-6553 fax: (919)462-0300 --------------------------------------- From gianni81 tim.it Fri Feb 20 18:29:57 2004 From: gianni81 tim.it (gianni81@tim.it) Date: Sat Feb 21 08:51:40 2004 Subject: [Mp4-tech] MPEG4 scene and XMT-O Message-ID: <20040220172957.KHBS10835.fep04-svc.tim.it@localhost> Good evening.I am studying the streaming of MPEG4 scene over IP.I realize the scene with XMT-O but I haven't tutorial on it.My problem is find commands for the video (like "pause" if I "click" with mouse on the video).Can you help me? Thanks From garysull windows.microsoft.com Fri Feb 20 12:14:49 2004 From: garysull windows.microsoft.com (Gary Sullivan) Date: Sat Feb 21 08:55:17 2004 Subject: [Mp4-tech] Bitrate Vs Delay Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246064AD356@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Not quite correct. Actually there are several different definitions of delay, and it is best to ask for more detail about what someone means when they refer to delay. In videoconferencing, delay ordinarily means the amount of time between when you move and when the person you're talking to sees you move. In broadcast video, delay may mean the amount of time between when you punch the button on your remote control to switch to a new channel and when the new channel shows up on your TV (or when the picture that shows up reaches adequate quality, or when the picture both shows up and starts moving properly). Those are different things. Higher encoding bit rate does not mean higher delay. In fact one of the best ways to reduce delay is to increase the channel bit rate that you're operating over, which allows frame rate to increase and other sources of delay to be reduced. For example, uncompressed PCM video has very high bit rate and very low delay. There are many sources of delay in a video codec system. Here is a non-exhaustive list for videoconferencing applications: 1) the time between when you move and when the camera shutter integration time stops 2) the time it takes to dump a picture from the camera into the capture device 3) time for pre-processing in an encoder for noise reduction, etc. 4) re-ordering of pictures prior to encoding, e.g., for conventional B picture use 5) the time it takes an encoder to encode a picture and turn it into compressed bits 6) extra buffering delay used to allow the encoder to vary the number of bits it spends on different pictures 7) extra buffering delays introduced in the encoder to make its implementation easier 8) the time it takes to multiplex or packetize the video and perform channel coding 9) the time it takes the bits to get from the encoder to the decoder 10) the time it takes to perform channel decoding and demultiplex or depacketize the video 11) the time it takes a decoder to process the compressed bits into a decompressed picture 12) re-ordering of pictures prior to display, e.g., for conventional B picture use 13) the time it takes to post-process decoded pictures, e.g., for deblocking 14) time delays added so that the relative timing of the output pictures matches the input timing 15) time delays added for synchronization with other events such as audio sync 16) extra buffering delays introduced in the decoder to make its implementation easier 17) the time it takes the decoder to get the output picture onto the display It's hard to get all that to add up to less than a few hundred milliseconds on average, particularly if your video frame rate is relatively low. In videoconferencing, sources 4 and 12 are ordinarily eliminated, and sources 6 and 14 are also greatly compromised and all the others are minimized to the extent feasible for the implementation. In broadcast, you also need to think about channel acquisition refresh time. In DVD-style playback, you also need to think about random-access seek time. High frame rates (which tend to require high bit rates) can reduce delay dramatically. Delay gets pretty awful at a few frames per second. A videoconferencer's dream is to operate beyond 30 fps. I think no videoconferencing systems today have that capability. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> Hans-Juergen Bardenhagen +> Sent: Friday, February 20, 2024 3:56 AM +> To: mp4-tech@lists.mpegif.org +> Subject: Re: [Mp4-tech] Bitrate Vs Delay +> +> +> Hi Ravi, +> +> on 20.02.04, 14:23 local time (received 20.02.04, 12:18 +> GMT+1) you wrote: +> +> > Can any one explain me what is the relationship between +> "bitrate" and +> > "delay". +> +> The higher the encoding bitrate is, the higher the encoding +> delay will +> be. Delay means the difference in time between starting the +> encoding and +> obtaining the output bitstream which can be several hundred +> milliseconds. To minimize this delay is important for all real-time +> applications like bi-directional communication in video +> conferencing +> systems, so you need specialized codecs for this purpose, +> e.g. the Low +> Delay object type for AAC general audio or others for speech content. +> +> > Also, some one can explain me what this means or any good +> website for +> > these understanding. +> +> Maybe the Wiki of Audiocoding.com can give some help: +> http://www.audiocoding.com/wiki/ ZZee ya, Hans-J?rgen _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 Feb 20 12:14:49 2004 From: garysull windows.microsoft.com (Gary Sullivan) Date: Sat Feb 21 08:57:57 2004 Subject: [Mp4-tech] Simple question for simple profile levels Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246064AD355@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> I'm not sure that's true. SP@L0 did not exist in the original MPEG-4 Visual specification. There is a special (new) profile_and_level_indication code (0x08) used to indicate that the stream conforms to SP@L0. Decoders are normally designed to check the value of profile_and_level_indication, and to reject any stream that contains a value of profile_and_level_indication that they do not recognize (unless the standard tells them to do otherwise, and I don't think this standard does). Since the code for SP@L0 was selected AFTER the higher levels of SP were specified, decoders that were designed before SP@L0 existed will probably reject all SP@L0 bitstreams. At least that's my understanding. SP decoders designed after SP@L0 existed would probably accept SP@L0 bitstreams. I don't personally think they should be required to accept them, because this would mean that the addition of SP@L0 would be a non-compatible amendment to an existing standard (an amendment that declares existing conforming implementations to be non-conforming) -- something that is ordinarily not considered good standardization practice. However, I don't actually see any statement in the standard that indicates that support for L0 is not required for decoders that support higher levels. So I think the answer to the question is somewhat in a gray area. Before January 2001 I think the answer was more clear. However the bottom line is that if you're designing a decoder NOW, you should definitely support L0 if you're going to support L1. It requires no real extra effort and makes you compatible with more encoders. Best Regards, Gary Sullivan +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of +> Yogender Kumar Gupta, Noida +> Sent: Friday, February 20, 2024 2:36 AM +> To: ????; mp4-tech@lists.mpegif.org +> Subject: RE: [Mp4-tech] Simple question for simple profile levels +> +> +> Hi Kohei, +> All decoders which support Simple Visual Profile@L1 would +> automatically +> support L0 and you need not worry about that. +> Warm Regards +> Yogender +> +> -----Original Message----- +> From: mp4-tech-bounces@lists.mpegif.org +> [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of +> k_okamo@sic.co.jp +> Sent: Friday, February 20, 2024 5:58 AM +> To: mp4-tech@lists.mpegif.org +> Subject: [Mp4-tech] Simple question for simple profile levels +> +> +> Hello Everyone +> +> I'm currently in a mobile phone developing project, +> and this phone device is expected to work as a media player. +> It's about to support MPEG4 , simple visual profile@L1. +> However I'm wondering whether a "simple visual profile@L1 support" +> covers the lower level (L0) or not. +> Does the simple visual profile levels have lower compatibility? +> +> Regard, +> Kohei Okamoto +> +> +> _______________________________________________ +> Mp4-tech mailing list +> Mp4-tech@lists.mpegif.org +> http://lists.mpegif.org/mailman/listinfo/mp4-tech +> +> 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 _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 b-o-n-d gmx.net Sat Feb 21 11:36:41 2004 From: b-o-n-d gmx.net (bond) Date: Sat Feb 21 09:00:57 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open References: <20040220082827.76973.qmail@web80105.mail.yahoo.com> Message-ID: <005901c3f866$9b0bcba0$a37a8283@oemcomputer> forwarding the reply of Robert Amorim: > ----- Original Message ----- > From: ejenn2000-mp4@yahoo.com > To: mp4-tech@lists.mpegif.org > Sent: Friday, February 20, 2024 9:28 AM > Subject: Re: [Mp4-tech] public AAC at 128kbps listening test open > > > Glad to see this is happening. However, I am sorry (and hate) to say > that the result may not have any value because it is comparing apples > with oranges. The average bitrate for Ahead/Nero AACenc (a VBR codec) > to encode these test samples is as high as 141 kb/s!!!!! However, CBR > codecs like iTunes and Real are only at 128 kb/s for all these test > samples. Any experienced AAC developer will tell you that at this high > bitrate 7-8 kb more will significantly improve the resulting sound > quality. It would really be a surprise if iTunes or Real can beat Nero > with such a lower bitrate. This is just not a test at 128 kb/s as the > title called. It is comparing samples encoded at 141 kb/s and at 128 > kb/s. I think the winner is obvious without going thru the test... There are several problems the listening test conducer needs to cope with: - Usefulness: It won't help if a different encoder setting is used for each sample (I.E, to hand-tweak until the 128kbps mark is reached). Because that doesn't reflect the dad-to-day usage of codecs - users don't re-encode their album tracks with several different quality settings to reach exactly 128kbps at each one of them, they choose a setting and encode the entire collection with it, in the expectative that it will reach a desired average bitrate in the end. - Few VBR profiles: Ahead/Nero has the -radio profile, which average bitrate for the test samples would stay under 100kbps, and the -internet profile, that was the one used and ended up at 141kbps. My choices, considering those results, were either go with CBR encoding at 128kbps - again, a setting that wouldn't reflect day-to-day usage for the target audience of my tests that prefers VBR -, to give up testing Nero - which would also make the test audience/participants unhappy - and go with a bitrate slightly higher than the others. That was my choice. I might repent of it later, but it seemed the most sensible at the time I was deciding about codecs and settings. Last but not least, it's worth mentioning that on large sample suites, Nero does indeed come close to 128kbps. References: http://www.hydrogenaudio.org/index.php?showtopic=18474&view=findpost&p=185868 http://www.hydrogenaudio.org/index.php?showtopic=18474&view=findpost&p=185992 Regards; Roberto. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040221/5077d655/attachment.html From b-o-n-d gmx.net Sat Feb 21 11:39:14 2004 From: b-o-n-d gmx.net (bond) Date: Sat Feb 21 09:03:31 2004 Subject: [Mp4-tech] public AAC at 128kbps listening test open References: <93CjtVIETuB@ID-50271.user.uni-berlin.de> Message-ID: <006501c3f866$f32d70e0$a37a8283@oemcomputer> forwarding the reply of Robert Amorim: > A bigger problem might be the lack of a low-quality anchor, so the > differences and rankings between the competitors could be exaggerated > again which would not give a "real life" perspective compared to MP3 > codecs for example. But all this is speculation and might come out > completely different in the end. About MP3: Lame has already been tested against the best AAC encoder at the time, and it lost (128kbps extension test). It'll be tested again in the next 128kbps multiformat test, and I expect it to be worse then AAC again. I guess that gives a good perspective that MP3 is, indeed, inferior to MP4. About rankings exaggerated: I also believed in that, but I realized that it isn't that important after the MP3 test I conduced. The supposed anchor (Xing) performed very well indeed, and that didn't make the test any less useful. Besides, the ranking labels are already laid out at the ABC/HR app, ranging from Imperceptible to Very annoying. That gives some safety that the test participants won't rank a codec too low because the others are too high. I expect them to use common sense when ranking. Regards; Roberto. From mehmet_gurkan msn.com Sat Feb 21 11:45:05 2004 From: mehmet_gurkan msn.com (Mehmet Gurkan) Date: Sat Feb 21 09:06:13 2004 Subject: [Mp4-tech] [M4IF Technotes] 3GP to MP4 Message-ID: Hi, i need .3gp ande mp4 encoder can you send ? -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040221/28b69556/attachment-0001.html From hans-juergen.bardenhagen arcor.de Sat Feb 21 11:33:08 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Sat Feb 21 09:08:24 2004 Subject: [Mp4-tech] Bitrate Vs Delay In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE246064AD356@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: <93GkDZSETuB@ID-50271.user.uni-berlin.de> Hi Gary, on 20.02.04, 12:14 local time (received 21.02.04, 05:06 GMT+1) you wrote: > Higher encoding bit rate does not mean higher delay. In fact one of > the best ways to reduce delay is to increase the channel bit rate > that you're operating over, which allows frame rate to increase and > other sources of delay to be reduced. > > For example, uncompressed PCM video has very high bit rate and very > low delay. OK, but Ravi gave an example of a highly compressing codec, probably a wideband speech codec like AMR or CELP and was not referring to uncompressed speech content. But you're right, I should have written "The higher the encoding complexity is...", e.g. due to additional coding tools with a higher complexity in order to enhance the sound quality for a given input file or bitstream at the same bitrate. I think the important thing for him to know is that there are codecs (or object types of a codec) specialized for a low delay and others for a high sound quality, and that these two properties are not easy to match at a given bitrate. ZZee ya, Hans-J?rgen From k_okamo sic.co.jp Mon Feb 23 15:59:26 2004 From: k_okamo sic.co.jp (=?ISO-2022-JP?B?GyRCMixLXDh3Sj8bKEI=?=) Date: Mon Feb 23 10:59:55 2004 Subject: [Mp4-tech] Compatibility of Mpeg-4 AAC. Message-ID: <4039A4CE.1050904@sic.co.jp> Hello Everyone, I've read this brochure of "What's AAC?" on the mp4 Industry Forum page. It declares the Mpeg-4 AAC as the "Most powerful audio codec..." , and lists as a reason that my country has chosen Mpeg-2 AAC for digital broadcast. Does this mean that the Mpeg-4 AAC covers the Mpeg-2 AAC entirely? Is a Mpeg-4 AAC supported device able to encode/decode Mpeg-2 AAC content? Regard, Kohei Okamoto -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040223/6391b9bd/attachment.html From tsangw alum.rpi.edu Mon Feb 23 16:59:30 2004 From: tsangw alum.rpi.edu (William Tsang{RPI Alum}) Date: Mon Feb 23 11:01:49 2004 Subject: [Mp4-tech] MP4 file format? Message-ID: <4039C0F2.20807@alum.rpi.edu> Hi all I would like to ask if there are any sites that explain the .mp4 file format? Not just the structure of a .mp4 file, but like telling you from what bytes represent what kind of information...etc. I know .mp4 is not a simpel video file but instead a file container that have both video and audio files inside it. I am trying to write a function that will parse the .mp4 file and locate the video & audio data. But i can't find the .mp4 file header anywhere.....:( Thanks in advance guys !!!!!! Will From gianni81 tim.it Mon Feb 23 11:45:06 2004 From: gianni81 tim.it (gianni81@tim.it) Date: Mon Feb 23 11:02:34 2004 Subject: [Mp4-tech] MPEG4 scene and XMT Message-ID: <20040223104506.WUKR11861.fep06-svc.tim.it@localhost> Good morning. I am realizing MPEG4 scenes through the IBM toolkit; my problem is to manage the audio and video in the scene.Can I stop/play the video in the scene? I am searching a particular tag for this! Can you help me? From cyril.bes philips.com Mon Feb 23 11:51:31 2004 From: cyril.bes philips.com (cyril.bes@philips.com) Date: Mon Feb 23 11:02:41 2004 Subject: [Mp4-tech] ISO/IEC FDIS 14496-12 ISO base media file format Message-ID: Hi all, Is this document free of charge ? If yes, can someone provide me a copy of it, or tell where to find it ? thanks in advance Cyril -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040223/5c03ccd9/attachment.html From padmavathi_volety yahoo.co.in Mon Feb 23 16:35:29 2004 From: padmavathi_volety yahoo.co.in (Padmavathi) Date: Mon Feb 23 11:02:48 2004 Subject: [Mp4-tech] Simple question for simple profile levels References: <91D7F2CEE3425A4A9D11311D09FCE246064AD355@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: <00e201c3f9fc$f2e6e980$ca0ca8c0@cspl> Hi.. We would like to know some information regarding confirmance streams. We found some of the compliance streams from the ftp://ftp.tnt.uni-hannover.de/pub/MPEG/video/conformance/. We were not able to find bitstreams donated by 'MPEG-4 Platform Verification Bitstream Development Project of Japan'. These test vectors are mentioned in the subclause 4.5.8 of ISO/IEC 14496-4:2000(E). Thanks in advance for rour help. Regards, Padmavathi. ----- Original Message ----- From: "Gary Sullivan" To: "Yogender Kumar Gupta, Noida" ; "????" ; Sent: Saturday, February 21, 2024 1:44 AM Subject: RE: [Mp4-tech] Simple question for simple profile levels > > I'm not sure that's true. SP@L0 did not exist in the original MPEG-4 > Visual specification. There is a special (new) > profile_and_level_indication code (0x08) used to indicate that the > stream conforms to SP@L0. Decoders are normally designed to check the > value of profile_and_level_indication, and to reject any stream that > contains a value of profile_and_level_indication that they do not > recognize (unless the standard tells them to do otherwise, and I don't > think this standard does). Since the code for SP@L0 was selected AFTER > the higher levels of SP were specified, decoders that were designed > before SP@L0 existed will probably reject all SP@L0 bitstreams. At > least that's my understanding. > > SP decoders designed after SP@L0 existed would probably accept SP@L0 > bitstreams. I don't personally think they should be required to accept > them, because this would mean that the addition of SP@L0 would be a > non-compatible amendment to an existing standard (an amendment that > declares existing conforming implementations to be non-conforming) -- > something that is ordinarily not considered good standardization > practice. However, I don't actually see any statement in the standard > that indicates that support for L0 is not required for decoders that > support higher levels. > > So I think the answer to the question is somewhat in a gray area. > Before January 2001 I think the answer was more clear. > > However the bottom line is that if you're designing a decoder NOW, you > should definitely support L0 if you're going to support L1. It requires > no real extra effort and makes you compatible with more encoders. > > Best Regards, > > Gary Sullivan > > +> -----Original Message----- > +> From: mp4-tech-bounces@lists.mpegif.org > +> [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of > +> Yogender Kumar Gupta, Noida > +> Sent: Friday, February 20, 2024 2:36 AM > +> To: ????; mp4-tech@lists.mpegif.org > +> Subject: RE: [Mp4-tech] Simple question for simple profile levels > +> > +> > +> Hi Kohei, > +> All decoders which support Simple Visual Profile@L1 would > +> automatically > +> support L0 and you need not worry about that. > +> Warm Regards > +> Yogender > +> > +> -----Original Message----- > +> From: mp4-tech-bounces@lists.mpegif.org > +> [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of > +> k_okamo@sic.co.jp > +> Sent: Friday, February 20, 2024 5:58 AM > +> To: mp4-tech@lists.mpegif.org > +> Subject: [Mp4-tech] Simple question for simple profile levels > +> > +> > +> Hello Everyone > +> > +> I'm currently in a mobile phone developing project, > +> and this phone device is expected to work as a media player. > +> It's about to support MPEG4 , simple visual profile@L1. > +> However I'm wondering whether a "simple visual profile@L1 support" > +> covers the lower level (L0) or not. > +> Does the simple visual profile levels have lower compatibility? > +> > +> Regard, > +> Kohei Okamoto > +> > +> > +> _______________________________________________ > +> Mp4-tech mailing list > +> Mp4-tech@lists.mpegif.org > +> http://lists.mpegif.org/mailman/listinfo/mp4-tech > +> > +> 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 > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 STuccitto chipwrights.com Mon Feb 23 11:06:01 2004 From: STuccitto chipwrights.com (Tuccitto, Sal) Date: Mon Feb 23 11:12:54 2004 Subject: [Mp4-tech] MP4 file format? Message-ID: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> Will, The .mp4 file format is described in two places: 1. ISO/IEC 14496-1 available from ansi.org 2. Inside QuickTime: QuickTime File Format available from apple.com Hope this helps, Sal Tuccitto Chipwrights, Inc. -----Original Message----- From: William Tsang{RPI Alum} [mailto:tsangw@alum.rpi.edu] Sent: Monday, February 23, 2024 4:00 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] MP4 file format? Hi all I would like to ask if there are any sites that explain the .mp4 file format? Not just the structure of a .mp4 file, but like telling you from what bytes represent what kind of information...etc. I know .mp4 is not a simpel video file but instead a file container that have both video and audio files inside it. I am trying to write a function that will parse the .mp4 file and locate the video & audio data. But i can't find the .mp4 file header anywhere.....:( Thanks in advance guys !!!!!! Will _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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 mykim us.ibm.com Mon Feb 23 11:49:32 2004 From: mykim us.ibm.com (mykim@us.ibm.com) Date: Mon Feb 23 14:04:39 2004 Subject: [Mp4-tech] MPEG4 scene and XMT In-Reply-To: <20040223104506.WUKR11861.fep06-svc.tim.it@localhost> Message-ID: Hi, As we responded to you on the alphaworks forum where you posted similar questions, we do not support "pause" in the toolkit. The only pause you can do is in the player at the entire scene not on individual streams. Regards, Michelle Dr. Michelle Y. Kim, IBM T. J. Watson Research Center Manager, Composite Media Technologies Group mykim@us.ibm.com (e-mail) (914) 784-7709 (voice) (914) 784-7455 (fax) Sent by: mp4-tech-bounces@lists.mpegif.org 02/23/2004 05:45 AM Please respond to gianni81 To: cc: Subject: [Mp4-tech] MPEG4 scene and XMT Good morning. I am realizing MPEG4 scenes through the IBM toolkit; my problem is to manage the audio and video in the scene.Can I stop/play the video in the scene? I am searching a particular tag for this! Can you help me? _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech 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/20040223/23d2aee1/attachment.html From gianni81 tim.it Mon Feb 23 18:52:16 2004 From: gianni81 tim.it (gianni81@tim.it) Date: Mon Feb 23 14:07:02 2004 Subject: [Mp4-tech] MPEG4 Message-ID: <20040223175216.BJFK1451.fep06-svc.tim.it@localhost> Good evening. Do you know tool to realize MPEG4 scene 3D? thanks From albahi_barcha yahoo.fr Tue Feb 24 10:43:11 2004 From: albahi_barcha yahoo.fr (=?iso-8859-1?q?Guemir=20Omar?=) Date: Tue Feb 24 08:54:47 2004 Subject: [Mp4-tech] S-VOP In-Reply-To: Message-ID: <20040224094311.2388.qmail@web25204.mail.ukl.yahoo.com> hello every body, is there somme one who can give me how te build S-VOP from a vid?o sequence. the technique! thanks, Yahoo! Mail - Votre e-mail personnel et gratuit qui vous suit partout ! Cr?ez votre adresse sur http://mail.yahoo.fr -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040224/68630f99/attachment.html From tsangw alum.rpi.edu Tue Feb 24 10:13:57 2004 From: tsangw alum.rpi.edu (William Tsang{RPI Alum}) Date: Tue Feb 24 08:57:07 2004 Subject: [Mp4-tech] MP4 file format? In-Reply-To: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> References: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> Message-ID: <403AB365.1000302@alum.rpi.edu> Thanks Sal & Mike for the replies. I am looking at the QuickTime File Format now, hope that will help me to prase thru MP4 soon :) By the way, is it true that the ISO/IEC 14496-14 is not free to download anymore? thanks all Will Tuccitto, Sal wrote: >Will, > >The .mp4 file format is described in two places: > >1. ISO/IEC 14496-1 available from ansi.org >2. Inside QuickTime: QuickTime File Format available from apple.com > >Hope this helps, > >Sal Tuccitto >Chipwrights, Inc. > >-----Original Message----- >From: William Tsang{RPI Alum} [mailto:tsangw@alum.rpi.edu] >Sent: Monday, February 23, 2024 4:00 AM >To: mp4-tech@lists.mpegif.org >Subject: [Mp4-tech] MP4 file format? > > >Hi all >I would like to ask if there are any sites that explain the .mp4 file >format? Not just the structure of a .mp4 file, but like telling you >from what bytes represent what kind of information...etc. >I know .mp4 is not a simpel video file but instead a file container that >have both video and audio files inside it. >I am trying to write a function that will parse the .mp4 file and locate > the video & audio data. But i can't find the .mp4 file header >anywhere.....:( Thanks in advance guys !!!!!! >Will > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 f.fakhrieh ece.ut.ac.ir Tue Feb 24 12:56:52 2004 From: f.fakhrieh ece.ut.ac.ir (f.fakhrieh@ece.ut.ac.ir) Date: Tue Feb 24 08:58:56 2004 Subject: [Mp4-tech] Mpeg-j and IBM toolkit Message-ID: <1602.194.225.68.93.1077614812.squirrel@shahab.ut.ac.ir> dear all, I am looging for a way to create a MP4 content concluding Mpeg-j byte code can any body help me From saradhidv esntechnologies.co.in Tue Feb 24 18:03:25 2004 From: saradhidv esntechnologies.co.in (Vijayasaradhi D.) Date: Tue Feb 24 09:00:55 2004 Subject: [Mp4-tech] Best DCT algorithm ?????. Message-ID: <1118873EE1755348B4812EA29C55A9721281BA@esnmail.esntechnologies.co.in> Dear All, I want to know which algorithm was best in terms of calculations and accuracy to implement forward DCT in my Video compression project. What are the algorithms presently implemented in standard open source implementations of video compression standards like H.263 / Mpeg2/ Mpeg4. Thanks in advance, Regards, Saradhi. From bobocreative yahoo.com.cn Tue Feb 24 06:14:02 2004 From: bobocreative yahoo.com.cn (Woo John) Date: Tue Feb 24 10:40:55 2004 Subject: [Mp4-tech] mismatch control in 1st method(MPEG) quantisation Message-ID: <20040224141402.65359.qmail@web15202.mail.bjs.yahoo.com> Mismatch control is enabled in MPEG quantisation for both Intra and Inter blocks(Please refer ISO/IEC 14496-2 subclass 7.4.4.5 and ms/momusys reference code). My questions: 1. In some implementations such as xvid and skal, mismatch control is only enabled in inter blocks(MPEG quant method) while not implemented in intra blocks. Why? 2. Why there is a mismatch control in quantisation? Thank you! ===== Zilong Wu bobocreative@yahoo.com.cn __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools From jkan sei.ecnu.edu.cn Wed Feb 25 17:35:58 2004 From: jkan sei.ecnu.edu.cn (Kan Jiang) Date: Wed Feb 25 09:14:16 2004 Subject: [Mp4-tech] Who can give me any suggestions on hardware mpeg4 codec? Message-ID: <000801c3fb82$c635f110$6a01a8c0@KANJIANG> I'm now working on an embedded digital VCR and need a hardware codec to handle video compression in MPEG4 standards. I have no experience on image or video, so I hope someone can give some help and introduce me some hardware MPEG4 codecs which are steady and convenient to use. Best regards, Kan Jiang jkan@sei.ecnu.edu.cn -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040225/b56d9d0b/attachment.html From singer apple.com Tue Feb 24 19:03:39 2004 From: singer apple.com (Dave Singer) Date: Wed Feb 25 09:15:22 2004 Subject: [Mp4-tech] MP4 file format? In-Reply-To: <403AB365.1000302@alum.rpi.edu> References: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> <403AB365.1000302@alum.rpi.edu> Message-ID: At 10:13 AM +0800 2/24/04, William Tsang{RPI Alum} wrote: >Thanks Sal & Mike for the replies. >I am looking at the QuickTime File Format now, hope that will help >me to prase thru MP4 soon :) >By the way, is it true that the ISO/IEC 14496-14 is not free to >download anymore? >thanks all >Will The QuickTime file format is remarkably similar but is NOT the same as MP4. You cannot, for example, rename files between the two and have it work. Was part 14 ever free to download? > >Tuccitto, Sal wrote: > >>Will, >> >>The .mp4 file format is described in two places: >> >>1. ISO/IEC 14496-1 available from ansi.org >>2. Inside QuickTime: QuickTime File Format available from apple.com >> >>Hope this helps, >> >>Sal Tuccitto >>Chipwrights, Inc. >> >>-----Original Message----- >>From: William Tsang{RPI Alum} [mailto:tsangw@alum.rpi.edu] >>Sent: Monday, February 23, 2024 4:00 AM >>To: mp4-tech@lists.mpegif.org >>Subject: [Mp4-tech] MP4 file format? >> >> >>Hi all >>I would like to ask if there are any sites that explain the .mp4 >>file format? Not just the structure of a .mp4 file, but like >>telling you from what bytes represent what kind of >>information...etc. >>I know .mp4 is not a simpel video file but instead a file container >>that have both video and audio files inside it. >>I am trying to write a function that will parse the .mp4 file and >>locate the video & audio data. But i can't find the .mp4 file >>header anywhere.....:( Thanks in advance guys !!!!!! >>Will >> >>_______________________________________________ >>Mp4-tech mailing list >>Mp4-tech@lists.mpegif.org >>http://lists.mpegif.org/mailman/listinfo/mp4-tech >> >>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 >>_______________________________________________ >>Mp4-tech mailing list >>Mp4-tech@lists.mpegif.org >>http://lists.mpegif.org/mailman/listinfo/mp4-tech >> >>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 >> >> > > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 tsangw alum.rpi.edu Wed Feb 25 11:58:52 2004 From: tsangw alum.rpi.edu (William Tsang{RPI Alum}) Date: Wed Feb 25 09:16:38 2004 Subject: [Mp4-tech] MP4 file format? In-Reply-To: References: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> <403AB365.1000302@alum.rpi.edu> Message-ID: <403C1D7C.1060608@alum.rpi.edu> Dave Singer wrote: > The QuickTime file format is remarkably similar but is NOT the same as > MP4. You cannot, for example, rename files between the two and have > it work. > > Was part 14 ever free to download? Yea, i was reading the QuickTime file format doc and found out it's not really helping for me to parse thru a .mp4 file. Somehow, i just can't find the any similar atom tags that's described in the Quicktime file format doc. The .mp4 clip i created with a software call "MPEG4 Direct Maker" is able to playback with Quicktime player, so i guess that means that the .mp4 clip i created is using the ISO MP4 file format, otherwise, the QuickTime player won't play it right? I also checked the price for the part14 doc and it's just too expensive to even think about it. Anyone can point me some more direction of what i can do here? thanks Will P.S.:I remembered someone sent me an email asking me where to find the Quicktime doc too, here is the link http://developer.apple.com/documentation/quicktime/FileFormatSpecification-date.html From veerabharathi_v yahoo.com Tue Feb 24 21:10:28 2004 From: veerabharathi_v yahoo.com (Veerabharathi) Date: Wed Feb 25 09:17:40 2004 Subject: [Mp4-tech] (no subject) Message-ID: <20040225051028.16234.qmail@web40707.mail.yahoo.com> Hi all, Can somebody tell me how to compile the MPEG 4 BSAC Audio decoder. it complains of some inclusion of *.h files missing. its clearly said in one of the readme's that some lib files need to be taken from ISO site... but i am unable to trace it. Please help me. Thanks & rgds, Veerabharathi.V --------------------------------- Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040224/9a1df6c1/attachment.html From ersin.esen bilten.metu.edu.tr Wed Feb 25 17:47:04 2004 From: ersin.esen bilten.metu.edu.tr (Ersin Esen) Date: Wed Feb 25 17:35:37 2004 Subject: [Mp4-tech] a proprietary codec: VP6.2 Message-ID: <047c01c3fbb6$9d8785b0$6c0c10ac@bilten.metu.edu.tr> As far as I follow the list, there was no discussion on the proprietary codec of On2, VP6.2. They claim to have better performance with respect to even H.264. The results they have posted on their webpages, http://www.on2.com/vp6_psnr.php3?graph=Football_h264 http://www.on2.com/vp6_psnr.php3?graph=Salmon indicate quite significant improvements. I wonder the core technology they are using. Is it wavelet-based or another technoloy is used? Does anyone in this list have an idea on this issue? Best regards. -ersin esen tubitak bilten -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040225/0d027481/attachment.html From fful conncoll.edu Wed Feb 25 12:14:33 2004 From: fful conncoll.edu (Frank Fulchiero) Date: Wed Feb 25 17:38:16 2004 Subject: [Mp4-tech] Re: Who can give me any suggestions on hardware mpeg4 codec? In-Reply-To: <200402251702.i1PH0dun004088@lists1.magma.ca> References: <200402251702.i1PH0dun004088@lists1.magma.ca> Message-ID: <1469695B-67B6-11D8-97A0-000A95DBAD56@conncoll.edu> The two hardware codecs I know about are the VBrick http://www.vbrick.com/products/vbxcast.asp and the JVC. go to http://pro.jvc.com/prof/main.jsp and do a search on DM-NC40 There's probably other ones too... Frank Fulchiero Digital Media Specialist Connecticut College > I'm now working on an embedded digital VCR and need a hardware codec to > handle video compression in MPEG4 standards. I have no experience on > image or video, so I hope someone can give some help and introduce me > some hardware MPEG4 codecs which are steady and convenient to use. From singer apple.com Wed Feb 25 20:15:13 2004 From: singer apple.com (Dave Singer) Date: Wed Feb 25 17:40:22 2004 Subject: [Mp4-tech] MP4 file format? In-Reply-To: <403C1D7C.1060608@alum.rpi.edu> References: <93A4BBB9515ED411AE9D00508BD955A5A01D59@intranet> <403AB365.1000302@alum.rpi.edu> <403C1D7C.1060608@alum.rpi.edu> Message-ID: At 11:58 AM +0800 2/25/04, William Tsang{RPI Alum} wrote: >Dave Singer wrote: > >>The QuickTime file format is remarkably similar but is NOT the same >>as MP4. You cannot, for example, rename files between the two and >>have it work. >> >>Was part 14 ever free to download? > >Yea, i was reading the QuickTime file format doc and found out it's >not really helping for me to parse thru a .mp4 file. Somehow, i >just can't find the any similar atom tags that's described in the >Quicktime file format doc. The .mp4 clip i created with a software >call "MPEG4 Direct Maker" is able to playback with Quicktime player, >so i guess that means that the .mp4 clip i created is using the ISO >MP4 file format, otherwise, the QuickTime player won't play it right? >I also checked the price for the part14 doc and it's just too >expensive to even think about it. Anyone can point me some more >direction of what i can do here? thanks >Will I have written chapters in books and presentations, but they intentionally don't duplicate the standard. However, the basic movie atom structures are almost identical (MP4 doesn't use data handlers, for example). However, both MP4 and QT allow atoms that the other doesn't use, and of course MP4 has code-points specific to mpeg-4. > >P.S.:I remembered someone sent me an email asking me where to find >the Quicktime doc too, here is the link >http://developer.apple.com/documentation/quicktime/FileFormatSpecification-date.html -- David Singer Apple Computer/QuickTime From vhsu itri.org.tw Thu Feb 26 08:02:40 2004 From: vhsu itri.org.tw (Vhsu) Date: Thu Feb 26 09:05:53 2004 Subject: [Mp4-tech] Mismatch Control in MPEG-4 Message-ID: <002f01c3fbfb$da1024c0$bc71608c@11086055392> Dear all, I have an unknown about mismatch control in MPEG-4 video. As I know, mismatch control is used to avoid mismatch condition of IDCT output between encoder and decoder, while small non-zero input of IDCT may introduce zero output. 14496-2 suggests a rule to do that, which is the same as 13818-2 did. If both encoder and decoder have same processing precision, no such problem occurs, right? Would you please give me an example to explain that? Thanks! Vincent Hsu N100/CCL/ITRI 03-5914810 vhsu@itri.org.tw From bfelts envivio.com Wed Feb 25 19:30:10 2004 From: bfelts envivio.com (Boris Felts) Date: Thu Feb 26 09:10:11 2004 Subject: [Mp4-tech] a proprietary codec: VP6.2 In-Reply-To: <0ADFC3A378B7B2408351059DCC465DAD7E32E8@xchange.sfo.envivio.com> Message-ID: <0ADFC3A378B7B2408351059DCC465DAD4308A1@xchange.sfo.envivio.com> I don't think this means really anything... 1- we had taken the exact same input file from their previous announcements, calculated the PSNR with H264 and obtained better results, contrarily to what was published. 2- there is no indication of H264 profile used 3- it is only addressing progressive content (for which optimizations are much easier) 4- VP6.2 has probably a lot of pre and post-processing. None is used with the reference H264 implementation. 5- the H264 reference codec is probably not as optimized as VP6. Basically, they are comparing the results of (prefilter+ optimized codec+postfilter) to (non-optimized codec) I don't think we can draw any conclusion from that. As an example, MPEG-2 started with bit rate around 5 to 6Mbps. We are now down to 2 Mbps in some cases. The syntax and the technology has not changed, but a lot of refinements (bit alllocation, pre and post processing) has been introduced since the first codec release which explains this overall reduction. You will also find a significant difference between highly optimized MPEG-2 encoders and the MPEG-2 reference model. I am not denying the visual quality of their implementation, but comparing to H264 in these conditions to VP6.2 is not relevant. Boris Felts Envivio -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of Ersin Esen Sent: Wednesday, February 25, 2024 7:47 AM To: MP4-Tech@lists.mpegif.org Subject: [Mp4-tech] a proprietary codec: VP6.2 As far as I follow the list, there was no discussion on the proprietary codec of On2, VP6.2. They claim to have better performance with respect to even H.264. The results they have posted on their webpages, http://www.on2.com/vp6_psnr.php3?graph=Football_h264 http://www.on2.com/vp6_psnr.php3?graph=Salmon indicate quite significant improvements. I wonder the core technology they are using. Is it wavelet-based or another technoloy is used? Does anyone in this list have an idea on this issue? Best regards. -ersin esen tubitak bilten -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040225/ab0c6532/attachment.html From getsunil_6 yahoo.co.in Thu Feb 26 04:19:08 2004 From: getsunil_6 yahoo.co.in (=?iso-8859-1?q?venkata=20sunil?=) Date: Thu Feb 26 09:13:24 2004 Subject: [Mp4-tech] Context-based Arthmetic shape coding In-Reply-To: <200402251700.i1PH0duk004088@lists1.magma.ca> Message-ID: <20040226041908.69570.qmail@web8105.in.yahoo.com> Good morning everyone, I want to know the details of the Context-based Arthmetic shape coding.Can any one help in knowing the CAE(Context-based Arthmetic Encoder) Algorithm.Thank you in advance. WITH ALL HAPPYNESS urs sunil Yahoo! India Insurance Special: Be informed on the best policies, services, tools and more. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040226/78e0c286/attachment.html From dhiraj motechsoftware.com Thu Feb 26 10:21:03 2004 From: dhiraj motechsoftware.com (Dhiraj Nadgouda) Date: Thu Feb 26 09:15:59 2004 Subject: [Mp4-tech] H.264 Test Streams (Baseline Profile) Message-ID: <001001c3fc24$24afa960$cd0b7d0a@motechsoftware.com> Skipped content of type multipart/alternativeFrom ssingh neomagic.com Thu Feb 26 16:48:57 2004 From: ssingh neomagic.com (Shailendra Singh) Date: Thu Feb 26 09:18:33 2004 Subject: [Mp4-tech] Sample MP4 file In-Reply-To: <200402251701.i1PH0dul004088@lists1.magma.ca> References: <200402251701.i1PH0dul004088@lists1.magma.ca> Message-ID: <403DD621.6060705@neomagic.com> Hi , (1) Is there a site where I can find a sample MP4 file which conforms to 14496-1 specification ? (2) If a file has .mp4 extension, is it valid to assume that it is a MP4 file (and therefore by definition conforming to 14496-1 ) ? The context for this question is that I came across a couple of files with .mp4 extension containing audio and video data which were - played by QuickTime Player (Version 6.5), both audio and video - played by DivX Player 2.5.2 but video only (I see a warning which says "This file contains unknown audio data" and further complains about "Audio data : Tag 5376") - rejected by Windows Media player (latest version, version 9), warning about unrecognized file extension - attempted to play by Real Player but RealPlayer fails ( searches for a software update to enable playing this .mp4 file but fails to find one) (3) I also recently heard that RealPlayer does not play MP4 file with hint tracks, MP4 files without hint tracks are decodable. Is this correct ? Regards, Shailendra From RaviprakashN KPITCummins.com Thu Feb 26 19:37:03 2004 From: RaviprakashN KPITCummins.com (Raviprakash Nayak) Date: Fri Feb 27 09:17:39 2004 Subject: [Mp4-tech] Basics of audio Message-ID: <69595093233BB547BB70CF5E492B63F2043F773D@sohm.kpit.com> Can any one give me a brief introduction from the sampling to encoder. How the LPC indices is calculated in CELP? -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040226/d0398112/attachment.html From ssingh neomagic.com Thu Feb 26 20:05:26 2004 From: ssingh neomagic.com (Shailendra Singh) Date: Fri Feb 27 09:21:16 2004 Subject: [Mp4-tech] H.264 Test Streams (Baseline Profile) In-Reply-To: <001001c3fc24$24afa960$cd0b7d0a@motechsoftware.com> References: <001001c3fc24$24afa960$cd0b7d0a@motechsoftware.com> Message-ID: <403E042E.1040505@neomagic.com> Hi Dhiraj, You should look at draft_conformance folder (ftp://ftp.imtc-files.org/jvt-experts/draft_conformance/) and not the bitstream_exchange folder. Also, you will find the information you need for testing a baseline decoder in the document ftp://ftp.imtc-files.org/jvt-experts/2003_12_Waikoloa/JVT-J011.doc . You would also find helpful information on the JVT mailing list . You can sign-up for the mailing list by visiting http://mail.imtc.org/cgi-bin/lyris.pl?enter=jvt-experts Regards, Shailendra Dhiraj Nadgouda wrote: > Hi All, > We had developed a H.264 video decoder (Baseline profile). We need to > perform Standard Conformance Testing. > Can anyone tell me how many baseline profile H.264 test streams are > available, for conformance testing?? And the URLs as well. > I have downloaded all Baseline streams in Bitstream exchange folder of > JVT experts. But I couldn'tfind many Baseline profile streams > mentioned in the Excel sheet JVT-bitstream_v19.xls. Where can I find > them ?? > Thanks, > Dhiraj. > >------------------------------------------------------------------------ > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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/20040226/430be5f9/attachment.html From garysull windows.microsoft.com Thu Feb 26 09:51:06 2004 From: garysull windows.microsoft.com (Gary Sullivan) Date: Fri Feb 27 09:25:31 2004 Subject: [Mp4-tech] H.264 Test Streams (Baseline Profile) Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246064AD3A1@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Skipped content of type multipart/alternative From hans-juergen.bardenhagen arcor.de Thu Feb 26 18:31:14 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Feb 27 09:29:06 2004 Subject: [Mp4-tech] Sample MP4 file In-Reply-To: <403DD621.6060705@neomagic.com> Message-ID: <93$mMumETuB@ID-50271.user.uni-berlin.de> Hi Shailendra, on 26.02.04, 16:18 local time (received 26.02.04, 18:48 GMT+1) you wrote: > The context for this question is that I came across a couple of files > with .mp4 extension containing audio and video data which were > - played by QuickTime Player (Version 6.5), both audio and video > - played by DivX Player 2.5.2 but video only (I see a warning > which says "This file contains unknown audio data" and further > complains about "Audio data : Tag 5376") The DivX Player does not know AAC, only MP3 (d'oh!), but this is standard-compliant, so it can call itself a "MPEG-4 Player". Same is true for the currently available DVD players with that lable, they all don't know AAC audio, only MP3 combined with MPEG-4 video within an AVI container (double d'oh!) ;-) > - rejected by Windows Media player (latest version, version 9), > warning about unrecognized file extension WMP doesn't know anything about MP4 by itself, you have to install a DirectShow filter or a plugin for it, e.g. 3ivx, mpegable, LSX-MPEG Player or EnvivioTV. > - attempted to play by Real Player but RealPlayer fails > (searches for a software update to enable playing this .mp4 file but > fails to find one) Until now the free RealPlayer doesn't know the MP4 container either, but it is rumoured that the commercial "Gold" edition will have this feature which should be released soon. > (3) I also recently heard that RealPlayer does not play MP4 file with > hint tracks, MP4 files without hint tracks are decodable. Is this > correct ? Hmm, don't know about that issue, sorry. Maybe this refers to the open source Helix Server application by RealNetworks... By the way, I created a short table with available freeware MPEG-4 players for Windows in the Wiki of Audiocoding.com recently, maybe this is of some help for you: http://www.audiocoding.com/wiki/index.php?page=MPEG-4+players ZZee ya, Hans-J?rgen From singer apple.com Thu Feb 26 23:31:48 2004 From: singer apple.com (Dave Singer) Date: Fri Feb 27 09:32:31 2004 Subject: [Mp4-tech] Sample MP4 file In-Reply-To: <403DD621.6060705@neomagic.com> References: <200402251701.i1PH0dul004088@lists1.magma.ca> <403DD621.6060705@neomagic.com> Message-ID: At 4:48 PM +0530 2/26/04, Shailendra Singh wrote: >Hi , > (1) Is there a site where I can find a sample MP4 file which >conforms to 14496-1 specification ? no, but they are easily made with a lot of tools. isma has a conformance suite. > (2) If a file has .mp4 extension, is it valid to assume that it >is a MP4 file (and therefore by definition conforming to 14496-1 ) ? generally yes >The context for this question is that I came across a couple of >files with .mp4 extension containing audio and video data which were > - played by QuickTime Player (Version 6.5), both audio and video we'll only play standard mp4 if it comes in with as an mp4 file, I think > - played by DivX Player 2.5.2 but video only (I see a warning >which says "This file contains unknown audio data" and further >complains about "Audio data : Tag 5376") don't know what it doesn't like here > - rejected by Windows Media player (latest version, version 9), >warning about unrecognized file extension I don't believe microsoft has committed to interoperable multimedia > - attempted to play by Real Player but RealPlayer fails ( >searches for a software update to enable playing this .mp4 file but >fails to find one) Real until recently was using an Envivio plug-in which was until recently in their automatic download program, but I believe no longer is. > >(3) I also recently heard that RealPlayer does not play MP4 file >with hint tracks, MP4 files without hint tracks are decodable. Is >this correct ? hit tracks are for servers but are designed so that local playback should not be affected by them. > >Regards, >Shailendra > > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >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 acastera prodys.net Fri Feb 27 10:40:37 2004 From: acastera prodys.net (Alejandro Castera) Date: Fri Feb 27 09:35:27 2004 Subject: [Mp4-tech] MP4 to ASF Message-ID: <000f01c3fd15$c1dd1d20$4700000a@DOMINO.local> I'm sending this from PRODYS, a member of MPEG-4 Industry Forum. Searching the Web I found the following page http://lists.mpegif.org/pipermail/mp4-tech/2003-December/002980.html where I got to know that someone else in the past had the same problem I have know: I need to encapsulate an MPEG-4 compliant video stream as an Microsoft ASF file and I cannot find a straight forward solution for it. Apparently people ran into this very same problem last year. My question is: is there any solution to the problem out there? In that case I would really appreciate if you could give me some hints regarding this issue! Thanks a lot ! Alejandro Castera PRODYS (Procesamiento Digital y Sistemas SL.) ( +34 91 689 68 80 (FAX: +34 91 694 37 77) * Trigo, 54-2?, Leganes 28914, MADRID (SPAIN) @ 8 -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040227/7f89f272/attachment-0001.html From murali.babu ittiam.com Fri Feb 27 18:39:11 2004 From: murali.babu ittiam.com (Murali Babu) Date: Fri Feb 27 09:38:53 2004 Subject: [Mp4-tech] MP4 file format Message-ID: <45A1F95BB9D7D84FAB0A1EB4D67EEF9691F0E2@is01ex01.ittiam.com> Hi, Where can I find details about MP4 file format supporting MPEG-4 and G.726 codec? Iam interested in knowing the header format for this combination? Is this combination of codecs supported in other formats like ASF etc? If so please let me know where I can find information about the header format Thanks Murali From pmiechi argentina.com Fri Feb 27 13:21:51 2004 From: pmiechi argentina.com (Pablo Miechi) Date: Fri Feb 27 11:52:10 2004 Subject: [Mp4-tech] MP4 streaming Message-ID: <002d01c3fd4d$cf61d430$d7e4f4d8@frodo> Hi all, for my final thesis, I'm developing an RTP/UDP video server under VC++. I would like to use MP4 video compression, but cannot find information about de CODEC (XVID, DIVX) output. Can I just put what the compressor gives me into the RTP payload (RFC 3640 said that) or I need to add an extra header?? Where can I find info about MP4 codec output structure??? Thanks.. Pablo Miechi --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.585 / Virus Database: 370 - Release Date: 11/02/2024 -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040227/edd114ca/attachment.html From tomotohara yahoo.com Fri Feb 27 09:22:41 2004 From: tomotohara yahoo.com (Tomo) Date: Sun Feb 29 17:23:20 2004 Subject: [Mp4-tech] please Message-ID: <20040227172241.31678.qmail@web10502.mail.yahoo.com> Hi. I have several requests, which I think reasonable to ask. 1. Please do not attach any files or anything when sending email to this email address. First, there is always possible virus threat, and second, large attachment crog mail holder (disk space). 2. Please avoid using non ascii (8-bit) text even signature. I know some people use 16-bit charactor for signature etc., but even today not all email viewer does not show 16-bit charactor right. You may say it is my issue, but if such charactor appears on subject or other part of email, it is possible something wrong thing happening. 3. If I may, please avoid using fancy background image/color with the email. Sincerely ===== Tomo From skb3 buffalo.edu Fri Feb 27 13:56:57 2004 From: skb3 buffalo.edu (Saurav K. Bandyopadhyay) Date: Sun Feb 29 17:27:25 2004 Subject: [Mp4-tech] MPEG4 codec for Wavelets Message-ID: <1077908217.403f92f9b9e3b@mail3.buffalo.edu> Hello everybody, I needed help regarding the configuration file for Wavelet based texture coding using MPEG4. Is it possible to send sample configuration files for DWT and SA-DWT used in MPEG4 codec? I have tried the example VTC configuration file given in the README file. Unfortunately, it doesn't work. Thanks in advance. Saurav From skb3 buffalo.edu Fri Feb 27 14:43:35 2004 From: skb3 buffalo.edu (Saurav K. Bandyopadhyay) Date: Sun Feb 29 17:29:47 2004 Subject: [Mp4-tech] Wavelet based texture Coding using MPEG4 Message-ID: <1077911015.403f9de767970@mail3.buffalo.edu> Hello everybody, I needed help regarding the configuration file for Wavelet based texture coding using MPEG4. Is it possible to send sample configuration files for DWT and SA-DWT used in MPEG4 codec? I have tried the sample VTC configuration file given in the README file. Unfortunately, it doesn't work. I will input an alpha map and a Image file (Y comp) and it will give me the Wavelet Coded output. Thanks in advance. Saurav From skb3 buffalo.edu Fri Feb 27 15:36:12 2004 From: skb3 buffalo.edu (Saurav K. Bandyopadhyay) Date: Sun Feb 29 17:32:52 2004 Subject: [Mp4-tech] MPEG4 (Texture Coding using SA-DWT ) Message-ID: <1077914172.403faa3cbf945@mail3.buffalo.edu> Hello everybody, I needed help regarding the configuration file for Wavelet based texture coding using MPEG4. Is it possible to send sample configuration files for DWT and SA-DWT used in MPEG4 codec (Version 2)? I have tried the example VTC configuration file given in the README file. Unfortunately, it doesn't work. Thanks in advance. Saurav From craig pcube.com Fri Feb 27 14:03:28 2004 From: craig pcube.com (Craig Birkmaier) Date: Sun Feb 29 17:36:54 2004 Subject: [Mp4-tech] MP4 to ASF In-Reply-To: <000f01c3fd15$c1dd1d20$4700000a@DOMINO.local> References: <000f01c3fd15$c1dd1d20$4700000a@DOMINO.local> Message-ID: At 10:40 AM +0100 2/27/04, Alejandro Castera wrote: >I'm sending this from PRODYS, a member of MPEG-4 Industry Forum. > > Searching the Web I found the following page >http://lists.mpegif.org/pipermail/mp4-tech/2003-December/002980.html where >I got to know that someone else in the past had the same problem I >have know: I need to encapsulate an MPEG-4 compliant video stream as >an Microsoft ASF file and I cannot find a straight forward solution >for it. > >Apparently people ran into this very same problem last year. >My question is: is there any solution to the problem out there? >In that case I would really appreciate if you could give me some >hints regarding this issue! > I think they call it Windows Media 9. ;-( Regards Craig From mafie att.net Fri Feb 27 21:10:15 2004 From: mafie att.net (mafie@att.net) Date: Sun Feb 29 17:39:22 2004 Subject: [Mp4-tech] System-on-Chip (SoC) Conference Message-ID: <022720042110.19335.10f5@att.net> http://www.savantcompany.com/SoC_Conf_April_2004/SoC.htm > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > 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 -------------- A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 0 bytes Desc: not available Url : /pipermail/mp4-tech/attachments/20040227/42345c92/attachment.bin -------------- next part -------------- Skipped content of type multipart/alternative From f.fakhrieh ece.ut.ac.ir Sun Feb 29 04:38:28 2004 From: f.fakhrieh ece.ut.ac.ir (f.fakhrieh@ece.ut.ac.ir) Date: Sun Feb 29 17:42:53 2004 Subject: [Mp4-tech] Mpeg-j and IBM toolkit for mpeg j Message-ID: <3341.195.219.128.142.1078016908.squirrel@shahab.ut.ac.ir> Hi all, Can any body say me If or if not exist a way two use ibm toolkit for create mpeg-j resource From f.fakhrieh ece.ut.ac.ir Sun Feb 29 04:40:14 2004 From: f.fakhrieh ece.ut.ac.ir (f.fakhrieh@ece.ut.ac.ir) Date: Sun Feb 29 17:45:18 2004 Subject: [Mp4-tech] IM1 Message-ID: <3357.195.219.128.142.1078017014.squirrel@shahab.ut.ac.ir> can any body say me what is IM1? From mikael sevenier.com Sun Feb 29 15:11:24 2004 From: mikael sevenier.com (Mikael Bourges-Sevenier) Date: Mon Mar 1 03:08:31 2004 Subject: [Mp4-tech] IM1 In-Reply-To: <3357.195.219.128.142.1078017014.squirrel@shahab.ut.ac.ir> Message-ID: <050101c3ff19$5e71d6d0$6401a8c0@MdgMerlin> That's MPEG-4 reference software. Historically, it means Implementation Model 1 but there hasn't been any other implementations and it became the reference software. It is normative and Part 5 of MPEG-4 specifications. Best, Mike > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org] On Behalf Of > f.fakhrieh@ece.ut.ac.ir > Sent: Saturday, February 28, 2024 5:10 PM > To: Mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] IM1 > > > can any body say me what is IM1? > > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-> tech > > 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