From tm991058 fh-stpoelten.ac.at Thu May 1 18:48:42 2003 From: tm991058 fh-stpoelten.ac.at (Karin Liebmann) Date: Wed Jul 30 14:10:21 2003 Subject: [M4IF Technotes] BIFStext Message-ID: <004c01c30ff9$24b634a0$0100a8c0@schaf> Hello everyone, I have a question concerning BIFStext... I would like to know if BIFStext is part of the MPEG-4 standard.. because I didn't find any statement about it in the specification documents from the MPEG homepage. The standardized methode to create a mp4 szene with 3D, video and audio content would be: 3D files as a x3d file - converting the x3d to xmt - including video and audio - converting to a mp4 scene.. the methode I used with my project was: 3D files as a vrml file- converting the vrml file to BIFStext- including video and audio streams- converting to a mp4 szene with the help of the mp4tool.. Is it right that this methode and the BIFStext is not MPEG-4 standard conform? But it works! Is BIFStext a solution created by ENST?? I used the second methode because I didn't find enough informations about converting X3D to XMT... Are this the only two methodes to create a mp4 scene? I would be really glad to hear from someone of you! Thanks very much in advance! regards, Karin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030501/c442791d/attachment.html From mikael sevenier.com Thu May 1 10:49:59 2003 From: mikael sevenier.com (Mikael Bourges-Sevenier) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] BIFStext In-Reply-To: <004c01c30ff9$24b634a0$0100a8c0@schaf> Message-ID: <012401c31001$b7b06bb0$6701a8c0@Merlin> Hi Karin, -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of Karin Liebmann Sent: Thursday, May 01, 2024 8:49 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] BIFStext Hello everyone, I have a question concerning BIFStext... I would like to know if BIFStext is part of the MPEG-4 standard.. because I didn't find any statement about it in the specification documents from the MPEG homepage. [Mikael Bourges-Sevenier] No it is not. It's a ad-hoc format derived from VRML 2.0 we used long before XMT was specified. XMT-A is part of MPEG-4. The standardized methode to create a mp4 szene with 3D, video and audio content would be: 3D files as a x3d file - converting the x3d to xmt - including video and audio - converting to a mp4 scene.. [Mikael Bourges-Sevenier] Yes but be careful: originally X3D had 2 DTDs called compact and compromise. Today, X3D has chosen the compact DTD while XMT-A is based on compromise DTD. The compromise DTD was chosen because of its straightforward conversion to XML, which is not the case with the compact DTD. There exists some XSL translators from compact to compromise DTD. Then, you can use XSL translators from XMT-A to BifsText and Mp4Enc's scripts; they are in IM1 distribution. the methode I used with my project was: 3D files as a vrml file- converting the vrml file to BIFStext- including video and audio streams- converting to a mp4 szene with the help of the mp4tool.. Is it right that this methode and the BIFStext is not MPEG-4 standard conform? But it works! [Mikael Bourges-Sevenier] It is the right way to do for MPEG-4 reference software (IM1). But it's not the recommended "standard" way to do. Is BIFStext a solution created by ENST?? [Mikael Bourges-Sevenier] No, but note that ENST has also its own BifsText extensions.... Many MPEG companies use a sort of BifsText but as it is a proprietary language, each has made its own extensions. So be careful: they might look the same but they often have their own 'convensions'. I used the second methode because I didn't find enough informations about converting X3D to XMT... Are this the only two methodes to create a mp4 scene? [Mikael Bourges-Sevenier] If you use IM1, create your scene in BifsText, that's pretty simple. Actually, you can use a VRML editor (e.g. VrmlPad) to create your scenes and structure your scene as: 1- list of protos, if any 2- only one top node 3- list of routes, if any Convert URL to object descriptors. Beware of supported audio/video types! Create your Mp4Enc script and you should have your mp4 file. In any case, the recommended practice should be: use an XML editor, create your XMT-A scene and run your encoders. You can do that with IM1 as well by using XSL translators before running the encoders. Hope it helps, Mike I would be really glad to hear from someone of you! Thanks very much in advance! regards, Karin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030501/f78576ca/attachment.html From logic_cad yahoo.com Thu May 1 23:55:57 2003 From: logic_cad yahoo.com (George Wong) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] Non-proprietary MPEG-4 codec Message-ID: <20030502055557.91392.qmail@web21505.mail.yahoo.com> Does anyone know a freeware ISO MPEG-4 codec that is non-proprietary? (.mp4 format) __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From rob.koenen m4if.org Fri May 2 00:16:47 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] Non-proprietary MPEG-4 codec In-Reply-To: <20030502055557.91392.qmail@web21505.mail.yahoo.com> Message-ID: Please see the Resources Section on www.m4if.org Lots of free tools. All of them non-proprietary, in the sense that they are standards-compliant. Rob > -----Original Message----- > From: George Wong [mailto:logic_cad@yahoo.com] > Sent: Thursday, May 01, 2024 22:56 > To: technotes@lists.m4if.org > Subject: [M4IF Technotes] Non-proprietary MPEG-4 codec > > > Does anyone know a freeware ISO MPEG-4 codec that is > non-proprietary? (.mp4 format) > > __________________________________ > Do you Yahoo!? > The New Yahoo! Search - Faster. Easier. Bingo. > http://search.yahoo.com > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technot> es > From korde tataelxsi.co.in Fri May 2 14:01:20 2003 From: korde tataelxsi.co.in (Shrirang Korde) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] MPEG4 video + audio bitstreams Message-ID: <00d401c3107c$d4495270$c314010a@telxsi.com> Hi, Where can I get MPEG4 encoded bitstreams at 15 fps SP, VGA/ CIF along with audio lip synchronized with this 15 fps video. Any audio (PCM , MP3) will do and video frame rate should be less than 20 fps. I require this information urgently. Thanks Regards Shrirang Korde ------------------------------------------------------ korde@tataelxsi.co.in Ph: (O) +91-80-8410148 ext 243 (M) +91-9886017574 ------------------------------------------------------ -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030502/418db5c2/attachment.html From korde tataelxsi.co.in Fri May 2 14:49:23 2003 From: korde tataelxsi.co.in (Shrirang Korde) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] lip synch bit stream Message-ID: <010c01c31083$8a5f7de0$c314010a@telxsi.com> Where can I get SP, VGA/ CIF size MPEG4 video bitstreams at 15 fps along with audio. Lip sync is must. (.mp4, or .avi files) Any audio (PCM, MP3) will do & video frame rate less than 20 fps is reqd. Regards Shrirang Korde -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030502/146dc39f/attachment.html From sps iis.fhg.de Fri May 2 15:13:14 2003 From: sps iis.fhg.de (Ralph Sperschneider) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] MPEG document access (was: Re: I saw your e-mail at M4if technotes.) In-Reply-To: <000801c3106f$985aaf00$540ee69b@kumch> References: <000801c3106f$985aaf00$540ee69b@kumch> Message-ID: <3EB260DA.8030305@iis.fhg.de> ?????? wrote: > Dear Ralph, > > I study MPEG-4 codec. > > On Web Surffing, I found your e-mail and your answer in "where to get > these two ISO/IEC papers?" at M4IF Technotes. > > I need /ISO/IEC JTC1/SC29/WG11, N1473, "Adhoc Group on Core Experiment > on Error Resilience aspects of Mpeg-4 video, Description of Error > Resilience Core Experiments" > /and /ISO/IEC JTC1/SC29/WG11 MPEG96/1492, "Revised Error pattern > Generation Programs for Core Experiments on Error Resilience"./ > > Can you send those papers? According to my notes, there exist the following * input document of the 37th MPEG Meeting: M1492 Revised Error Pattern Generation Programs for Core Experiments on Error Resilience * output documents of the 37th MPEG Meeting: N1473 Description of Core Experiments on error resilience in MPEG-4 video N1477 Ad-hoc group on Core experiments on error resilience in MPEG- 4 video The input documents are not accessable anymore by any means (unless you have a received a copy in earlier times), but you might contact the authors (Toshio Miki, Toshiro Kawahara and Tomoyuki Ohya) from NTT DoCoMo. The output documents are accessible to MPEG members only (none of the mentioned output documents was assigned to be made publicly available). Best regards, Ralph > > Thanks. > > From Kum -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 FhG IIS-A | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:sps@iis.fhg.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From lzm02 mails.tsinghua.edu.cn Fri May 2 22:10:27 2003 From: lzm02 mails.tsinghua.edu.cn (Li Zhengming) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] Who can help me with the yuv codecs? Message-ID: <001101c310ac$33ddf770$3f496fa6@automatihc6u4i> Dear all, I now want to find a fairly advanced yuv codec, which can set parameters easily, that is can change its width and length easily. I have searched in the internet for ages without any satisfying result. Any hint is appreciated by me! Thanks a lot ! ÀîÕùÃ÷ £­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­ £­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­ From oamato wanadoo.fr Fri May 2 16:25:14 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] Multiple inputs AAC encoder ? References: <000801c3106f$985aaf00$540ee69b@kumch> <3EB260DA.8030305@iis.fhg.de> Message-ID: <002f01c310ae$44c040f0$0a00000a@beck> I'm looking for a solution to encode 2 to 8 separate live audio mono signals into MPEG-4 AAC-LC from a single audio board. No matters if it's software or hardware encoding, but the application must be able to produce 8 ISMA compliant MP4 hinted files for further streaming from Apple DSS ( for audio on demand, next step will be live streaming ... ). The best would be for the supplier to also support AAC Low Delay, because we plan to provide low latency applications. Olivier Amato From kapo acroid.com Fri May 2 17:42:21 2003 From: kapo acroid.com (eno kapo) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] any using live mpg4 encoder In-Reply-To: <001101c310ac$33ddf770$3f496fa6@automatihc6u4i> Message-ID: <200305021443.h42EhER13970@lists1.magma.ca> Any one encoding live mp4 streams?.What software hardware are able to encode live mp4? Thanks Eno Acroid.com Brussels -----Original Message----- From: "Li Zhengming" To: "M4if Technotes" Date: Fri, 2 May 2024 21:10:27 +0800 Subject: [M4IF Technotes] Who can help me with the yuv codecs? > Dear all, > > I now want to find a fairly advanced yuv codec, which can set > parameters easily, that is can change its width and length easily. I > have searched in the internet for ages without any satisfying result. > > Any hint is appreciated by me! > > Thanks a lot ! > > ?????? > ?????????????????????????????????????????????????????????????? > > ?????????????????????????????????????????????????????????????????? > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From andrewk vbrick.com Fri May 2 14:18:11 2003 From: andrewk vbrick.com (Andrew Krupiczka) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] any using live mpg4 encoder Message-ID: Eno, You can consider VBrick's hardware encoder www.vbrick.com/vbxcast Regards, Andrew Krupiczka, VBrick -----Original Message----- From: eno kapo [mailto:kapo@acroid.com] Sent: Friday, May 02, 2024 10:42 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] any using live mpg4 encoder Any one encoding live mp4 streams?.What software hardware are able to encode live mp4? Thanks Eno Acroid.com Brussels -----Original Message----- From: "Li Zhengming" To: "M4if Technotes" Date: Fri, 2 May 2024 21:10:27 +0800 Subject: [M4IF Technotes] Who can help me with the yuv codecs? > Dear all, > > I now want to find a fairly advanced yuv codec, which can set > parameters easily, that is can change its width and length easily. I > have searched in the internet for ages without any satisfying result. > > Any hint is appreciated by me! > > Thanks a lot ! > > ?????? > ?????????????????????????????????????????????????????????????? > > ?????????????????????????????????????????????????????????????????? > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From ben interframemedia.com Fri May 2 11:33:12 2003 From: ben interframemedia.com (Ben Waggoner) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] any using live mpg4 encoder In-Reply-To: <200305021443.h42EhER13970@lists1.magma.ca> Message-ID: Eno, The one I've worked with the most is Envivio's, and it worked just great. Ben Waggoner Compressed Video Consulting, Training, and Encoding My Book: Cleaner e-book: Compression Classes at Stanford June 30-July 4 and Aug 11-15 on 5/2/03 7:42, eno kapo at kapo@acroid.com wrote: > Any one encoding live mp4 streams?.What software hardware are able to > encode live mp4? From kapo acroid.com Fri May 2 20:55:33 2003 From: kapo acroid.com (kapo) Date: Wed Jul 30 14:10:22 2003 Subject: [M4IF Technotes] any using live mpg4 encoder References: Message-ID: <005001c310d4$070eafa0$1ab0c1d5@acroid> Yeah but Envivo's prices remain high :) ----- Original Message ----- From: "Ben Waggoner" To: "eno kapo" ; Sent: Friday, May 02, 2024 7:33 PM Subject: Re: [M4IF Technotes] any using live mpg4 encoder > Eno, > > The one I've worked with the most is Envivio's, and it worked just > great. > > > Ben Waggoner > Compressed Video Consulting, Training, and Encoding > > My Book: > Cleaner e-book: > > Compression Classes at Stanford June 30-July 4 and Aug 11-15 > > > > > on 5/2/03 7:42, eno kapo at kapo@acroid.com wrote: > > > Any one encoding live mp4 streams?.What software hardware are able to > > encode live mp4? > > > From ben interframemedia.com Fri May 2 12:00:28 2003 From: ben interframemedia.com (Ben Waggoner) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder In-Reply-To: <005001c310d4$070eafa0$1ab0c1d5@acroid> Message-ID: Kapo, Oh, you want good AND cheap? Good are Envivio and VBrick, and probably others. Cheap is MPEG4IP's live broadcaster, but you'll need to be ready to get your hands dirty compiling code. Ben Waggoner Compressed Video Consulting, Training, and Encoding My Book: Cleaner e-book: Compression Classes at Stanford June 30-July 4 and Aug 11-15 on 5/2/03 10:55, kapo at kapo@acroid.com wrote: > Yeah but Envivo's prices remain high :) From kapo acroid.com Fri May 2 21:05:30 2003 From: kapo acroid.com (kapo) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder References: Message-ID: <000001c310d6$d41f1b40$acb0c1d5@acroid> Ok I see ,thanks for the information. Kind regards ----- Original Message ----- From: "Ben Waggoner" To: "kapo" ; Sent: Friday, May 02, 2024 8:00 PM Subject: Re: [M4IF Technotes] any using live mpg4 encoder > Kapo, > > Oh, you want good AND cheap? Good are Envivio and VBrick, and probably > others. Cheap is MPEG4IP's live broadcaster, but you'll need to be ready to > get your hands dirty compiling code. > > Ben Waggoner > Compressed Video Consulting, Training, and Encoding > > My Book: > Cleaner e-book: > > Compression Classes at Stanford June 30-July 4 and Aug 11-15 > > > > > > on 5/2/03 10:55, kapo at kapo@acroid.com wrote: > > > Yeah but Envivo's prices remain high :) > > > From logic_cad yahoo.com Fri May 2 14:05:03 2003 From: logic_cad yahoo.com (George Wong) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] Streaming server code Message-ID: <20030502200503.51416.qmail@web21501.mail.yahoo.com> Hi everybody, I'm planning to write the code for the streaming server from scratch. Besides referring to the Darwin open source code, are there any other references available? Thanks __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From lzm02 mails.tsinghua.edu.cn Sat May 3 12:35:04 2003 From: lzm02 mails.tsinghua.edu.cn (Li Zhengming) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] About YUV12 codecs? Message-ID: <001c01c31124$fcc10970$3f496fa6@automatihc6u4i> Dear all, I am trying to find a yuv12 codec now, and please inform me if you have one or know where to get one. Thanks a lot! Li zhengming ÀîÕùÃ÷ £­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­ £­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­ From oamato wanadoo.fr Sat May 3 11:46:08 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder References: Message-ID: <005301c31150$724387b0$0a00000a@beck> Andrew, > You can consider VBrick's hardware encoder www.vbrick.com/vbxcast - I see that VBXcast integrates an RTSP server. How many simultaneous unicast clients can it approximately handle ? - Is it possible to use the encoder in conjunstion with Apple's Darwin Streaming Server ? Best regards, Olivier From ben interframemedia.com Sat May 3 08:43:31 2003 From: ben interframemedia.com (Ben Waggoner) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder In-Reply-To: <005301c31150$724387b0$0a00000a@beck> Message-ID: on 5/3/03 1:46, Olivier Amato at oamato@wanadoo.fr wrote: >> You can consider VBrick's hardware encoder www.vbrick.com/vbxcast > > - I see that VBXcast integrates an RTSP server. > How many simultaneous unicast clients can it approximately handle ? It depends on all the usual variables, but dozens at least. > - Is it possible to use the encoder in conjunstion with Apple's Darwin > Streaming Server ? Yep. You can use Darwin as a reflector, etcetera, like normal. Ben Waggoner Compressed Video Consulting, Training, and Encoding My Book: Cleaner e-book: Compression Classes at Stanford June 30-July 4 and Aug 11-15 From oamato wanadoo.fr Sun May 4 10:00:19 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder References: Message-ID: <001b01c3120a$d4822de0$0a00000a@beck> Ben, > Yep. You can use Darwin as a reflector, etcetera, like normal. Sounds great ! Is VBXcast only focused on live streaming or is it possible to produce MP4 files for further on demand streaming ? Do you know other MPEG-4 appliances than this one ? Regards, Olivier From sm dicas.de Sun May 4 10:13:04 2003 From: sm dicas.de (Moeritz, Sebastian) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder In-Reply-To: <000001c310d6$d41f1b40$acb0c1d5@acroid> Message-ID: <004801c31215$060a5720$89717bd5@London> Hi Kapo -- you may also want to check out our mpegable Broadcaster, which does exactly what you need. You can download a free 30-trial version on our site, http://www.mpegable.com/showPage.php?SITE=mpegable&PAGE=mpegables4 If you have any further questions, please contact me. Kind regards. Seb -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of kapo Sent: Friday, May 02, 2024 7:06 PM To: Ben Waggoner; technotes@lists.m4if.org Subject: Re: [M4IF Technotes] any using live mpg4 encoder Ok I see ,thanks for the information. Kind regards ----- Original Message ----- From: "Ben Waggoner" To: "kapo" ; Sent: Friday, May 02, 2024 8:00 PM Subject: Re: [M4IF Technotes] any using live mpg4 encoder > Kapo, > > Oh, you want good AND cheap? Good are Envivio and VBrick, and probably > others. Cheap is MPEG4IP's live broadcaster, but you'll need to be > ready to > get your hands dirty compiling code. > > Ben Waggoner > Compressed Video Consulting, Training, and Encoding > > My Book: > Cleaner e-book: > > Compression Classes at Stanford June 30-July 4 and Aug 11-15 > > > > > > on 5/2/03 10:55, kapo at kapo@acroid.com wrote: > > > Yeah but Envivo's prices remain high :) > > > _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From raju2003 bolt.com Sun May 4 04:30:56 2003 From: raju2003 bolt.com (raju2003@bolt.com) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] BIFS source Message-ID: <20030504033056.20288.h011.c000.wm@mail.bolt.com.criticalpath.net> Hi all Can anyone tell me if C implementation of BIFS decoder exists?(If possible give URLs). thanks in advance. raj ------------------------------------------------------- Bolt. Everything you need to speak your mind, hang out, hook up ... whatever. Tagbooks ?, Bolt Notes ?, message boards, personality quizzes, photos, free stuff and lots more! http://www.bolt.com From SassanP vbrick.com Mon May 5 11:13:05 2003 From: SassanP vbrick.com (Sassan Pejhan) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] any using live mpg4 encoder Message-ID: Olivier, [..] > Is VBXcast only focused on live streaming or is it possible > to produce MP4 > files for further on demand streaming ? VBXcast is currently a live streaming box, but VBrick also provides a PC-based player software (for free) that can capture and record streams produced by VBXcast in MP4 files. Record capability will soon be added to a version of VBXcast which will have a local hard disk. Regards, Sassan From mcalamaro dartway.com Mon May 5 19:30:01 2003 From: mcalamaro dartway.com (Marco Calamaro) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] 3GP to MP4 Message-ID: <3EB69189.2080507@dartway.com> Hi all, We have to convert a 3GP file created with a Nokia 3650 (containing video and audio) to a MP4 file useful for streaming with Darwin. Is it possible to create a batch procedure to do this. What kind of tool do we need? Thanks a lot, Marco From bph_uvce yahoo.com Sat May 3 22:26:24 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] Spatial segmentation Message-ID: <20030504042624.63847.qmail@web40304.mail.yahoo.com> Hi all, Could any one please help me with how I can do spatial segmentation i.e., to extract out a video object from mpeg4 bitstream. I feel by demultiplexing the mpeg4 stream it may be possible. I am not sure. I will be thankful if somebody could help me. b.p.harish __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From bph_uvce yahoo.com Mon May 5 08:46:21 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] .bits to .mp4 Message-ID: <20030505144621.14308.qmail@web40306.mail.yahoo.com> Hi all, Is there a software that can convert .bits files output by MoMuSys MPEG4 encoder to .mp4 file that can be played on MPEG4 player (like mpegable player or gmp4player). If so where can I download it? else, how can I play .bits files Thanks in advance, b.p.harish __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From bfelts envivio.com Mon May 5 10:58:54 2003 From: bfelts envivio.com (Boris Felts) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] 3GP to MP4 In-Reply-To: <3EB69189.2080507@dartway.com> Message-ID: <004701c31327$9ea71c30$8a33ec0c@sfo.envivio.com> If you can hint the file, that would work. We have a command-line hinter, QuickTime player pro can also reexport the file with hint tracks (as long as the file can be imported in QT) Boris -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of Marco Calamaro Sent: Monday, May 05, 2024 9:30 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] 3GP to MP4 Hi all, We have to convert a 3GP file created with a Nokia 3650 (containing video and audio) to a MP4 file useful for streaming with Darwin. Is it possible to create a batch procedure to do this. What kind of tool do we need? Thanks a lot, Marco _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From Ariel.David ParthusCeva.com Mon May 5 21:16:57 2003 From: Ariel.David ParthusCeva.com (Ariel David) Date: Wed Jul 30 14:10:23 2003 Subject: [M4IF Technotes] simple profile video decoder open questions Message-ID: <988BE481ACC95C429DCB909F74A3163A34CA90@exchange-il> Hi, I am trying to build a simple-profile video decoder. I am trying to figure out exactly what functions this decoder should support. Another open question about Simple profile has to do with VOPs. I know that SP@L1 and up can support up to 4 VOPs. I can't find any documentation in the standards or in any other place on how to reconstruct multiple VOPs. Here are my open issues if someone can help. 1. Should it support Quatization types 1 and 2 ? 2. Should it support Quarter pel Motion compensation ? 3. Should it support Global motion compensation ? 4. Shoudl it support Pixel precision 4-12bit ? 6. Can VOPs overlap? If so then should the decoder support transparent blocks and macroblocks? 7. If VOPs do not overlap then is there anything else between VOPs that I should take care of? I hope someone has answers because there is no specific answer in the standard. Thanks, Ariel -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030505/12d5939d/attachment.html From ERICT3 hthk.com Tue May 6 12:23:38 2003 From: ERICT3 hthk.com (ERICT3@hthk.com) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] 3GP to MP4 Message-ID: Hi Marco, Nokia 3650 video track is in QCIF H.263 Video Codec. You need to find something to encode H.263 to MP4 codec. (i.e. Philips Platform 4 or Hantro) Nothing's free though~ tell me if you find anything free as well :) Eric > .......................................................................... > Multimedia Enabling Services > Network Service Architecture Development Department > Hutchison 3G HK Limited > .......................................................................... > * Email : erict3@hthk.com > _____ 3 _____ > .: www.three.com.hk :. > > > ---------- > From: Marco Calamaro[SMTP:mcalamaro@dartway.com] > Reply To: mcalamaro@dartway.com > Sent: 2003¦~5¤ë6¤é ¤W¤È 12:30 > To: technotes@lists.m4if.org > Subject: [M4IF Technotes] 3GP to MP4 > > Hi all, > We have to convert a 3GP file created with a Nokia 3650 (containing > video and audio) to a MP4 file useful for streaming with Darwin. > Is it possible to create a batch procedure to do this. What kind of tool > > do we need? > > Thanks a lot, > > Marco > > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From ashok broadware.com Mon May 5 21:34:01 2003 From: ashok broadware.com (Ashok Yerneni) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] FGS profiles... Message-ID: <000301c31380$590f4360$38c80a0a@MOON> Which version of the ISO spec defines the FGS profile? Is the base layer in FGS supposed to have the same syntax as Advanced simple or simple profile? Are there any encoders out there that support this encoding scheme? Regards, Ashok --- Ashok Yerneni VP of Engineering and CTO BroadWare Technologies ashok@broadware.com 408-342-2630(off) 408-342-2601(fax) -------------- next part -------------- A non-text attachment was scrubbed... Name: Ashok Yerneni (ashok@broadware.com).vcf Type: text/x-vcard Size: 483 bytes Desc: not available Url : /pipermail/mp4-tech/attachments/20030505/ed1c29d6/AshokYerneniashokbroadware.com.bin From gchandra tataelxsi.co.in Tue May 6 10:26:40 2003 From: gchandra tataelxsi.co.in (Chandra Sekhar Reddy G) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] simple profile video decoder open questions References: <988BE481ACC95C429DCB909F74A3163A34CA90@exchange-il> Message-ID: <00b601c31383$87065ad0$b514010a@telxsi.com> simple profile video decoder open questionsHi, SP@L1 supports a maximum of 4 SimpleVideoObjects (not VOPs), and each object will have a separate bitstream. Putting these objects together is not in the scope of MPEG4-Visual part, it is part of the Scene/Object-Description in MPEG4-Systems part. 1. Simple Profile supports only quant-type = 0 (i.e., quantization-method-2) 2,3. Simple Profile does not support quarter-pel and GMC (ASP includes these). 6,7. Simple Profile does not support binary-mask (shape) coding. If overlapping is required between the (rectangular) objects, take help of Scene/Object-Description in MPEG4-Systems part. 4. Regarding pixel-precision 4-14-bits, In the standard, it is mentioned that: ----------------------- not_8_bit: This one bit flag is set when the video data precision is not 8 bits per pixel and visual object type is Nbit ----------------------- N-Bit-Object is not part of Simple Profile!. Regards, Chandra ----- Original Message ----- From: Ariel David To: technotes@lists.m4if.org Sent: Monday, May 05, 2024 10:46 PM Subject: [M4IF Technotes] simple profile video decoder open questions Hi, I am trying to build a simple-profile video decoder. I am trying to figure out exactly what functions this decoder should support. Another open question about Simple profile has to do with VOPs. I know that SP@L1 and up can support up to 4 VOPs. I can't find any documentation in the standards or in any other place on how to reconstruct multiple VOPs. Here are my open issues if someone can help. 1. Should it support Quatization types 1 and 2 ? 2. Should it support Quarter pel Motion compensation ? 3. Should it support Global motion compensation ? 4. Shoudl it support Pixel precision 4-12bit ? 6. Can VOPs overlap? If so then should the decoder support transparent blocks and macroblocks? 7. If VOPs do not overlap then is there anything else between VOPs that I should take care of? I hope someone has answers because there is no specific answer in the standard. Thanks, Ariel -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030506/07c6eb5d/attachment.html From gchandra tataelxsi.co.in Tue May 6 10:44:19 2003 From: gchandra tataelxsi.co.in (Chandra Sekhar Reddy G) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] Spatial segmentation References: <20030504042624.63847.qmail@web40304.mail.yahoo.com> Message-ID: <00be01c31385$f7527420$b514010a@telxsi.com> Hi, "Extract out a video object from mpeg4 bitstream" is not called as "spatial segmentation". As I understand, spatial-segmentation means "separating different parts (objects) of an image into different images, one-object-to-one-image". For example, an image consisting of a news-reader, a table and the background, can be segmented into three separate images, a news-reader-image, a table-image and a background image. The same can be repeated for all the images (frames) in a video-sequence. This can be done manually or can be automated. There are different methods (combinations) for doing this: using luminance/chrominance-gradient, motion-tracking etc. Search on the net. Regards, Chandra ----- Original Message ----- From: "B.P.Harish" To: Sent: Sunday, May 04, 2024 9:56 AM Subject: [M4IF Technotes] Spatial segmentation > Hi all, > Could any one please help me with how I can do spatial > segmentation i.e., to extract out a video object from > mpeg4 bitstream. > I feel by demultiplexing the mpeg4 stream it may be > possible. I am not sure. > I will be thankful if somebody could help me. > b.p.harish > > __________________________________ > Do you Yahoo!? > The New Yahoo! Search - Faster. Easier. Bingo. > http://search.yahoo.com > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes From Jsu tvia.com Mon May 5 22:30:33 2003 From: Jsu tvia.com (Jessica Su) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] MPEG-4 Codec Wanted! Message-ID: <6AC6F623D5EE074A988979EFE98285BD237142@fresno.tvia.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030505/6b7e1cdd/attachment.html From sunx pollux.usc.edu Tue May 6 00:52:24 2003 From: sunx pollux.usc.edu (sunx) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] FGS profiles... In-Reply-To: <000301c31380$590f4360$38c80a0a@MOON> Message-ID: MPEG Version 4 defines the FGS profile. The base layer is almost the same as the simple profile. On Mon, 5 May 2003, Ashok Yerneni wrote: > Which version of the ISO spec defines the FGS profile? Is the base layer in > FGS supposed to have the same syntax as Advanced simple or simple profile? > Are there any encoders out there that support this encoding scheme? > > Regards, > > Ashok > > --- > Ashok Yerneni > VP of Engineering and CTO > BroadWare Technologies > ashok@broadware.com > 408-342-2630(off) > 408-342-2601(fax) > > From julien resonate-mp4.com Wed May 7 01:31:34 2003 From: julien resonate-mp4.com (Julien Boeuf) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] 3GP to MP4 References: Message-ID: <000b01c3141f$4053c7c0$0200a8c0@shannon> Hi Marco, Eric, Actually, streaming the .3gp file with Darwin Streaming Server, does not require to transcode the video (into an MPEG-4 video stream wrapped in an MP4 file) but to hint the h263 video track according to the RFC specified in the 3GPP specs. We have successfully streamed such files using DSS as a server and Philips player as a client. Our tool is not immediatly available to the public though... If you want more information you can contact us directly at contact@resonate-mp4.com Best regards, Julien. ----- Original Message ----- From: To: Sent: Tuesday, May 06, 2024 5:23 AM Subject: RE: [M4IF Technotes] 3GP to MP4 > Hi Marco, > > Nokia 3650 video track is in QCIF H.263 Video Codec. > > You need to find something to encode H.263 to MP4 codec. (i.e. Philips > Platform 4 or Hantro) > > Nothing's free though~ tell me if you find anything free as well :) > > Eric > > .......................................................................... > > Multimedia Enabling Services > > Network Service Architecture Development Department > > Hutchison 3G HK Limited > > .......................................................................... > > * Email : erict3@hthk.com > > _____ 3 _____ > > .: www.three.com.hk :. > > > > > > ---------- > > From: Marco Calamaro[SMTP:mcalamaro@dartway.com] > > Reply To: mcalamaro@dartway.com > > Sent: 2003?5?6? ?? 12:30 > > To: technotes@lists.m4if.org > > Subject: [M4IF Technotes] 3GP to MP4 > > > > Hi all, > > We have to convert a 3GP file created with a Nokia 3650 (containing > > video and audio) to a MP4 file useful for streaming with Darwin. > > Is it possible to create a batch procedure to do this. What kind of tool > > > > do we need? > > > > Thanks a lot, > > > > Marco > > > > > > _______________________________________________ > > Technotes mailing list > > Technotes@lists.m4if.org > > http://lists.m4if.org/mailman/listinfo/technotes > > > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From lzm02 mails.tsinghua.edu.cn Wed May 7 10:17:31 2003 From: lzm02 mails.tsinghua.edu.cn (Li Zhengming) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] How to stream video streams got by virtualdub? Message-ID: <002601c31436$6ef511d0$3f496fa6@freebreeze> Dear all, I installed a xvid codec and used the well-knwon VirtualDub to got a xvid coded video stream. However, I couldn't stream it with the Helix Server. I made a hinted mp4 file with the mpeg4ip tools and put the mp4 file on the helix server. I used a Quicktime player to connect the server, trying to playback the movie, but only to find that the player's blank though the time indicator did move. However, when I used a xvid encoder to got a videa stream and made a hinted mp4 file with the mpeg4ip tools, the player and server cooperated quite well. There's clear video scenes in the player. Why should this have happened? Is there anything I should take care of when streaming a video through the helix server? ÀîÕùÃù ------------------------------------------ From singer apple.com Tue May 6 11:01:15 2003 From: singer apple.com (Dave Singer) Date: Wed Jul 30 14:10:24 2003 Subject: [M4IF Technotes] 3GP to MP4 In-Reply-To: References: Message-ID: we announced support for 3GPP, but haven't quite shipped yet; when we do, any batch tool (e.g. Cleaner, iView Media) that uses QT should be able to cope. At 11:23 +0800 5/6/03, ERICT3@hthk.com wrote: >Hi Marco, > >Nokia 3650 video track is in QCIF H.263 Video Codec. > >You need to find something to encode H.263 to MP4 codec. (i.e. Philips >Platform 4 or Hantro) > >Nothing's free though~ tell me if you find anything free as well :) > >Eric >> .......................................................................... >> Multimedia Enabling Services >> Network Service Architecture Development Department >> Hutchison 3G HK Limited >> .......................................................................... >> * Email : erict3@hthk.com >> _____ 3 _____ >> .: www.three.com.hk :. >> >> >> ---------- >> From: Marco Calamaro[SMTP:mcalamaro@dartway.com] >> Reply To: mcalamaro@dartway.com >> Sent: 2003?N5??6?? ???? 12:30 >> To: technotes@lists.m4if.org >> Subject: [M4IF Technotes] 3GP to MP4 >> >> Hi all, >> We have to convert a 3GP file created with a Nokia 3650 (containing >> video and audio) to a MP4 file useful for streaming with Darwin. >> Is it possible to create a batch procedure to do this. What kind of tool >> >> do we need? >> >> Thanks a lot, >> >> Marco >> >> >> _______________________________________________ >> Technotes mailing list >> Technotes@lists.m4if.org >> http://lists.m4if.org/mailman/listinfo/technotes >> > >_______________________________________________ >Technotes mailing list >Technotes@lists.m4if.org >http://lists.m4if.org/mailman/listinfo/technotes -- David Singer Apple Computer/QuickTime -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030506/12e723e6/attachment.html From stage.nexvision laposte.net Wed May 7 11:18:09 2003 From: stage.nexvision laposte.net (Stage NexVision) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] Decoder specific info for visual atoms Message-ID: Dear experts, I'm trying to encode my own MP4 file. In order to do this, I've made an MP4 file analyser (atom + descriptor analysers) Then, I've found a file called "sorenson.mp4" which is very basic and plays well in all player I have (wmp4player from MPEG4IP project, Philips one, TVM4 one, and MPEGable) I have extracted the information (ie headers from that file which is 320x240), and modified them accordingly to my analyser. However, on some players, the image is struck to 320x240 size, while in some it's the right size which is read (720x576). This is the place in the file where I modified the size values: in the tkhd atom, mp4v atom, esds for the scene description atom, and in the visual bitstream header (directly in the frames) I've understood all the atom information except in 2 places : I am missing some information about 2 little parts of the MPEG4 standard. I've read the ISO 14496-1:1998 document, but I can't find any information about the decoder specific info for my 'mp4v' atom (descriptor with tag 0x05) I've found the good "decoder specific information" for the 'mp4s' scene description, (in chapter 9.3-4). In this document, however, for visual track only, they refers to the "Annex L", I don't have, or I can't find. Does any of you can explain me if these 'crazy' 32 bytes contains any informations about the movie size ? Decoder specific info \/ 05 80808020 00 00 01 B0 01 00 00 01 B5 0E E0 40 40 AF 00 00 01 00 00 00 01 20 00 84 5D 4C 28 50 20 F0 A3 1F My second question is where can I find a free BIFS decoder, because I can't understand easily the first 10 bytes in the "mdat" atom which are BIFS commands. When I try to decompose them, I find some bits that are not described in Part 2, (or I don't know where). I know it's quite a long mail, but if you could arrive till this line, you might be able to answer me ;-) (please...) Sincerly Cyril Russo From lmwang brovic.com Wed May 7 18:10:34 2003 From: lmwang brovic.com (lmwang) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] =?iso-8859-1?Q?=B4=F0=B8=B4:_=5BM4IF_Technotes=5D_Decoder_specific_in?= =?iso-8859-1?Q?fo_for_visual_atoms?= In-Reply-To: Message-ID: <000001c31478$84a039f0$3601010a@lmwang> Dear Cyril, See ISO/IEC 14496-2:2001(E) Annex K Decoder Configuration Information for more. In my understanding, parsing decoderspecificinfo structure is like parse VOSH+VO header. So the bitstream like 00 00 01 B0, 00 00 00 01 B5,00 00 01 00 is Video Object sequence start code,visual object start code,video object start code. By parsing them, you'll get some basic information like video width,height etc. You can refer to OSMO4's xvid plugin-in code: http://www.comelec.enst.fr/osmo4/v1.2.1/Osmo4_SRC.zip good luck, Limin -----????----- ???: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] ?? Stage NexVision ????: 2003?5?7? 16:18 ???: technotes@lists.m4if.org ??: [M4IF Technotes] Decoder specific info for visual atoms Dear experts, I'm trying to encode my own MP4 file. In order to do this, I've made an MP4 file analyser (atom + descriptor analysers) Then, I've found a file called "sorenson.mp4" which is very basic and plays well in all player I have (wmp4player from MPEG4IP project, Philips one, TVM4 one, and MPEGable) I have extracted the information (ie headers from that file which is 320x240), and modified them accordingly to my analyser. However, on some players, the image is struck to 320x240 size, while in some it's the right size which is read (720x576). This is the place in the file where I modified the size values: in the tkhd atom, mp4v atom, esds for the scene description atom, and in the visual bitstream header (directly in the frames) I've understood all the atom information except in 2 places : I am missing some information about 2 little parts of the MPEG4 standard. I've read the ISO 14496-1:1998 document, but I can't find any information about the decoder specific info for my 'mp4v' atom (descriptor with tag 0x05) I've found the good "decoder specific information" for the 'mp4s' scene description, (in chapter 9.3-4). In this document, however, for visual track only, they refers to the "Annex L", I don't have, or I can't find. Does any of you can explain me if these 'crazy' 32 bytes contains any informations about the movie size ? Decoder specific info \/ 05 80808020 00 00 01 B0 01 00 00 01 B5 0E E0 40 40 AF 00 00 01 00 00 00 01 20 00 84 5D 4C 28 50 20 F0 A3 1F My second question is where can I find a free BIFS decoder, because I can't understand easily the first 10 bytes in the "mdat" atom which are BIFS commands. When I try to decompose them, I find some bits that are not described in Part 2, (or I don't know where). I know it's quite a long mail, but if you could arrive till this line, you might be able to answer me ;-) (please...) Sincerly Cyril Russo _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From tma iis.fhg.de Wed May 7 15:26:17 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] Decoder specific info for visual atoms References: Message-ID: <3EB8FB69.749496EF@iis.fhg.de> Stage NexVision schrieb: > Does any of you can explain me if these 'crazy' 32 bytes contains any > informations about the movie size ? These crazy bytes are the headers of the video elementary stream, see ISO/IEC 14496-2. And yes, the VOL width and VOL height are encoded in these bits. > Decoder specific info > \/ > 05 80808020 00 00 01 B0 01 00 00 01 B5 0E E0 40 40 AF > 00 00 01 00 00 00 01 20 00 84 5D 4C 28 50 20 F0 A3 1F The following is what our Fraunhofer IIS MPEG-4 Video Decoder says to your 32 bytes: ---------------------------------------------------------- Visual Sequence Header (VS ID = 0): Start Code Prefix: "000000000000000000000001", Start Code: "10110000" = 0xB0 Profile and Level Indication: "00000001" = 1 ---------------------------------------------------------- Visual Object Header (VO ID = 0, VS ID = 0): Start Code Prefix: "000000000000000000000001", Start Code: "10110101" = 0xB5 Is Visual Object Identifier: "0" = 0 Visual Object Type: "0001" = 1 Video Signal Type: "1" = 1 Video Format: "101" = 5 Video Range: "1" = 1 Colour Description: "1" = 1 Colour Primaries: "00000010" = 2 Transfer Characteristics: "00000010" = 2 Matrix Coefficients: "00000101" = 5 Align Bits: "01111" = 5 bit(s) ---------------------------------------------------------- Video Object Header (VO ID = 0, VS ID = 0): Start Code Prefix: "000000000000000000000001", Start Code: "00000000" = 0x00 ---------------------------------------------------------- Video Object Layer Header (VOL ID = 0, VO ID = 0, VS ID = 0): Start Code Prefix: "000000000000000000000001", Start Code: "00100000" = 0x20 Random Accessible VOL: "0" = 0 Video Object Type Indication: "00000001" = 1 Is Visual Object Layer Identifier: "0" = 0 Aspect Ratio Info: "0001" = 1 VOL Control Parameters: "0" = 0 Video Object Layer Shape: "00" = 0 Marker Bit: "1" VOP Timeincrement Resolution: "0111010100110000" = 30000 Marker Bit: "1" Fixed VOP Rate: "0" = 0 Marker Bit: "1" VOL Width: "0000101000000" = 320 Marker Bit: "1" VOL Height: "0000011110000" = 240 Marker Bit: "1" Interlaced: "0" = 0 OBMC Disable: "1" = 1 Sprite Enable: "0" = 0 Not 8 Bit: "0" = 0 Quant Type: "0" = 0 Complexity Estimation Disable: "1" = 1 Resync Marker Disable: "1" = 1 Data Partitioned: "0" = 0 Scalability: "0" = 0 Align Bits: "011111" = 6 bit(s) Herbert. -- 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 Wesley.DeNeve ugent.be Wed May 7 14:12:09 2003 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion Message-ID: <01bb01c31489$a9d799a0$ba53c19d@Poulenc> Hi everyone, does someone know which formulas are implemented by Microsoft's tools for YCrCb 4:2:0 to RGB888 conversion and vice versa (i.e. yuvtoavi.exe and avitoyuv.exe)? It would also be very helpful to know how these tools perform up- and downsampling. The following URL provides some information about YCrCb to RGB conversion, but I'm not sure if that explanation matches with the internals of yuvtoavi.exe and avitoyuv.exe: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/YUVFormats.asp Thanks, Wesley De Neve -- Ghent University ELIS / Multimedia Lab From singer apple.com Wed May 7 17:03:46 2003 From: singer apple.com (Dave Singer) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] =?iso-8859-1?Q?=B4=F0=B8=B4=3A?= [M4IF Technotes] Decoder specific in fo for visual atoms In-Reply-To: <000001c31478$84a039f0$3601010a@lmwang> References: <000001c31478$84a039f0$3601010a@lmwang> Message-ID: The size problem is an artifact of mpeg4 file format version 1. We thought (wrongly) that we shouldn't pujt a size in the track header and sample description, and reserved those fields to 320x240. Version 2 fixes that bug. Most players are 'version 2'; a few version 1 players will notice this and check the visual headers for the truth. >-----????----- >???: technotes-admin@lists.m4if.org >[mailto:technotes-admin@lists.m4if.org] ?? Stage NexVision >????: 2003?5?7? 16:18 >???: technotes@lists.m4if.org >??: [M4IF Technotes] Decoder specific info for visual atoms > >Dear experts, > > I'm trying to encode my own MP4 file. >In order to do this, I've made an MP4 file analyser (atom + descriptor >analysers) >Then, I've found a file called "sorenson.mp4" which is very basic and >plays >well in all player I have (wmp4player from MPEG4IP project, Philips one, >TVM4 one, and MPEGable) >I have extracted the information (ie headers from that file which is >320x240), and modified them accordingly to my analyser. >However, on some players, the image is struck to 320x240 size, while in >some >it's the right size which is read (720x576). > >This is the place in the file where I modified the size values: >in the tkhd atom, mp4v atom, esds for the scene description atom, and in >the >visual bitstream header (directly in the frames) > >I've understood all the atom information except in 2 places : > > I am missing some information about 2 little parts of the MPEG4 >standard. >I've read the ISO 14496-1:1998 document, but I can't find any >information >about the decoder specific info for my 'mp4v' atom (descriptor with tag >0x05) >I've found the good "decoder specific information" for the 'mp4s' scene >description, (in chapter 9.3-4). >In this document, however, for visual track only, they refers to the >"Annex >L", I don't have, or I can't find. > >Does any of you can explain me if these 'crazy' 32 bytes contains any >informations about the movie size ? > >Decoder specific info >\/ >05 80808020 00 00 01 B0 01 00 00 01 B5 0E E0 40 40 AF >00 00 01 00 00 00 01 20 00 84 5D 4C 28 50 20 F0 A3 1F > >My second question is where can I find a free BIFS decoder, because I >can't >understand easily the first 10 bytes in the "mdat" atom which are BIFS >commands. > >When I try to decompose them, I find some bits that are not described in >Part 2, (or I don't know where). > >I know it's quite a long mail, but if you could arrive till this line, >you >might be able to answer me ;-) (please...) > >Sincerly >Cyril Russo > > >_______________________________________________ >Technotes mailing list >Technotes@lists.m4if.org >http://lists.m4if.org/mailman/listinfo/technotes > > >_______________________________________________ >Technotes mailing list >Technotes@lists.m4if.org >http://lists.m4if.org/mailman/listinfo/technotes -- David Singer Apple Computer/QuickTime From Gerardo.Rosiles motorola.com Wed May 7 10:22:31 2003 From: Gerardo.Rosiles motorola.com (Rosiles Gerardo-ra9355) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion Message-ID: <6728517EECE7D511981B00D0B78290310355EEA2@az33exm27.corp.mot.com> Hi Wesley, This method is correct in DSP terms. The difference in implementation could be the filters that are actually used. One more thing to be aware of is if you are working with interlaced or progessive frames. The spatial relations between Chroma and Luma are different between the two scans. For interlaced scan a different set of filter taps would be required. It seems this site explains only the case for progressive conversions. Do the yuvtoavi tools support interlaced standard conversion? Regards, Gerardo -----Original Message----- From: Wesley De Neve [mailto:Wesley.DeNeve@ugent.be] Sent: Wednesday, May 07, 2024 6:12 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] YCrCb to RGB conversion Hi everyone, does someone know which formulas are implemented by Microsoft's tools for YCrCb 4:2:0 to RGB888 conversion and vice versa (i.e. yuvtoavi.exe and avitoyuv.exe)? It would also be very helpful to know how these tools perform up- and downsampling. The following URL provides some information about YCrCb to RGB conversion, but I'm not sure if that explanation matches with the internals of yuvtoavi.exe and avitoyuv.exe: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/YUVFormats.asp Thanks, Wesley De Neve -- Ghent University ELIS / Multimedia Lab _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From Wesley.DeNeve ugent.be Wed May 7 22:35:22 2003 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion References: <6728517EECE7D511981B00D0B78290310355EEA2@az33exm27.corp.mot.com> Message-ID: <01b401c314cf$cce01850$0100a8c0@dune> Hi Gerardo, Tobias, all, Rosiles Gerardo-ra9355 wrote: > Hi Wesley, > > This method is correct in DSP terms. The difference in > implementation could be the filters that are actually used. One more > thing to be aware of is if you are working with interlaced or > progessive frames. The spatial relations between Chroma and Luma are > different between the two scans. For interlaced scan a different set > of filter taps would be required. It seems this site explains only > the case for progressive conversions. good to know that. > Do the yuvtoavi tools support interlaced standard conversion? I don't think they support deinterlacing, but I'm not sure about that due to the lack of documentation. The input test sequences were normally progressive. I'm interested in the applied formulas because there has to be a large difference between the ones applied in the avitoyuv/yuvtoavi tools and those implemented by the tool as found on http://www.ee.surrey.ac.uk/Personal/S.Worrall/dloads/yuv2avi.zip. I did a test with the foreman test sequence in which I placed the first frame in an AVI file by making use of yuv2avi (also doing a conversion to the RGB888 colorspace). After that I immediately extracted the frame in question from the AVI file by the avitoyuv tool (doing a conversion back from RGB888 to YCrCb). Result: Y-PSNR +/- 20 dB (and this without compression...). Today I've seen in the history of this mailinglist that yuv2avi indeed has some strange behaviour (http://lists.m4if.org/pipermail/technotes/2002-July/000982.html). As Tobias already mentioned, it's indeed better to implement those tools by yourself and I've done that for PSNR calculation, for RGB/YCrCb conversion (based on the equations as described by MSDN), and for putting YCrCb frames in the MOV file format (not yet for the AVI file format). On the other hand, I do not want to invent the wheel twice ;-). Thanks for the replies, Wesley From mykim us.ibm.com Wed May 7 16:54:58 2003 From: mykim us.ibm.com (Michelle Y Kim) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] Fw: IBM Toolkit for MPEG-4 is now available as a technology download from IBM alphaWorks Message-ID: All, We have posted the IBM Toolkit for MPEG-4 on IBM alphaWorks as a technology download from http://www.alphaworks.ibm.com/tech/tk4mpeg4. The toolkit consists of a set of technologies compliant with the MPEG-4 standard. It is implemented as Java classes and APIs, which can be used to develop MPEG-4 applications for authoring and playback. Since the toolkit is Java-based, applications are cross-platform, and will run on any platform where Java is supported. The following three applications are provided as demonstration of this toolkit: AVgen is a simple, easy-to-use GUI tool for creating audio/video-only content for ISMA- or 3GPP-compliant devices. XMTBatch is a tool for creating rich MPEG-4 content beyond simple audio and video. Both AVgen and XMTBatch are based on the XMT standard (MPEG-4 in XML) technology. M4Play is an MPEG-4 playback application. More information on the toolkit and some MPEG-4 demos can be found at http://www.research.ibm.com/mpeg4. If you have any questions concerning the toolkit, you can either forward them to me or post them on the alphaWorks discussion forum. Have fun! 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030507/be89ee72/attachment.html From Gerardo.Rosiles motorola.com Wed May 7 14:32:38 2003 From: Gerardo.Rosiles motorola.com (Rosiles Gerardo-ra9355) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion Message-ID: <6728517EECE7D511981B00D0B78290310355EEA6@az33exm27.corp.mot.com> Hello, One more thing that catched my eye on the MSDN explanation is that the chroma upsamling they propose is not 100% correct. They do not correct for the half sample shift that is introduced during the 4:2:2 to 4:2:0 down conversion (in MPEG-2 terms). This effectively saves you half of the computations required on 4:2:0 to 4:2:2. Not correcting for this phase misalignment could potentially introduce color shifts. However, I suspect that after compression the chroma information has been quantized so much that the 1/2 pel shift does not matter. Your experiment without compression also points in this direction, but I'll make sure you test with a few sequences with and without the phase alignment to be sure it meets your quality expectative. FYI, for interlaced video testing I have used the VQEG sequences. I have read reports (see http://www.hometheaterhifi.com/volume_8_2/dvd-benchmark-special-report-chroma-bug-4-2001.html) of disturbing artifacts introduced by processing interlaced data as progressive data for chroma upsampling. Regards, Gerardo -----Original Message----- From: Wesley De Neve [mailto:Wesley.DeNeve@ugent.be] Sent: Wednesday, May 07, 2024 2:35 PM To: Rosiles Gerardo-ra9355; technotes@lists.m4if.org Subject: Re: [M4IF Technotes] YCrCb to RGB conversion Hi Gerardo, Tobias, all, Rosiles Gerardo-ra9355 wrote: > Hi Wesley, > > This method is correct in DSP terms. The difference in implementation > could be the filters that are actually used. One more thing to be > aware of is if you are working with interlaced or progessive frames. > The spatial relations between Chroma and Luma are different between > the two scans. For interlaced scan a different set of filter taps > would be required. It seems this site explains only the case for > progressive conversions. good to know that. > Do the yuvtoavi tools support interlaced standard conversion? I don't think they support deinterlacing, but I'm not sure about that due to the lack of documentation. The input test sequences were normally progressive. I'm interested in the applied formulas because there has to be a large difference between the ones applied in the avitoyuv/yuvtoavi tools and those implemented by the tool as found on http://www.ee.surrey.ac.uk/Personal/S.Worrall/dloads/yuv2avi.zip. I did a test with the foreman test sequence in which I placed the first frame in an AVI file by making use of yuv2avi (also doing a conversion to the RGB888 colorspace). After that I immediately extracted the frame in question from the AVI file by the avitoyuv tool (doing a conversion back from RGB888 to YCrCb). Result: Y-PSNR +/- 20 dB (and this without compression...). Today I've seen in the history of this mailinglist that yuv2avi indeed has some strange behaviour (http://lists.m4if.org/pipermail/technotes/2002-July/000982.html). As Tobias already mentioned, it's indeed better to implement those tools by yourself and I've done that for PSNR calculation, for RGB/YCrCb conversion (based on the equations as described by MSDN), and for putting YCrCb frames in the MOV file format (not yet for the AVI file format). On the other hand, I do not want to invent the wheel twice ;-). Thanks for the replies, Wesley From garysull windows.microsoft.com Wed May 7 15:39:22 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246023BA3D3@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> I am the first author on that MSDN article. Here is what I know. I am trying to find out more, but not promising anything. The half-sample shift issue is discussed in some detail in the section of the MSDN article on 4:2:0 to 4:4:4 conversion. Vertically, yes - the resampling is technically off-phase by half a sample. Horizontally, it depends on the definition of 4:2:0 -- if you use the definition in MPEG-2 or MPEG-4 visual, they are OK horizontally. As Gerardo indicates, the phase shift allowed in the MSDN article saves some computations and probably does not significantly harm visual quality. I believe the yuvtoavi and avitoyuv tools that Wesley mentioned as coming from Microsoft are not part of any Microsoft product. They were provided by a Microsoft MPEG participant as part of the MPEG-4 visual reference software package only, and only for purposes of aiding in doing quick experiments. They are undocumented and were never tested or inspected to make sure they are completely correct in any strict sense. There may even be more than one version of them floating around, and we aren't confident of what they are doing. They were written several years before that MSDN article and by a different person at Microsoft. He'll be out of the office for the next week. They are also not the same thing as the yuv2avi code distributed by S. Worral. In regard to the color conversion formulas, I think they use a conversion matrix that is closer to the 60 Hz coefficients of ITU-R BT.709 rather than the coefficients used in the MSDN article (which are based on ITU-R BT.601 and are thus equivalent to the 50 Hz coefficients for ITU-R BT.709 rather than the 60 Hz coefficients). I'm not sure about this -- the subroutines within the code support a number of different sets of conversion coefficients and I haven't verified which one is being used, but that is what I was told some time ago. I don't yet know how they do the upsampling and downsampling, but I would not be surprised if I learned that their resampling methods were sloppier than those in the MSDN article. Best Regards, -Gary Sullivan +> -----Original Message----- +> From: Rosiles Gerardo-ra9355 [mailto:Gerardo.Rosiles@motorola.com] +> Sent: Wednesday, May 07, 2024 1:33 PM +> To: 'Wesley De Neve'; Rosiles Gerardo-ra9355; +> technotes@lists.m4if.org +> Subject: RE: [M4IF Technotes] YCrCb to RGB conversion +> +> +> Hello, +> +> One more thing that catched my eye on the MSDN explanation +> is that the chroma upsamling they propose is not 100% +> correct. They do not correct for the half sample shift that +> is introduced during the 4:2:2 to 4:2:0 down conversion (in +> MPEG-2 terms). This effectively saves you half of the +> computations required on 4:2:0 to 4:2:2. Not correcting for +> this phase misalignment could potentially introduce color +> shifts. However, I suspect that after compression the chroma +> information has been quantized so much that the 1/2 pel +> shift does not matter. +> +> Your experiment without compression also points in this +> direction, but I'll make sure you test with a few sequences +> with and without the phase alignment to be sure it meets +> your quality expectative. +> +> FYI, for interlaced video testing I have used the VQEG +> sequences. I have read reports (see +> http://www.hometheaterhifi.com/volume_8_2/dvd-benchmark-speci +> al-report-chroma-bug-4-2001.html) of disturbing artifacts +> introduced by processing interlaced data as progressive data +> for chroma upsampling. +> +> Regards, +> +> Gerardo +> +> -----Original Message----- +> From: Wesley De Neve [mailto:Wesley.DeNeve@ugent.be] +> Sent: Wednesday, May 07, 2024 2:35 PM +> To: Rosiles Gerardo-ra9355; technotes@lists.m4if.org +> Subject: Re: [M4IF Technotes] YCrCb to RGB conversion +> +> +> Hi Gerardo, Tobias, all, +> +> Rosiles Gerardo-ra9355 wrote: +> > Hi Wesley, +> > +> > This method is correct in DSP terms. The difference in +> implementation +> > could be the filters that are actually used. One more thing to be +> > aware of is if you are working with interlaced or +> progessive frames. +> > The spatial relations between Chroma and Luma are +> different between +> > the two scans. For interlaced scan a different set of filter taps +> > would be required. It seems this site explains only the case for +> > progressive conversions. +> +> good to know that. +> +> > Do the yuvtoavi tools support interlaced standard conversion? +> +> I don't think they support deinterlacing, but I'm not sure +> about that due to the lack of documentation. The input test +> sequences were normally progressive. +> +> I'm interested in the applied formulas because there has to +> be a large difference between the ones applied in the +> avitoyuv/yuvtoavi tools and those implemented by the tool as +> found on +> http://www.ee.surrey.ac.uk/Personal/S.Worrall/dloads/yuv2avi. zip. I did a test with the foreman test sequence in which I placed the first frame in an AVI file by making use of yuv2avi (also doing a conversion to the RGB888 colorspace). After that I immediately extracted the frame in question from the AVI file by the avitoyuv tool (doing a conversion back from RGB888 to YCrCb). Result: Y-PSNR +/- 20 dB (and this without compression...). Today I've seen in the history of this mailinglist that yuv2avi indeed has some strange behaviour (http://lists.m4if.org/pipermail/technotes/2002-July/000982.html). As Tobias already mentioned, it's indeed better to implement those tools by yourself and I've done that for PSNR calculation, for RGB/YCrCb conversion (based on the equations as described by MSDN), and for putting YCrCb frames in the MOV file format (not yet for the AVI file format). On the other hand, I do not want to invent the wheel twice ;-). Thanks for the replies, Wesley _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From lmwang brovic.com Thu May 8 10:40:30 2003 From: lmwang brovic.com (lmwang) Date: Wed Jul 30 14:10:25 2003 Subject: [M4IF Technotes] =?iso-8859-1?Q?=B4=F0=B8=B4:_=5BM4IF_Technotes=5D_YCrCb_to_RGB_conversion?= In-Reply-To: <01b401c314cf$cce01850$0100a8c0@dune> Message-ID: <000001c31502$cfd8ddc0$3601010a@lmwang> Below is my test sample to yuv2avi,for yuv420 to avi(cif), it works. Use avilib. #include "avilib.h" #include "stdio.h" /* A simple test tool of yuv2avi */ int main(int argc,char* argv[]) { FILE* fpYUV; char input_yuv[352*288*3/2]; avi_t* pAviHandle; char VideoFmtYV12[4] = \ // YCrCb { 'Y','V','1','2' }; char VideoFmtIYUV[4] = \ // YCbCr { 'I','Y','U','V' }; fpYUV = fopen("test.yuv","rb"); if(!fpYUV) { printf("fopen failed \n"); return -1; } pAviHandle = AVI_open_output_file("test.avi"); if(! pAviHandle) { printf("avi file open failed \n"); return -1; } AVI_set_video(pAviHandle,352,288,25,VideoFmtIYUV); while(!feof(fpYUV)) { fread(input_yuv,1,352*288*3/2, fpYUV); AVI_write_frame(pAviHandle,input_yuv,352*288*3/2); }; // close open file AVI_close(pAviHandle); fclose(fpYUV); } Best Regards, Limin -----????----- ???: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] ?? Wesley De Neve ????: 2003?5?8? 3:35 ???: Rosiles Gerardo-ra9355; technotes@lists.m4if.org ??: Re: [M4IF Technotes] YCrCb to RGB conversion Hi Gerardo, Tobias, all, Rosiles Gerardo-ra9355 wrote: > Hi Wesley, > > This method is correct in DSP terms. The difference in > implementation could be the filters that are actually used. One more > thing to be aware of is if you are working with interlaced or > progessive frames. The spatial relations between Chroma and Luma are > different between the two scans. For interlaced scan a different set > of filter taps would be required. It seems this site explains only > the case for progressive conversions. good to know that. > Do the yuvtoavi tools support interlaced standard conversion? I don't think they support deinterlacing, but I'm not sure about that due to the lack of documentation. The input test sequences were normally progressive. I'm interested in the applied formulas because there has to be a large difference between the ones applied in the avitoyuv/yuvtoavi tools and those implemented by the tool as found on http://www.ee.surrey.ac.uk/Personal/S.Worrall/dloads/yuv2avi.zip. I did a test with the foreman test sequence in which I placed the first frame in an AVI file by making use of yuv2avi (also doing a conversion to the RGB888 colorspace). After that I immediately extracted the frame in question from the AVI file by the avitoyuv tool (doing a conversion back from RGB888 to YCrCb). Result: Y-PSNR +/- 20 dB (and this without compression...). Today I've seen in the history of this mailinglist that yuv2avi indeed has some strange behaviour (http://lists.m4if.org/pipermail/technotes/2002-July/000982.html). As Tobias already mentioned, it's indeed better to implement those tools by yourself and I've done that for PSNR calculation, for RGB/YCrCb conversion (based on the equations as described by MSDN), and for putting YCrCb frames in the MOV file format (not yet for the AVI file format). On the other hand, I do not want to invent the wheel twice ;-). Thanks for the replies, Wesley _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From rob.koenen m4if.org Wed May 7 23:36:00 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] FGS profiles... In-Reply-To: Message-ID: FGS can work on Advanced Simple and Simple Visual Profiles as base layers. "Version 4" may have been true at some point but now has fairly little meaning. The most useful reference is: ISO/IEC 14496-2:2001/Amd 2:2002 - "Streaming video profile" See http://www.iso.ch/iso/en/StandardsQueryFormHandler.StandardsQueryFormHandler ?languageCode=en&keyword=&lastSearch=false&isoNumber=14496&isoPartNumber=&IC S=&stageCode=&stageDate=&committee=ALL&subcommittee=&scope=CATALOGUE&sortOrd er=ISO (remove any line breaks that may have been introduced by the reflector) Rob > -----Original Message----- > From: sunx [mailto:sunx@pollux.usc.edu] > Sent: Monday, May 05, 2024 23:52 > To: Ashok Yerneni > Cc: technotes@lists.m4if.org > Subject: Re: [M4IF Technotes] FGS profiles... > > > > MPEG Version 4 defines the FGS profile. The base layer is > almost the same as the simple profile. > > On Mon, 5 May 2003, Ashok Yerneni wrote: > > > Which version of the ISO spec defines the FGS profile? Is the base > > layer in FGS supposed to have the same syntax as Advanced simple or > > simple profile? Are there any encoders out there that support this > > encoding scheme? > > > > Regards, > > > > Ashok > > > > --- > > Ashok Yerneni > > VP of Engineering and CTO > > BroadWare Technologies > > ashok@broadware.com > > 408-342-2630(off) > > 408-342-2601(fax) > > > > > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technot> es > From oamato wanadoo.fr Thu May 8 11:27:32 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] Fw: IBM Toolkit for MPEG-4 is now available as a technology download from IBM alphaWorks References: Message-ID: <007701c3153b$b1339f70$0a00000a@beck> Dear Michelle, > We have posted the IBM Toolkit for MPEG-4 on IBM alphaWorks as a > technology download from http://www.alphaworks.ibm.com/tech/tk4mpeg4. Thanks a lot to IBM for this very interesting release. > XMTBatch is a tool for creating rich MPEG-4 content beyond simple audio > and video. Both AVgen and XMTBatch are based on the XMT standard (MPEG-4 > in XML) technology. Are there some restrictions on the Systems profiles we can use with XMTBatch, or can we edit freely any XMT files ? You say we can use DivX to encode the video track, but it seems that AVgen only supports Simple Profile ( DivX is an Advanced Simple Profile implementation ). So, is it allowed to use DivX ASP tools to encode the video track with AVgen ( B-Frames, 1/4 pel, GMC ) ? Which audio and video profiles are allowed to produce 3GPP compliant content with AVgen ? > M4Play is an MPEG-4 playback application. Which Systems profiles are implemented into M4Play ? Best regards, Olivier From sundar tataelxsi.co.in Thu May 8 18:28:05 2003 From: sundar tataelxsi.co.in (T Sundar Murthy) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] moof and traf atom support in MP4 Players? Message-ID: <3EBA464D.B29BA24E@tataelxsi.co.in> Hi, Are there any players that support fragmented movie files (MP4 files with 'moof' and 'traf' atom). Regards Sundar From iamgfzhou sina.com Thu May 8 23:17:48 2003 From: iamgfzhou sina.com (Zhou Guanfeng) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] About Size Conversion Message-ID: <000c01c3156c$9ae9f120$020000c0@zhougf> Hi, Everyone, Is the Size Conversion of Shape coding included in MPEG4 Core Profile? thanks. ZGF -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030508/447cc434/attachment.html From gchandra tataelxsi.co.in Fri May 9 10:19:57 2003 From: gchandra tataelxsi.co.in (Chandra Sekhar Reddy G) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] ASP Video conformance test streams Message-ID: <011501c315de$0fa4d6d0$b514010a@telxsi.com> Hi, May I know from where can I get 1. the conformance-test-streams for MPEG4-Video-ASP. 2. the reference decoder for MPEG4-Video-ASP. "microsoft-v2.4-030305-NTU.zip" does not do QPel-MC correctly. Thanks, Chandra From ramesh.vinnakota exgate.tek.com Thu May 8 22:22:43 2003 From: ramesh.vinnakota exgate.tek.com (ramesh.vinnakota@exgate.tek.com) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] Conformance test streams Message-ID: <301A812E6528D511A8F70008C71E57860133647E@AP-BANG-M02> Hi I am looking for conformance test streams for the following profiles@levels. Would appreciate if any one could point me to suitable links from where I can download them 1. Advanced simple profile@ Level 0 and 5 2. Main Profile @Level 2,3,4 3. N-Bit Profile @Level 2 4. ISMA compliant files Regards Ramesh Vinnakota Tektronix Engineering Development India Ph: 91-80-2215535 ext 3438 From ramki emuzed.com Fri May 9 12:02:57 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] Conformance test streams References: <301A812E6528D511A8F70008C71E57860133647E@AP-BANG-M02> Message-ID: <02a601c315ec$790fce50$1b0aa8c0@blr.emuzed.com> Hi, Check this URL for links to conformance streams. http://www.m4if.org/resources.php regards, ramkishor Architect - Video Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: To: Sent: Friday, May 09, 2024 9:52 AM Subject: [M4IF Technotes] Conformance test streams > Hi > > I am looking for conformance test streams for the following > profiles@levels. Would appreciate if any one could point me to suitable > links from where I can download them > > 1. Advanced simple profile@ Level 0 and 5 > 2. Main Profile @Level 2,3,4 > 3. N-Bit Profile @Level 2 > 4. ISMA compliant files > > > Regards > > Ramesh Vinnakota > > Tektronix Engineering Development India > Ph: 91-80-2215535 ext 3438 > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From joeywu avermedia.com.tw Fri May 9 14:04:15 2003 From: joeywu avermedia.com.tw (JoeyWu) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] Question about ACDC prediction Message-ID: <022901c315e8$70685eb0$fe03010a@avermedia.com.tw> hi all: The standard wrote that if the prediction block is outside of the boundary, then all the prediction coefficients of that block are assumed to be zero. However, It does not mention about what to do if the prediction block is not a intra coded macroblock. Should those AC coefficients from non-intra coded macroblock perform the same procedure as those predicted from intra coded block or just assumed to be zero? Thanks in advance Joey -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030509/0914c19d/attachment.html From howardchang avermedia.com.tw Fri May 9 14:55:39 2003 From: howardchang avermedia.com.tw (Hao-Chieh Chang) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] [M4IF Technotes]Question about AC/DC Prediction Message-ID: <032201c315ef$9e3e83d0$5f03010a@avermedia.com.tw> Hi, I would like to know if all prediction blocks are non-intra coded, which kind of AC coefficients are used for AC prediction, zero or just the same procedure as intra-coded prediction block used? Thanks! Howard From saumishra neomagic.com Fri May 9 16:57:18 2003 From: saumishra neomagic.com (Saurabh Mishra) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] MP4 file format description? Message-ID: <008a01c31615$93cbff10$e429a8c0@pcsmishra> hi Where can I find a detailed description of the MP4 file format?can someone tell me that What is in the header information in mp4 file format? how many bytes header is there in mp4 file?? if possible,How we can we extract the header information from that? thanx in advance, Saurabh -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030509/c45fd95c/attachment.html From ramki emuzed.com Fri May 9 18:50:14 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] MP4 file format description? References: <008a01c31615$93cbff10$e429a8c0@pcsmishra> Message-ID: <05c401c31625$5de89330$1b0aa8c0@blr.emuzed.com> Hi, MP4 file format is based on quick time file format. You can download documents on MP4 file format, QT file format etc. from this link http://www.eeng.dcu.ie/~cranleyn/Links/links.html regards, ramkishor Architect - Video Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: Saurabh Mishra To: technotes@lists.m4if.org Sent: Friday, May 09, 2024 3:57 PM Subject: [M4IF Technotes] MP4 file format description? hi Where can I find a detailed description of the MP4 file format?can someone tell me that What is in the header information in mp4 file format? how many bytes header is there in mp4 file?? if possible,How we can we extract the header information from that? thanx in advance, Saurabh -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030509/a9beb6a1/attachment.html From son.mpeg4 laposte.net Fri May 9 16:32:33 2003 From: son.mpeg4 laposte.net (=?iso-8859-1?Q?son.mpeg4@laposte.net?=) Date: Wed Jul 30 14:10:26 2003 Subject: [M4IF Technotes] =?iso-8859-1?Q?QuickTime's_Darwin_Streaming_Server_?= Message-ID: Hello every body and all MPEG4 experts, I am currently facing a problem with QuickTime's Darwin Streaming Server and I thought you guys might be of some help. I have installed Darwin Streaming Server and am now trying to run it. I have set up a login and password, as described in the instructions. These login and password are required to access and configure the administration parameters prior to run Darwin Streaming Server. But unfortunately, when trying to actually access the administrator configuration page, the access is denied for no particularly apparent reason. Could you please help me on this ? Thanks ! -- Son.MPEG4 son.mpeg4@laposte.net Acc?dez au courrier ?lectronique de La Poste : www.laposte.net ; 3615 LAPOSTENET (0,34?/mn) ; t?l : 08 92 68 13 50 (0,34?/mn)" From 94426082 eeng.dcu.ie Fri May 9 17:27:32 2003 From: 94426082 eeng.dcu.ie (Nikki Cranley) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server & File Format Links! References: Message-ID: <062201c3163f$85dc8bc0$70690a0a@pel.eeng.dcu.ie> You'd be better addressing those issues to the DSS developers/users lists! streaming-server-developers@lists.apple.com streaming-server-users@lists.apple.com The problem sounds like you haven't configured your qtaccess, qtgroups or qtusers files! See the dss site for details on how this should be done - or alternatively I can send you these. Rgds, Nikki PS. ramkishor - thank you for mentioning my site with all my accumulated links! Hope its useful to everyone and if some links are dead - I will try someday to get around to fixing all the links but unfortunately my research at the moment requires me to do ten million other things a day! Also - Id like to mention that I have read the MPEG-4 Book and there is a very good concise chapter explaining the file format! I would recommend it to all! Nikki Cranley, Performance Engineering Lab, Mobile Multimedia, DCU School of Engineering, S220 UCD Dept. of Computer Science, A006 ************************************************* PEL LAB: http://www.eeng.dcu.ie/~pel/ RESEARCH: http://www.eeng.dcu.ie/~cranleyn/ ART: http://www.eeng.dcu.ie/~cranleyn/art/ ************************************************* ----- Original Message ----- From: To: "technotes" Sent: Friday, May 09, 2024 2:32 PM Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server Hello every body and all MPEG4 experts, I am currently facing a problem with QuickTime's Darwin Streaming Server and I thought you guys might be of some help. I have installed Darwin Streaming Server and am now trying to run it. I have set up a login and password, as described in the instructions. These login and password are required to access and configure the administration parameters prior to run Darwin Streaming Server. But unfortunately, when trying to actually access the administrator configuration page, the access is denied for no particularly apparent reason. Could you please help me on this ? Thanks ! -- Son.MPEG4 son.mpeg4@laposte.net Acc?dez au courrier ?lectronique de La Poste : www.laposte.net ; 3615 LAPOSTENET (0,34?/mn) ; t?l : 08 92 68 13 50 (0,34?/mn)" _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From rob.koenen m4if.org Fri May 9 09:29:17 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server In-Reply-To: Message-ID: <000f01c3163f$c3098e80$b60a010a@corp.intertrust.com> This is not really an MPEG-4 question, but an Apple product question. While someone here may know the answer (and If you do, don't hesitate providing it) we should keep the list for the "real" MPEG-4 questions. Kind Regards, Rob > -----Original Message----- > From: son.mpeg4@laposte.net [mailto:son.mpeg4@laposte.net] > Sent: Friday, May 09, 2024 06:33 > To: technotes > Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server > > > Hello every body and all MPEG4 experts, > > I am currently facing a problem with QuickTime's Darwin > Streaming Server and I thought you guys might be of some help. > > I have installed Darwin Streaming Server and am now trying to > run it. I have set up a login and password, as described in > the instructions. These login and password are required to > access and configure the administration parameters prior to > run Darwin Streaming Server. But unfortunately, when trying > to actually access the administrator configuration page, the > access is denied for no particularly apparent reason. Could > you please help me on this ? > > Thanks ! > > -- Son.MPEG4 > son.mpeg4@laposte.net > > Accédez au courrier électronique de La Poste : www.laposte.net ; > 3615 LAPOSTENET (0,34€/mn) ; tél : 08 92 68 13 50 (0,34€/mn)" > > > > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technot> es > From mbatura yazaki-na.com Fri May 9 12:33:01 2003 From: mbatura yazaki-na.com (Manu Batura) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server Message-ID: Hi, Check two things. 1. You have started the streaming admin server perl script. 2. You are using the port as specified in the installation (1220 probably). There should be a mailing list for Darwin Server. That would be a better place to post. Regards, Manu >>> "son.mpeg4@laposte.net" 05/09/03 09:32AM >>> Hello every body and all MPEG4 experts, I am currently facing a problem with QuickTime's Darwin Streaming Server and I thought you guys might be of some help. I have installed Darwin Streaming Server and am now trying to run it. I have set up a login and password, as described in the instructions. These login and password are required to access and configure the administration parameters prior to run Darwin Streaming Server. But unfortunately, when trying to actually access the administrator configuration page, the access is denied for no particularly apparent reason. Could you please help me on this ? Thanks ! -- Son.MPEG4 son.mpeg4@laposte.net Acc?dez au courrier ?lectronique de La Poste : www.laposte.net ; 3615 LAPOSTENET (0,34?/mn) ; t?l : 08 92 68 13 50 (0,34?/mn)" _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From tims apple.com Fri May 9 10:51:01 2003 From: tims apple.com (Tim Schaaff) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] QuickTime's Darwin Streaming Server In-Reply-To: Message-ID: <6A1D44AD-823E-11D7-8444-000393719926@apple.com> This question is best directed to Apple's QuickTime Streaming Server e-mail list. Here's a link to that list: http://lists.apple.com/mailman/listinfo/streaming-server-developers Best, Tim ______________________________________________ Tim Schaaff Vice-President, Interactive Media Group Apple, Inc. 1 Infinite Loop, MS 302-3KS Cupertino, CA 95014 USA voice: 408-862-7753 fax: 408-974-5426 ______________________________________________ On Friday, May 9, 2003, at 06:32 AM, son.mpeg4@laposte.net wrote: > Hello every body and all MPEG4 experts, > > I am currently facing a problem with QuickTime's Darwin Streaming > Server and I thought you guys might be of some help. > > I have installed Darwin Streaming Server and am now trying to run it. > I have set up a login and password, as described in the instructions. > These login and password are required to access and configure the > administration parameters prior to run Darwin Streaming Server. But > unfortunately, when trying to actually access the administrator > configuration page, the access is denied for no particularly apparent > reason. > Could you please help me on this ? > > Thanks ! > > -- Son.MPEG4 > son.mpeg4@laposte.net > > Accédez au courrier électronique de La Poste : www.laposte.net ; > 3615 LAPOSTENET (0,34€/mn) ; tél : 08 92 68 13 50 (0,34€/mn)" > > > > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From garysull windows.microsoft.com Fri May 9 14:06:12 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] [M4IF Technotes]Question about AC/DC Prediction Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246024794CA@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Zero. This wasn't clear in the draft standard and a corrigendum item is being worked on to fix that. -Gary +> -----Original Message----- +> From: Hao-Chieh Chang [mailto:howardchang@avermedia.com.tw] +> Sent: Thursday, May 08, 2024 10:56 PM +> To: Technotes@lists.m4if.org +> Cc: ICIP-RD-???; ICIP-RD-??? +> Subject: [M4IF Technotes] [M4IF Technotes]Question about +> AC/DC Prediction +> +> +> Hi, +> +> I would like to know if all prediction blocks are non-intra +> coded, which +> kind of AC coefficients are used for AC prediction, zero or +> just the same +> procedure as intra-coded prediction block used? +> +> Thanks! +> +> Howard +> +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> From mykim us.ibm.com Fri May 9 21:59:29 2003 From: mykim us.ibm.com (Michelle Y Kim) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] IBM Toolkit for MPEG-4 is now available as a technology download from IBM alphaWorks In-Reply-To: <007701c3153b$b1339f70$0a00000a@beck> Message-ID: Dear Olivier, >Are there some restrictions on the Systems profiles we can use with XMTBatch, or can we edit freely any XMT files ? XMTBatch supports both XMT-O and XMT-A textual format. XMT-A is the format that is a one-to-one mapping to the MPEG-4 binary format, XMT-O is a higher level format more comparable to SMIL, that is, in our opinion, much easier to create content with. Think in some ways of writing in assembly language versus C++. In XMT-A (assembler) we support encoding of all nodes with the exception of Script and Proto, and we have no support for quantization (nor predictive array coding). So this covers most profiles but for the exceptions indicated. In XMT-O we have concentrated on support for 2D media in this higher level format and XMTBatch compiles/creates content whose target is around the Main2D SceneGraph profile along with up to Advanced 2D Graphics profile. (Although we support 3D in XMT-A we do not as yet in XMT-O). > is it allowed to use DivX ASP tools to encode the video track with AVgen ( B-Frames, 1/4 pel, GMC ) ? For the inclusion of media we support mp3, aac and MPEG-4 video. Note that we do not have encoders but can 'format' pre-encoded streams into the mp4 file format. Our player and preview windows in AVgen and XMTBatch support playback of mp3, low complexity AAC and Simple Profile MPEG-4 video. However we are not limited to these profiles when it comes to 'formatting' encoded streams into an mp4 file and so AVGen can handle putting Advanced Simple Profile streams into mp4 format (though you cannot preview or play the stream back as our decoder only handles Simple Profile Video tools, i.e., the decoder in the toolkit does not handle B-Frames, 1/4pel or GMC). > Which audio and video profiles are allowed to produce 3GPP compliant content with AVgen ? We support Low Complexity AAC and MPEG-4 Simple Profile video, and we can hint according to RFC 3016 as required by 3GPP. >Which Systems profiles are implemented into M4Play ? The IBM Toolkit for MPEG-4 released on alphaWorks does not contain all the technologies we have developed for it. The released player is targetted to SceneGraph profile Main2D and up to Advanced 2D Graphics profile. However some features are omitted and it is thus not fully conformant to the letter of the profile. There are licensing and other issues behind this decision. The toolkit does however contain a very useful set for evaluation and we are planning to release further features in future updates. "Olivier Amato" Sent by: technotes-admin@lists.m4if.org 05/08/2023 04:27 AM To: , Michelle Y Kim/Watson/IBM@IBMUS cc: Subject: Re: [M4IF Technotes] Fw: IBM Toolkit for MPEG-4 is now available as a technology download from IBM alphaWorks Dear Michelle, > We have posted the IBM Toolkit for MPEG-4 on IBM alphaWorks as a > technology download from http://www.alphaworks.ibm.com/tech/tk4mpeg4. Thanks a lot to IBM for this very interesting release. > XMTBatch is a tool for creating rich MPEG-4 content beyond simple audio > and video. Both AVgen and XMTBatch are based on the XMT standard (MPEG-4 > in XML) technology. Are there some restrictions on the Systems profiles we can use with XMTBatch, or can we edit freely any XMT files ? You say we can use DivX to encode the video track, but it seems that AVgen only supports Simple Profile ( DivX is an Advanced Simple Profile implementation ). So, is it allowed to use DivX ASP tools to encode the video track with AVgen ( B-Frames, 1/4 pel, GMC ) ? Which audio and video profiles are allowed to produce 3GPP compliant content with AVgen ? > M4Play is an MPEG-4 playback application. Which Systems profiles are implemented into M4Play ? Best regards, Olivier _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030509/0becefef/attachment.html From cychoon hotmail.com Sat May 10 12:36:30 2003 From: cychoon hotmail.com (Chang Yoong Choon) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] About YUV12 codecs? Message-ID: An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030510/a0d65621/attachment.html From iamgfzhou sina.com Mon May 12 12:12:46 2003 From: iamgfzhou sina.com (Zhou Guanfeng) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] VHDL implementation of MPEG-4 Message-ID: <001901c31834$5db5afe0$020000c0@zhougf> Hi£¬ Our mpeg-4 team are now focus on the VHDL implementation of MPEG-4 core level 2, aiming at an IP solid core. But we have less exprience, and we are not clear how many gates the different parts(such as ME,shape coding, etc) requirs. Does anyone have the exprience of hardware implementation of MPEG-4? Please give us your consultation. Thanks in advance. best regards Zhou GF DSP lab. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030512/cc4754e8/attachment.html From squear gmx.de Mon May 12 17:01:39 2003 From: squear gmx.de (Sebastian Voigt) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] PROTO Insertion Message-ID: <003401c3188f$040b8680$9002a8c0@baphomet> Hello I like to update an existing scenedescription with an new PROTO-Node. Can I insert this PROTO-Node with BIFS-Insertion-Command, Insert Node? Best regards Sebastian -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030512/dc28ac8f/attachment.html From Robert.Turney xilinx.com Mon May 12 15:15:23 2003 From: Robert.Turney xilinx.com (Robert Turney) Date: Wed Jul 30 14:10:27 2003 Subject: [M4IF Technotes] VHDL implementation of MPEG-4 References: <001901c31834$5db5afe0$020000c0@zhougf> Message-ID: <3EC00EEB.82A53A8F@xilinx.com> Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: robert.turney.vcf Type: text/x-vcard Size: 482 bytes Desc: Card for Robert Turney Url : /pipermail/mp4-tech/attachments/20030512/0e1468a5/robert.turney.bin From lzm02 mails.tsinghua.edu.cn Tue May 13 09:56:43 2003 From: lzm02 mails.tsinghua.edu.cn (Li Zhengming) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] =?gb2312?B?V2hlcmUgdG8gZmluZCB0aGUgQUFDIGNvZGVjo78=?= Message-ID: <001601c318ea$85ad5910$14496fa6@freebreeze> Dear all, I am trying to find an aac codec now, and need your help. I have looking for it on the Internet for one day and haven't found any valid website where such a codec can be downloaded yet. Any information is welcome! Thanks! Li Zhengming ÀîÕùÃù ------------------------------------------ From lzm02 mails.tsinghua.edu.cn Tue May 13 10:43:37 2003 From: lzm02 mails.tsinghua.edu.cn (Li Zhengming) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Stream mp3 audio through helix server? Message-ID: <001501c318f1$1304ea20$14496fa6@freebreeze> Dear all, It seems reasonable that a hinted mp4 file consists of mpeg4 encoded video and mp3 audio, doesn't it? However, when I tried to stream such a mp4 file through a helix server it doesn't work, for the Quicktime player couldn't playback the mp4 file. Why should this happen? Is it because that a hinted mp4 file with mp3 as audio can't be streamed, or is it because that I have made some mistakes while trying to stream the mp4 file? Thanks! Li Zhengming ------------------------------------------ From bfelts envivio.com Mon May 12 20:31:31 2003 From: bfelts envivio.com (Boris Felts) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] =?utf-8?Q?RE:_=5BM4IF_Technotes=5D_Where_to_find_the_AAC_codec=C2=A3=C2=BF?= In-Reply-To: <0ADFC3A378B7B2408351059DCC465DAD3601FA@xchange.sfo.envivio.com> Message-ID: <0ADFC3A378B7B2408351059DCC465DAD0490DD@xchange.sfo.envivio.com> All you are looking for is indicated on: http://www.m4if.org/resources.php Boris > -----Original Message----- > From: technotes-admin@lists.m4if.org [mailto:technotes- > admin@lists.m4if.org] On Behalf Of Li Zhengming > Sent: Monday, May 12, 2024 5:57 PM > To: M4if Technotes > Subject: [M4IF Technotes] Where to find the AAC codec?? > > Dear all, > > I am trying to find an aac codec now, and need your help. I have looking > for it on the Internet for one day and haven't found any valid website > where such a codec can be downloaded yet. > > Any information is welcome! Thanks! > > Li Zhengming > > ??? > ------------------------------------------ > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes From mathijn elhorst.com Tue May 13 11:22:59 2003 From: mathijn elhorst.com (Mathijn Elhorst) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] PROTO Insertion In-Reply-To: <003401c3188f$040b8680$9002a8c0@baphomet> References: <003401c3188f$040b8680$9002a8c0@baphomet> Message-ID: <3EC0AB63.3020907@elhorst.com> Hi Sebastian, According to the current specs, PROTO definitions are decoded during a SceneReplace command only. Hence, extending the list of PROTOs at a later stage is not possible without throwing everything away first. However, in amendment 4 of the systems specs it is made possible to insert and delete PROTO definitions. To my knowledge this part of the spec is still in draft. Best regards, Mathijn Sebastian Voigt wrote: > Hello > > I like to update an existing scenedescription with an new PROTO-Node. > Can I insert this PROTO-Node with BIFS-Insertion-Command, Insert Node? > Best regards > > Sebastian From praveen.athanki wipro.com Tue May 13 18:28:57 2003 From: praveen.athanki wipro.com (Praveen Athanki) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Regarding hinter Message-ID: <018701c31947$091c2e00$1aa5a8c0@GDYMCI104863> Hi Everyone, Can anyone please tell me if there are any softwares (preferably free downloads) available for generating hint track given a .mp4 file containing an AAC audio track and a MPEG-4 Video track ? Thanks & Regards, Praveen **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. *************************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030513/da2ba6f2/attachment.html From ramki emuzed.com Tue May 13 19:32:58 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Regarding hinter References: <018701c31947$091c2e00$1aa5a8c0@GDYMCI104863> Message-ID: <058901c31950$000a9f00$1b0aa8c0@blr.emuzed.com> Hi, You can use Quick time authoring solution (cost is around 30$) to do the same. regards, ramkishor Architect - Video Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: Praveen Athanki To: MPEG4 Subscriber List Sent: Tuesday, May 13, 2024 5:28 PM Subject: [M4IF Technotes] Regarding hinter Hi Everyone, Can anyone please tell me if there are any softwares (preferably free downloads) available for generating hint track given a .mp4 file containing an AAC audio track and a MPEG-4 Video track ? Thanks & Regards, Praveen **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. *************************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030513/95a9a32f/attachment.html From idimkovic nero.com Tue May 13 15:52:42 2003 From: idimkovic nero.com (Ivan Dimkovic) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Regarding hinter In-Reply-To: <018701c31947$091c2e00$1aa5a8c0@GDYMCI104863> Message-ID: <002101c3194e$8b0eeae0$2c02a8c0@cwx148xp> Hello, You might want to take a look at the MPEG4IP package from www.mpeg4ip.net - it has a tool called 'mp4creator' which can do hinting of .mp4 files Best Regards, -- Ivan -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of Praveen Athanki Sent: Tuesday, May 13, 2024 1:59 PM To: MPEG4 Subscriber List Subject: [M4IF Technotes] Regarding hinter Hi Everyone, Can anyone please tell me if there are any softwares (preferably free downloads) available for generating hint track given a .mp4 file containing an AAC audio track and a MPEG-4 Video track ? Thanks & Regards, Praveen **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. ************************************************************************ *** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030513/6173687b/attachment.html From s.voukelatos indigovision.com Tue May 13 16:36:33 2003 From: s.voukelatos indigovision.com (Stathis Voukelatos) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Looking for MPEG document Message-ID: <67336BF4D5D23C4AA30EC72DFCFCA6DF47BDEA@peebles.indigovision.com> Hi all, I am looking for document M2723 written by Y. L. Lee et al. It is mentioned in the MPEG-4 Visual spec and discusses methods for reducing the computational complexity of the deblocking and deringing filters using semaphores. Is the document publicly available somewhere or is it reserved for MPEG members only? Any help is appreciated, 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 From oamato wanadoo.fr Tue May 13 18:47:26 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Where to find the AAC codec References: <001601c318ea$85ad5910$14496fa6@freebreeze> Message-ID: <012a01c31966$fb3ec7a0$0a00000a@beck> > I am trying to find an aac codec now - http://rarewares.hydrogenaudio.org/aac.php Olivier From oamato wanadoo.fr Tue May 13 19:01:19 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:28 2003 Subject: [M4IF Technotes] Stream mp3 audio through helix server? References: <001501c318f1$1304ea20$14496fa6@freebreeze> Message-ID: <012e01c31968$e7f14db0$0a00000a@beck> > It seems reasonable that a hinted mp4 > file consists of mpeg4 encoded video > and mp3 audio, doesn't it? Not exactly, an MP4 hinted file is just an MP4 file prepared for streaming ( an hint track is added to help the server to stream the file ). > However, when I tried to stream such a > mp4 file through a helix server it doesn't > work, for the Quicktime player couldn't playback > the mp4 file. I think QT Player 6 and Helix Server only manage ISMA compliant content and ISMA has specified CELP and AAC-LC for audio coding. You then should prefer AAC-LC to MP3 for your audio track. Olivier From garysull windows.microsoft.com Tue May 13 17:58:53 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] YCrCb to RGB conversion Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246025745C5@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> I followed up further on this. I confirmed that an approximation of the 50 Hz BT.709 coefficients are the ones used in that Microsoft MPEG reference software tool. That is, kr = 0.2126, kb = 0.0722 (not kr = 0.299, kb = 0.114). For downsampling, I was told that the program uses filter tap values [40 88 88 40] / 256 (both horizontally and vertically). For upsampling: I was told that the program horizontally uses filter tap values [ 5, 11, -21, -37, 70, 228, 228, 70, -37, -21, 11, 5] / 256, and vertically it uses filter tap values [ 3, 7, -16, -32, 67, 227, 227, 67, -32, -16, 7, 3] / 256. Regarding the phase of the filtering, I believe that because these are both even-length symmetric filters, this kind of resampling will produce correct phase for the H.261, MPEG-1 and H.263 definitions of 4:2:0. But it will be a little off horizontally for the MPEG-2 and MPEG-4 definitions of 4:2:0. -Gary Sullivan +> -----Original Message----- +> From: Gary Sullivan [mailto:garysull@windows.microsoft.com] +> Sent: Wednesday, May 07, 2024 2:39 PM +> To: Rosiles Gerardo-ra9355; Wesley De Neve; technotes@lists.m4if.org +> Subject: RE: [M4IF Technotes] YCrCb to RGB conversion +> +> +> +> I am the first author on that MSDN article. Here is what I +> know. I am +> trying to find out more, but not promising anything. +> +> The half-sample shift issue is discussed in some detail in +> the section +> of the MSDN article on 4:2:0 to 4:4:4 conversion. +> Vertically, yes - the resampling is technically off-phase by half a +> sample. Horizontally, it depends on the definition of 4:2:0 +> -- if you +> use the definition in MPEG-2 or MPEG-4 visual, they are OK +> horizontally. +> As Gerardo indicates, the phase shift allowed in the MSDN +> article saves +> some computations and probably does not significantly harm visual +> quality. +> +> I believe the yuvtoavi and avitoyuv tools that Wesley mentioned as +> coming from Microsoft are not part of any Microsoft product. +> They were +> provided by a Microsoft MPEG participant as part of the MPEG-4 visual +> reference software package only, and only for purposes of aiding in +> doing quick experiments. They are undocumented and were +> never tested or +> inspected to make sure they are completely correct in any +> strict sense. +> There may even be more than one version of them floating +> around, and we +> aren't confident of what they are doing. They were written several +> years before that MSDN article and by a different person at +> Microsoft. +> He'll be out of the office for the next week. +> +> They are also not the same thing as the yuv2avi code +> distributed by S. +> Worral. +> +> In regard to the color conversion formulas, I think they use a +> conversion matrix that is closer to the 60 Hz coefficients of ITU-R +> BT.709 rather than the coefficients used in the MSDN article +> (which are +> based on ITU-R BT.601 and are thus equivalent to the 50 Hz +> coefficients +> for ITU-R BT.709 rather than the 60 Hz coefficients). I'm not sure +> about this -- the subroutines within the code support a number of +> different sets of conversion coefficients and I haven't +> verified which +> one is being used, but that is what I was told some time ago. +> +> I don't yet know how they do the upsampling and downsampling, but I +> would not be surprised if I learned that their resampling +> methods were +> sloppier than those in the MSDN article. +> +> Best Regards, +> +> -Gary Sullivan +> +> +> -----Original Message----- +> +> From: Rosiles Gerardo-ra9355 +> [mailto:Gerardo.Rosiles@motorola.com] +> +> Sent: Wednesday, May 07, 2024 1:33 PM +> +> To: 'Wesley De Neve'; Rosiles Gerardo-ra9355; +> +> technotes@lists.m4if.org +> +> Subject: RE: [M4IF Technotes] YCrCb to RGB conversion +> +> +> +> +> +> Hello, +> +> +> +> One more thing that catched my eye on the MSDN explanation +> +> is that the chroma upsamling they propose is not 100% +> +> correct. They do not correct for the half sample shift that +> +> is introduced during the 4:2:2 to 4:2:0 down conversion (in +> +> MPEG-2 terms). This effectively saves you half of the +> +> computations required on 4:2:0 to 4:2:2. Not correcting for +> +> this phase misalignment could potentially introduce color +> +> shifts. However, I suspect that after compression the chroma +> +> information has been quantized so much that the 1/2 pel +> +> shift does not matter. +> +> +> +> Your experiment without compression also points in this +> +> direction, but I'll make sure you test with a few sequences +> +> with and without the phase alignment to be sure it meets +> +> your quality expectative. +> +> +> +> FYI, for interlaced video testing I have used the VQEG +> +> sequences. I have read reports (see +> +> http://www.hometheaterhifi.com/volume_8_2/dvd-benchmark-speci +> +> al-report-chroma-bug-4-2001.html) of disturbing artifacts +> +> introduced by processing interlaced data as progressive data +> +> for chroma upsampling. +> +> +> +> Regards, +> +> +> +> Gerardo +> +> +> +> -----Original Message----- +> +> From: Wesley De Neve [mailto:Wesley.DeNeve@ugent.be] +> +> Sent: Wednesday, May 07, 2024 2:35 PM +> +> To: Rosiles Gerardo-ra9355; technotes@lists.m4if.org +> +> Subject: Re: [M4IF Technotes] YCrCb to RGB conversion +> +> +> +> +> +> Hi Gerardo, Tobias, all, +> +> +> +> Rosiles Gerardo-ra9355 wrote: +> +> > Hi Wesley, +> +> > +> +> > This method is correct in DSP terms. The difference in +> +> implementation +> +> > could be the filters that are actually used. One more +> thing to be +> +> > aware of is if you are working with interlaced or +> +> progessive frames. +> +> > The spatial relations between Chroma and Luma are +> +> different between +> +> > the two scans. For interlaced scan a different set of +> filter taps +> +> > would be required. It seems this site explains only the +> case for +> +> > progressive conversions. +> +> +> +> good to know that. +> +> +> +> > Do the yuvtoavi tools support interlaced standard conversion? +> +> +> +> I don't think they support deinterlacing, but I'm not sure +> +> about that due to the lack of documentation. The input test +> +> sequences were normally progressive. +> +> +> +> I'm interested in the applied formulas because there has to +> +> be a large difference between the ones applied in the +> +> avitoyuv/yuvtoavi tools and those implemented by the tool as +> +> found on +> +> http://www.ee.surrey.ac.uk/Personal/S.Worrall/dloads/yuv2avi. +> zip. +> +> I did a test with the foreman test sequence in which I +> placed the first +> frame in an AVI file by making use of yuv2avi (also doing a +> conversion +> to the RGB888 colorspace). After that I immediately +> extracted the frame +> in question from the AVI file by the avitoyuv tool (doing a +> conversion +> back from RGB888 to YCrCb). Result: Y-PSNR +/- 20 dB (and +> this without +> compression...). Today I've seen in the history of this +> mailinglist that +> yuv2avi indeed has some strange behaviour +> (http://lists.m4if.org/pipermail/technotes/2002-July/000982.html). +> +> As Tobias already mentioned, it's indeed better to implement +> those tools +> by yourself and I've done that for PSNR calculation, for RGB/YCrCb +> conversion (based on the equations as described by MSDN), and for +> putting YCrCb frames in the MOV file format (not yet for the AVI file +> format). On the other hand, I do not want to invent the +> wheel twice ;-). +> +> Thanks for the replies, +> Wesley +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> From mylan.chen philips.com Wed May 14 09:57:33 2003 From: mylan.chen philips.com (mylan.chen@philips.com) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Regarding hinter Message-ID: The MPEG4IP can be used, which is free. Quicktime Pro too, but need to pay about $30. "Praveen Athanki" Sent by: technotes-admin@lists.m4if.org 2024-05-13 07:58 PM To: "MPEG4 Subscriber List" cc: (bcc: Mylan Chen/SHA/RESEARCH/PHILIPS) Subject: [M4IF Technotes] Regarding hinter Classification: Hi Everyone, Can anyone please tell me if there are any softwares (preferably free downloads) available for generating hint track given a .mp4 file containing an AAC audio track and a MPEG-4 Video track ? Thanks & Regards, Praveen **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. *************************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030514/a4b4b555/attachment.html From padma-volety dishnetdsl.net Wed May 14 10:24:10 2003 From: padma-volety dishnetdsl.net (Padmavathi Volety) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Dual-Prime motion estimation Message-ID: <005d01c319cc$7a6ea440$3c0ca8c0@cute> Skipped content of type multipart/alternative From ramki emuzed.com Wed May 14 11:17:57 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Dual-Prime motion estimation References: <005d01c319cc$7a6ea440$3c0ca8c0@cute> Message-ID: <020501c319d4$03a7b6f0$1b0aa8c0@blr.emuzed.com> Hi, Go through the book Digital Video:An Introduction to MPEG-2 by Barry G.Haskell. The book explains all these in detail. regards, ramkishor Architect - Video Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: Padmavathi Volety To: technotes@lists.m4if.org Sent: Wednesday, May 14, 2024 9:24 AM Subject: [M4IF Technotes] Dual-Prime motion estimation Hello, Can anyone explain about dual-prime motion estimation in MPEG2 video compression. How dual-prime increases the accuracy of the motion estimation? Why field motion compensation has to be done in FRAME pictures. How it is advantageous over frame motion compensation? With Regards, Padmavathi, _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Volety Padmavathi Devi CuTe Solutions Pvt. Ltd., 4-7-145/2, Nagendra Nagar Colony, Habsiguda, Hyderabad-500007, India. Ph:(W) (+)91-40-27153640, 26215879 (H) (+)91-40-27225363, 27225392 -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030514/02913114/attachment.html From praveen.athanki wipro.com Wed May 14 11:50:18 2003 From: praveen.athanki wipro.com (Praveen Athanki) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Regarding hinter References: Message-ID: <00a001c319d8$82754660$1aa5a8c0@GDYMCI104863> Hi Everyone, Thank you all for your responses with which I was able to locate the hinter and use the same for my understanding. Warm Regards, Praveen. ----- Original Message ----- From: mylan.chen@philips.com To: Praveen Athanki Cc: MPEG4 Subscriber List ; technotes-admin@lists.m4if.org Sent: Wednesday, May 14, 2024 6:27 AM Subject: Re: [M4IF Technotes] Regarding hinter The MPEG4IP can be used, which is free. Quicktime Pro too, but need to pay about $30. "Praveen Athanki" Sent by: technotes-admin@lists.m4if.org 2024-05-13 07:58 PM To: "MPEG4 Subscriber List" cc: (bcc: Mylan Chen/SHA/RESEARCH/PHILIPS) Subject: [M4IF Technotes] Regarding hinter Classification: Hi Everyone, Can anyone please tell me if there are any softwares (preferably free downloads) available for generating hint track given a .mp4 file containing an AAC audio track and a MPEG-4 Video track ? Thanks & Regards, Praveen **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. *************************************************************************** **************************Disclaimer************************************ Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. *************************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030514/0d9b181b/attachment.html From xuhuigang454 sohu.com Wed May 14 17:30:36 2003 From: xuhuigang454 sohu.com (xuhuigang454@sohu.com) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Is there anyone research on transcoding MP3 to AAC ? Message-ID: <3430588.1052901036825.JavaMail.postfix@mx20.mail.sohu.com> Is there anyone research on transcoding MP3 to AAC ? Generally MP3 decoder to get pcm then AAC encoder can work but any other ways there ? pls give some suggestion on the ways. thanks sincerely eric From nlthan yahoo.com Wed May 14 03:02:49 2003 From: nlthan yahoo.com (NAY LIN THAN) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] cbpy decoding Message-ID: <20030514090249.73315.qmail@web21410.mail.yahoo.com> Hi, How can i know the no of transparent blocks in decoding cbpy? I couldn't find how to in the 14496-2. It'd be really great if i can get help because i'm having trouble continuing from that point onwards in demultiplexing the video input stream. I saw a similar question in technotes archive but nobody answered that. regards and thanx nay lin --------------------------------- Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030514/bdf499a1/attachment.html From menno punkass.com Wed May 14 18:29:42 2003 From: menno punkass.com (Menno) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] Is there anyone research on transcoding MP3 to AAC ? In-Reply-To: <3430588.1052901036825.JavaMail.postfix@mx20.mail.sohu.com> Message-ID: <004201c31a2d$ad241760$aca35982@chnappo> Hi, > Is there anyone research on transcoding MP3 to AAC ? Generally MP3 > decoder to get pcm then AAC encoder can work but any other ways there > ? pls give some suggestion on the ways. thanks Didn't do much research myself, but AAC and MP3 use different frame sizes. You may be able to use the scalefactor data from the MP3 in the AAC encoding to get somewhat better quality than just transcoding. I think there has been some research recently on inverse encoding (as opposed to simply decoding) to find some of the encoding parameters. You may be able to find some AES papers on that. Greetings, Menno Bakker From tma iis.fhg.de Wed May 14 18:32:18 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:29 2003 Subject: [M4IF Technotes] cbpy decoding References: <20030514090249.73315.qmail@web21410.mail.yahoo.com> Message-ID: <3EC26182.3B1C7DCC@iis.fhg.de> NAY LIN THAN schrieb: > > Hi, > > How can i know the no of transparent blocks in decoding cbpy? > I couldn't find how to in the 14496-2. It'd be really great if i can get > help because i'm having trouble continuing from that point onwards in demultiplexing > the video input stream. I saw a similar question in > technotes archive but nobody answered that. If you do not use shape coding, the there are no tranparent blocks. If you use shape coding you can derive from the binary shape if a block is transparent or not. Regards, Herbert. > regards and thanx > nay lin > > ---------------------------------------------------------------------------------------------------------------------------------------------- > Do you Yahoo!? > The New Yahoo! Search - Faster. Easier. Bingo. -- 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 valentini coritel.it Wed May 14 18:36:48 2003 From: valentini coritel.it (Lucia) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] Questions on H26L Message-ID: Dear experts, I have some questions on H26L. Is any kind of Rate-Control mechanism expected to be in the standard and in the Reference software? In the RD-Optimization, there is a complex relation between the langrange multiplier and the quantization factor QP: how this relation has been chosen? I'm not sure this is the right list to ask. If not, please let me know where to address these issues. Thanks in advance. Lucia Valentini From garysull windows.microsoft.com Wed May 14 15:46:59 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] Questions on H26L Message-ID: <91D7F2CEE3425A4A9D11311D09FCE24602574BE5@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> +> -----Original Message----- +> From: Lucia [mailto:valentini@coritel.it] +> Sent: Wednesday, May 14, 2024 8:37 AM +> To: Technotes +> Subject: [M4IF Technotes] Questions on H26L +> +> +> +> Dear experts, I have some questions on H26L. +> +> Is any kind of Rate-Control mechanism expected to be in +> the standard and in the Reference software? No particular rate control method will be required for AVC conformance. The same is true for all other video coding standards. However, as with several prior standards, there will be a rate control method implemented in the reference software and described in an accompanying document. Those aspects have not yet been finalized. +> In the RD-Optimization, there is a complex relation between +> the langrange multiplier and the quantization factor QP: +> how this relation has been chosen? Again this is about an encoding issue that is not required for conformance. The method used in the example encoding method was developed based on a combination of theory and empirical experiments. One good article providing background information on that method was published in IEEE Signal Processing magazine in an article by me and Thomas Wiegand (I think it was in late '99 or late '2000). The basic design for how to tie step size and Lagrange multiplier value together is from Wiegand. +> +> I'm not sure this is the right list to ask. +> If not, please let me know where to address these issues. Seems like a fine place to me. Best Regards, Gary Sullivan +> +> Thanks in advance. +> Lucia Valentini +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> From valentini coritel.it Thu May 15 15:29:29 2003 From: valentini coritel.it (Lucia) Date: Wed Jul 30 14:10:30 2003 Subject: R: [M4IF Technotes] Questions on H26L In-Reply-To: <91D7F2CEE3425A4A9D11311D09FCE24602574BE5@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Message-ID: Hallo Gary, I'd like to thank you for your answer, it's been quite clarifying to me. I guess the overall bit-rate constraint (Rc) is calculated in someway like [(channel_bit_rate/frame_rate)-bits for already encoded MBs in the frame)], is it? Still, the relation between the multiplier and QP is showed to be quadratic in most of the papers i've read explaining the tie itself, but in the H26L codec a formula with an exponential and a squared term is used... is it an adjustment deriving from empirical experiments with different possible ties? Thanks again and Best Regards. Lucia -----Messaggio originale----- Da: Gary Sullivan [mailto:garysull@windows.microsoft.com] Inviato: mercoledi 14 maggio 2003 23.47 A: Lucia; Technotes Oggetto: RE: [M4IF Technotes] Questions on H26L +> -----Original Message----- +> From: Lucia [mailto:valentini@coritel.it] +> Sent: Wednesday, May 14, 2024 8:37 AM +> To: Technotes +> Subject: [M4IF Technotes] Questions on H26L +> +> +> +> Dear experts, I have some questions on H26L. +> +> Is any kind of Rate-Control mechanism expected to be in +> the standard and in the Reference software? No particular rate control method will be required for AVC conformance. The same is true for all other video coding standards. However, as with several prior standards, there will be a rate control method implemented in the reference software and described in an accompanying document. Those aspects have not yet been finalized. +> In the RD-Optimization, there is a complex relation between +> the langrange multiplier and the quantization factor QP: +> how this relation has been chosen? Again this is about an encoding issue that is not required for conformance. The method used in the example encoding method was developed based on a combination of theory and empirical experiments. One good article providing background information on that method was published in IEEE Signal Processing magazine in an article by me and Thomas Wiegand (I think it was in late '99 or late '2000). The basic design for how to tie step size and Lagrange multiplier value together is from Wiegand. +> +> I'm not sure this is the right list to ask. +> If not, please let me know where to address these issues. Seems like a fine place to me. Best Regards, Gary Sullivan +> +> Thanks in advance. +> Lucia Valentini +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> From chl math.uni-bonn.de Thu May 15 16:15:04 2003 From: chl math.uni-bonn.de (Christoph Lampert) Date: Wed Jul 30 14:10:30 2003 Subject: R: [M4IF Technotes] Questions on H26L In-Reply-To: Message-ID: On Thu, 15 May 2003, Lucia wrote: > Hallo Gary, > > I'd like to thank you for your answer, it's been quite clarifying to me. > I guess the overall bit-rate constraint (Rc) is calculated in someway like > [(channel_bit_rate/frame_rate)-bits for already encoded MBs in the frame)], > is it? > > Still, the relation between the multiplier and QP is showed to be quadratic > in most of the papers i've read explaining the tie itself, but in the H26L > codec a formula > with an exponential and a squared term is used... is it an adjustment > deriving from empirical > experiments with different possible ties? It's the same "value" for lambda (quadratic in quantization step size), but in H.26L this step size doesn't depend linear on QP anymore, but exponentally in this way. Christoph -- Dr. Christoph H. Lampert chl@math,uni-bonn,de | Diese Signature ist maschi- Beringstr. 6, Zi. 15, 53115 Bonn, Germany | nell erstellt und auch ohne Tel. (0228) 73-4708 Fax. +49 228 73-7916 | Unterschrift wirksam. http://www.math.uni-bonn.de/people/chl/ | AZ 27B/6 From bach noida.interrasystems.com Thu May 15 17:12:47 2003 From: bach noida.interrasystems.com (Biswajit Acharya) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] Unrestricted MV in Simple profile? Message-ID: <3EC36F27.5FD3004E@noida.interrasystems.com> Hi All, Can you please explain how unrestricted MV can occur in a Simple profile (rectangular video) encoded bitstream. I really can not understand how encoder would generate a motion vector pointing to a block in reference VOP lying outside the VOP boundaries. This may arise in case of non-ractangular shapes or for VOPs of different sizes. However, though the specs. give it (Unrestricted MV) as a tool for Simple profile, this point is not clearly mentioned in the specs. Hope you can explain this point. Thank you, Bach From jstrawn s-systems-inc.com Thu May 15 11:57:37 2003 From: jstrawn s-systems-inc.com (John Strawn) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] Where to find the AAC =?GB2312?B?Y29kZWOjvw==?= References: <001601c318ea$85ad5910$14496fa6@freebreeze> Message-ID: <3EC3D511.9040705@s-systems-inc.com> > I am trying to find an aac codec Try these: http://www.audiocoding.com/faac.php > http://sourceforge.net/project/showfiles.php?group_id=16082 or > http://easynews.dl.sourceforge.net/sourceforge/ffmpeg/ffmpeg-0.4.6.tar.gz > http://www.mpeg4ip.net/ or > http://sourceforge.net/projects/mpeg4ip/ > http://www.xvid.org/ -- John Strawn, S Systems Inc., 15 Willow Larkspur CA 94939 USA tel +1 (415) 927 8856 http://www.s-systems-inc.com email jstrawn@s-systems-inc.com From tma iis.fhg.de Fri May 16 11:49:49 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] Unrestricted MV in Simple profile? References: <3EC36F27.5FD3004E@noida.interrasystems.com> Message-ID: <3EC4A62D.C9941612@iis.fhg.de> Biswajit Acharya schrieb: > > Hi All, > > Can you please explain how unrestricted MV can occur in a > Simple profile (rectangular video) encoded bitstream. > > I really can not understand how encoder would generate a > motion vector pointing to a block in reference VOP lying > outside the VOP boundaries. This may arise in case of > non-ractangular shapes or for VOPs of different sizes. > > However, though the specs. give it (Unrestricted MV) as a > tool for Simple profile, this point is not clearly > mentioned in the specs. The motion vectors are unrestricted in the same way they were already in H.263 (with annex D). If a vector points outside the VOP the border pixels of the reference VOP are repeated. Herbert. > Hope you can explain this point. > > Thank you, > > Bach > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes -- 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 jean-claude.dufourd enst.fr Mon May 19 23:09:19 2003 From: jean-claude.dufourd enst.fr (Jean-Claude Dufourd) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] PROTO Insertion References: <003401c3188f$040b8680$9002a8c0@baphomet> <3EC0AB63.3020907@elhorst.com> Message-ID: <3EC939EF.3090600@enst.fr> Mathijn Elhorst wrote: > According to the current specs, PROTO definitions are decoded during a > SceneReplace command only. Hence, extending the list of PROTOs at a > later stage is not possible without throwing everything away first. > However, in amendment 4 of the systems specs it is made possible to > insert and delete PROTO definitions. To my knowledge this part of the > spec is still in draft. > > Sebastian Voigt wrote: > >> I like to update an existing scenedescription with an new PROTO-Node. >> Can I insert this PROTO-Node with BIFS-Insertion-Command, Insert Node? > As far as I know, this part is at the FDIS stage (very close to publishing) and the above mechanism is implemented in Osmo4. Best regards JC From AAgostinelli chipwrights.com Mon May 19 17:31:28 2003 From: AAgostinelli chipwrights.com (Agostinelli, Alan) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] ISO MPEG-4 under ASF? Message-ID: <93A4BBB9515ED411AE9D00508BD955A572A5FC@intranet> Hi! I am attempting to write a library that encapsulates ISO standard MPEG-4 video elementary streams as Microsoft ASF files. Microsoft says that they support this, and have a registered FOURCC code (M4S2) for ISO standard MPEG-4, but nothing I generate will play (although it does not generate errors). After a week-long search, I have failed to find *any* examples of this sort of file, nor have I found any tool that will let me generate such a file (plenty of the Microsoft specific MPEG-4 flavors - MP42, MP43, MP4S, MPG4, but these don't cut it). Can anyone point me at an ASF file containing playable ISO MPEG-4? Or a tool that will allow me to generate the same? I have already tried: * Microsoft Media Encoder * Microsoft Movie Maker * Adobe Premier * Virtual Dub * Flicker Free * Video Framer * Stoik * Ulead * MPEG-4 Maker * Easy AVI converter * AVS Video Converter * ffmpeg Thanks! Alan Agostinelli ChipWrights From deepak_kotur yahoo.com Mon May 19 22:23:14 2003 From: deepak_kotur yahoo.com (deepak kotur) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] mpeg4 file parser Message-ID: <20030520042314.4176.qmail@web40803.mail.yahoo.com> hi, I have mpeg4 raw bitstreams,i want to convert them in to mpeg4 frame format are there any tools/utilites to do this. or if any one has such tools it will be of great help to me. Regards deepak __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From Jean-Claude.Dufourd enst.fr Tue May 20 10:40:53 2003 From: Jean-Claude.Dufourd enst.fr (Jean-Claude Dufourd) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] mpeg4 file parser References: <20030520042314.4176.qmail@web40803.mail.yahoo.com> Message-ID: <3EC9DC05.6010702@enst.fr> deepak kotur wrote: > I have mpeg4 raw bitstreams,i want to convert them in > to mpeg4 frame format "mpeg4 frame format" means nothing to me, but "MP4 file format" means something. Are you talking about the second ? > are there any tools/utilites to do this. In the mpeg4ipproject at sourceforge, there is a tool called mp4creator which takes raw MPEG-4 video/audio streams and packages them in MP4 file format. Best regards JC -- Jean-Claude Dufourd @======================================@ ENST, Dept COMELEC The wing, over the big rock... 46, rue Barrault @======================================@ 75013 Paris Tel: +33145817807 Fax: +33145804036 From PG02621846 ntu.edu.sg Tue May 20 17:10:31 2003 From: PG02621846 ntu.edu.sg (#WEI JUN#) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] mpeg4 file parser Message-ID: <0C42D409AF10B1428A0B026FB160A5BE1BD791@mail02.student.main.ntu.edu.sg> -----Original Message----- From: deepak kotur [mailto:deepak_kotur@yahoo.com] Sent: Tuesday, May 20, 2024 12:23 PM To: technotes@lists.m4if.org Subject: [M4IF Technotes] mpeg4 file parser hi, I have mpeg4 raw bitstreams,i want to convert them in to mpeg4 frame format are there any tools/utilites to do this. ~~~~~~~~~~~~~~~~~~~~~~~~~ Find the VOP start code, then it is easy to split raw bitstreams into frame. Moreover, finding the specified marker, you can also split a frame into different parts, such as header, motion parts, texture parts etc. It is easy but trivial. ~~~~~~~~~~~~~~~~~~~~~~~~~` or if any one has such tools it will be of great help to me. ~~~~~~~~~~~~~~~~~~~~~~~~~ if you want the above software, I do have a source code. ~~~~~~~~~~~~~~~~~~~~~~~~` Regards deepak __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From julien.budynek resonate-mp4.com Tue May 20 12:52:19 2003 From: julien.budynek resonate-mp4.com (Julien Budynek) Date: Wed Jul 30 14:10:30 2003 Subject: [M4IF Technotes] ISO MPEG-4 under ASF? References: <93A4BBB9515ED411AE9D00508BD955A572A5FC@intranet> Message-ID: <006301c31eb5$88bbd1b0$0a00a8c0@nausicaa> Hello this is a little off topic but I'll try to explain what I would do. Seeing all the software browsing you did, I think no existing tool will help you to create such a file. You should develop it yourself. You will need to dig into DirectShow and possibly Windows Media SDK. Here are pointers: http://msdn.microsoft.com/library/default.asp?url=/nhp/default.asp?contentid =28000411 I think it is not straightforward, the sensitive point being the storing of an already compressed stream into the asf file format, of course... there seem to be a "data profile" to tweak in order to do that. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/ directx/htm/creatingasffilesindirectshow.asp Maybe you could try and ask on the DirectX mailing list, people there are good at using MS technologies. The list is called directxav, here are the archives: http://discuss.microsoft.com/archives/directxav.html cheers Julien ____________ Julien Budynek Resonate mp4 Tel: +33 1 42 41 16 65 julien.budynek@resonate-mp4.com ----- Original Message ----- From: "Agostinelli, Alan" To: Sent: Monday, May 19, 2024 10:31 PM Subject: [mpeg] [M4IF Technotes] ISO MPEG-4 under ASF? > Hi! > > I am attempting to write a library that encapsulates ISO standard MPEG-4 > video elementary streams as Microsoft ASF files. > Microsoft says that they support this, and have a registered FOURCC code > (M4S2) for ISO standard MPEG-4, but nothing > I generate will play (although it does not generate errors). > > After a week-long search, I have failed to find *any* examples of this sort > of file, nor have I found any tool that will let me generate > such a file (plenty of the Microsoft specific MPEG-4 flavors - MP42, MP43, > MP4S, MPG4, but these don't cut it). > > Can anyone point me at an ASF file containing playable ISO MPEG-4? Or a tool > that will allow me to generate the same? > I have already tried: > * Microsoft Media Encoder > * Microsoft Movie Maker > * Adobe Premier > * Virtual Dub > * Flicker Free > * Video Framer > * Stoik > * Ulead > * MPEG-4 Maker > * Easy AVI converter > * AVS Video Converter > * ffmpeg > > Thanks! > Alan Agostinelli > ChipWrights > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes From mykim us.ibm.com Tue May 20 11:35:41 2003 From: mykim us.ibm.com (Michelle Y Kim) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] mpeg4 file parser In-Reply-To: <0C42D409AF10B1428A0B026FB160A5BE1BD791@mail02.student.main.ntu.edu.sg> Message-ID: deepak, > I have mpeg4 raw bitstreams,i want to convert them in > to mpeg4 frame format ... are there any tools/utilites to do this. You can use AVgen included in the IBM Toolkit for MPEG-4 from IBM alphaWorks: http://www.alphaworks.ibm.com/tech/tk4mpeg4. AVgen can format mp3, aac and MPEG-4 video streams into the mp4 file format. 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) "#WEI JUN#" Sent by: technotes-admin@lists.m4if.org 05/20/2003 04:10 AM To: "deepak kotur" cc: Subject: RE: [M4IF Technotes] mpeg4 file parser -----Original Message----- From: deepak kotur [mailto:deepak_kotur@yahoo.com] Sent: Tuesday, May 20, 2024 12:23 PM To: technotes@lists.m4if.org Subject: [M4IF Technotes] mpeg4 file parser hi, I have mpeg4 raw bitstreams,i want to convert them in to mpeg4 frame format are there any tools/utilites to do this. ~~~~~~~~~~~~~~~~~~~~~~~~~ Find the VOP start code, then it is easy to split raw bitstreams into frame. Moreover, finding the specified marker, you can also split a frame into different parts, such as header, motion parts, texture parts etc. It is easy but trivial. ~~~~~~~~~~~~~~~~~~~~~~~~~` or if any one has such tools it will be of great help to me. ~~~~~~~~~~~~~~~~~~~~~~~~~ if you want the above software, I do have a source code. ~~~~~~~~~~~~~~~~~~~~~~~~` Regards deepak __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030520/dfd9799d/attachment.html From y.syed CableLabs.com Tue May 20 10:21:59 2003 From: y.syed CableLabs.com (Yasser Syed) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] Software program Message-ID: Dear all, I am looking for a software program that can take a combined yuv file (4:2:2 - 10 bit)containing all frames and chop this into separate .yuv files for each frame. Would appreciate it if someone would let me know if they know of some software that does this. Regards, Yasser From Gerardo.Rosiles motorola.com Tue May 20 10:06:57 2003 From: Gerardo.Rosiles motorola.com (Rosiles Gerardo-ra9355) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] Software program Message-ID: <6728517EECE7D511981B00D0B78290310355EEF4@az33exm27.corp.mot.com> Search the archives, recently there has been a lot of discussion on how to build this type of tool. I am guessing you might have a more difficult time finding one as you need 10-bit support. Regards, Gerardo -----Original Message----- From: Yasser Syed [mailto:y.syed@CableLabs.com] Sent: Tuesday, May 20, 2024 10:22 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] Software program Dear all, I am looking for a software program that can take a combined yuv file (4:2:2 - 10 bit)containing all frames and chop this into separate .yuv files for each frame. Would appreciate it if someone would let me know if they know of some software that does this. Regards, Yasser _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From rob.koenen m4if.org Tue May 20 11:11:38 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] Software program In-Reply-To: <6728517EECE7D511981B00D0B78290310355EEF4@az33exm27.corp.mot.com> Message-ID: > Search the archives, ... http://lists.m4if.org/pipermail/technotes/ From loo_yee sina.com Wed May 21 16:19:00 2003 From: loo_yee sina.com (loo yee) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] Test sequence Message-ID: <005501c31f69$42fe3910$0f00a8c0@N15> Hi, Could you tell me, where can I get the video test sequence of MPEG4? My job is about video object coding, so I must obtain the video sequence and the binary shape map of its video object. I have looked for them at the web sit of mpegif, but I can not find binary shape map. Do you know where I can get them , or which software can create the binary shape of video object? It is best for free:-) Thank you for your attention, Yi Lu -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030521/47ca56e9/attachment.html From ramki emuzed.com Wed May 21 20:15:35 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] ISO MPEG-4 under ASF? References: <93A4BBB9515ED411AE9D00508BD955A572A5FC@intranet> Message-ID: <197a01c31f9f$4738ed00$1b0aa8c0@blr.emuzed.com> Hi, SV-30/20 camcorder from Panasonic stores the video in MPEG-4 using ASF file http://catalog2.panasonic.com/webapp/wcs/stores/servlet/ModelList?storeId=11 251&catalogId=11005&catGroupId=11247 This is costly solution as the comcorder would cost 300$ regards, ramkishor Architect - Video Codecs Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: "Agostinelli, Alan" To: Sent: Tuesday, May 20, 2024 2:01 AM Subject: [M4IF Technotes] ISO MPEG-4 under ASF? > Hi! > > I am attempting to write a library that encapsulates ISO standard MPEG-4 > video elementary streams as Microsoft ASF files. > Microsoft says that they support this, and have a registered FOURCC code > (M4S2) for ISO standard MPEG-4, but nothing > I generate will play (although it does not generate errors). > > After a week-long search, I have failed to find *any* examples of this sort > of file, nor have I found any tool that will let me generate > such a file (plenty of the Microsoft specific MPEG-4 flavors - MP42, MP43, > MP4S, MPG4, but these don't cut it). > > Can anyone point me at an ASF file containing playable ISO MPEG-4? Or a tool > that will allow me to generate the same? > I have already tried: > * Microsoft Media Encoder > * Microsoft Movie Maker > * Adobe Premier > * Virtual Dub > * Flicker Free > * Video Framer > * Stoik > * Ulead > * MPEG-4 Maker > * Easy AVI converter > * AVS Video Converter > * ffmpeg > > Thanks! > Alan Agostinelli > ChipWrights > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From Ariel.David ParthusCeva.com Wed May 21 17:41:53 2003 From: Ariel.David ParthusCeva.com (Ariel David) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor Message-ID: <988BE481ACC95C429DCB909F74A3163A79612F@exchange-il> Hi, I am trying to decode mpeg-4 video files with short header (h.263 format). I've looked though the mpeg-4 standard and found not mention of a different method for motion vector predictor. The mpeg-4 method is the median of the 3 adjacent macroblocks. This does not seem to work in h.263 (mpeg-4 with short headers). I assume it's more like mpeg-2, either left or top macroblock, but I can't find any mention in the standard. Can someone help me out? Thanks, Ariel From tma iis.fhg.de Wed May 21 17:39:06 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor References: <988BE481ACC95C429DCB909F74A3163A79612F@exchange-il> Message-ID: <3ECB8F8A.CCF3713E@iis.fhg.de> Ariel David schrieb: > > Hi, > > I am trying to decode mpeg-4 video files with short header (h.263 format). > I've looked though the mpeg-4 standard and found not mention of a different method for motion vector predictor. > The mpeg-4 method is the median of the 3 adjacent macroblocks. > This does not seem to work in h.263 (mpeg-4 with short headers). Why not? It's exactly the same in H.263. Herbert. > I assume it's more like mpeg-2, either left or top macroblock, but I can't find any mention in the standard. > > Can someone help me out? > > Thanks, > > Ariel > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes -- 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 Ariel.David ParthusCeva.com Wed May 21 19:24:37 2003 From: Ariel.David ParthusCeva.com (Ariel David) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor Message-ID: <988BE481ACC95C429DCB909F74A3163A796134@exchange-il> Maybe the problem is in my median prediction. are predictors that are skipped macroblock computed differently or are they considered 0,0 motion vector. For example: if the top left MV is 0,0, the top MV is 1,1 and the left is skipped will the predictor be 0,0 (regular median) or 1,1 (since the left is not considered). Ariel -----Original Message----- From: Herbert Thoma [mailto:tma@iis.fhg.de] Sent: Wednesday, May 21, 2024 5:39 PM To: Ariel David Cc: technotes@lists.m4if.org Subject: Re: [M4IF Technotes] h.263 motion vector predictor Ariel David schrieb: > > Hi, > > I am trying to decode mpeg-4 video files with short header (h.263 format). > I've looked though the mpeg-4 standard and found not mention of a different method for motion vector predictor. > The mpeg-4 method is the median of the 3 adjacent macroblocks. > This does not seem to work in h.263 (mpeg-4 with short headers). Why not? It's exactly the same in H.263. Herbert. > I assume it's more like mpeg-2, either left or top macroblock, but I can't find any mention in the standard. > > Can someone help me out? > > Thanks, > > Ariel > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes -- 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 chl math.uni-bonn.de Wed May 21 19:01:32 2003 From: chl math.uni-bonn.de (Christoph Lampert) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor In-Reply-To: <988BE481ACC95C429DCB909F74A3163A796134@exchange-il> Message-ID: On Wed, 21 May 2003, Ariel David wrote: > > are predictors that are skipped macroblock computed differently or are > they considered 0,0 motion vector. For example: if the top left MV is > 0,0, the top MV is 1,1 and the left is skipped will the predictor be > 0,0 (regular median) or 1,1 (since the left is not considered). "skip" is (0,0). The only cases where MVs are "not considered" is in the top row, then predictor is simply the left neighbour's MV. Otherwise, it's always median where missing vectors (intra-blocks, skip-blocks, leftmost column) are treated as (0,0). Btw. it's median of LEFT, TOP and TOP-RIGHT, _not_ TOP-LEFT! Christoph From tma iis.fhg.de Wed May 21 19:12:07 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor References: <988BE481ACC95C429DCB909F74A3163A796134@exchange-il> Message-ID: <3ECBA557.549A1C85@iis.fhg.de> Ariel David schrieb: > > Maybe the problem is in my median prediction. > > are predictors that are skipped macroblock computed differently or are they considered 0,0 motion vector. Skipped macroblocks (not_coded = 1) are considered as INTER macroblocks with 0,0 motion vector and no coefficient data. > For example: > if the top left MV is 0,0, the top MV is 1,1 and the left is skipped will the predictor > be 0,0 (regular median) or 1,1 (since the left is not considered). The predictor is 0,0 in this case. But it is the top _right_ MV, top MV and left MV: +---+---+ | 2 | 3 | +---+---+---+ | 1 | x | +---+---+ x is the current macroblock, the median of 1, 2, and 3 is the predictor. Herbert. > Ariel > > -----Original Message----- > From: Herbert Thoma [mailto:tma@iis.fhg.de] > Sent: Wednesday, May 21, 2024 5:39 PM > To: Ariel David > Cc: technotes@lists.m4if.org > Subject: Re: [M4IF Technotes] h.263 motion vector predictor > > Ariel David schrieb: > > > > Hi, > > > > I am trying to decode mpeg-4 video files with short header (h.263 format). > > I've looked though the mpeg-4 standard and found not mention of a different method for motion vector predictor. > > The mpeg-4 method is the median of the 3 adjacent macroblocks. > > This does not seem to work in h.263 (mpeg-4 with short headers). > > Why not? It's exactly the same in H.263. > > Herbert. > > > I assume it's more like mpeg-2, either left or top macroblock, but I can't find any mention in the standard. > > > > Can someone help me out? > > > > Thanks, > > > > Ariel > > > > _______________________________________________ > > Technotes mailing list > > Technotes@lists.m4if.org > > http://lists.m4if.org/mailman/listinfo/technotes > > -- > 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/ > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes -- 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 garysull windows.microsoft.com Wed May 21 10:22:37 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] h.263 motion vector predictor Message-ID: <91D7F2CEE3425A4A9D11311D09FCE246022DE13B@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Skipped MBs in P pictures use (0,0) MVs. Doesn't matter whether short header or not. -Gary S. +> -----Original Message----- +> From: technotes-admin@lists.m4if.org +> [mailto:technotes-admin@lists.m4if.org] On Behalf Of Ariel David +> Sent: Wednesday, May 21, 2024 8:25 AM +> To: technotes@lists.m4if.org +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor +> +> +> Maybe the problem is in my median prediction. +> +> are predictors that are skipped macroblock computed +> differently or are they considered 0,0 motion vector. +> For example: +> if the top left MV is 0,0, the top MV is 1,1 and the left is +> skipped will the predictor be 0,0 (regular median) or 1,1 +> (since the left is not considered). +> +> Ariel +> +> -----Original Message----- +> From: Herbert Thoma [mailto:tma@iis.fhg.de] +> Sent: Wednesday, May 21, 2024 5:39 PM +> To: Ariel David +> Cc: technotes@lists.m4if.org +> Subject: Re: [M4IF Technotes] h.263 motion vector predictor +> +> +> Ariel David schrieb: +> > +> > Hi, +> > +> > I am trying to decode mpeg-4 video files with short header +> (h.263 format). +> > I've looked though the mpeg-4 standard and found not +> mention of a different method for motion vector predictor. +> > The mpeg-4 method is the median of the 3 adjacent macroblocks. +> > This does not seem to work in h.263 (mpeg-4 with short headers). +> +> Why not? It's exactly the same in H.263. +> +> Herbert. +> +> > I assume it's more like mpeg-2, either left or top +> macroblock, but I can't find any mention in the standard. +> > +> > Can someone help me out? +> > +> > Thanks, +> > +> > Ariel +> > +> > _______________________________________________ +> > Technotes mailing list +> > Technotes@lists.m4if.org +> > http://lists.m4if.org/mailman/listinfo/technotes +> +> -- +> 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/ +> +> +> _______________________________________________ +> Technotes mailing list +> Technotes@lists.m4if.org +> http://lists.m4if.org/mailman/listinfo/technotes +> From logic_cad yahoo.com Thu May 22 00:13:35 2003 From: logic_cad yahoo.com (George Wong) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] vob to mp4 converter Message-ID: <20030522061335.51946.qmail@web21510.mail.yahoo.com> Hi everybody, There is an open-source tool called OpenShiiva, which is a vob to mp4 converter, but is available only for the Mac. Is there a similar tool available for Windows? Thanks, George __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From bam iis.fraunhofer.de Thu May 22 18:36:58 2003 From: bam iis.fraunhofer.de (Oliver Baum) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] [BIFS] create MF...-fields? Message-ID: <3ECCEE9A.7050507@iis.fraunhofer.de> Hi, all! Is there a possibility to create an MF...-field from more than one SF...-fields or a SFVec3f field within a BIFS scene without using a Script node? To give an example: How can a conversion a) from four SFint to an MFint with four elements or b) from an SFVec3f to an MFfloat with three elements be reached? I think that this it _not_ possible using just Valuator nodes, as only the first field of an MF-field at its output is filled, if the input field is an SF. Best regards, Oliver -- Dipl.-Ing. Oliver Baum Abt./Dep. Audio & Multimedia (AMM) Fraunhofer IIS (Fraunhofer-Institut f?r integrierte Schaltungen IIS) [Fraunhofer Institute for Integrated Circuits IIS] Am Wolfsmantel 33, D-91058 Erlangen, Germany phone : +49 (0) 91 31 / 7 76 - 31 9 <<=== NEW !!! fax : +49 (0) 91 31 / 7 76 - 39 8 mail : bam@iis.fraunhofer.de <<=== NEW !!! www : http://www.iis.fraunhofer.de/amm/ From holger.grahn bitmanagement.de Fri May 23 02:46:42 2003 From: holger.grahn bitmanagement.de (Holger Grahn - Bitmanagement) Date: Wed Jul 30 14:10:31 2003 Subject: [M4IF Technotes] Re: [BIFS] create MF...-fields? References: <3ECCEE9A.7050507@iis.fraunhofer.de> Message-ID: <00c101c320bc$662d9670$0502a8c0@Maximum> Hi Oliver, have you checked out Conditional / BIFS Update commands ? Greetings Holger From tm991058 fh-stpoelten.ac.at Fri May 23 17:15:10 2003 From: tm991058 fh-stpoelten.ac.at (tm991058) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player Message-ID: <00a701c32135$b8421e30$0200a8c0@laptop> Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030523/31ef09f1/attachment.html From andrewk vbrick.com Fri May 23 11:55:30 2003 From: andrewk vbrick.com (Andrew Krupiczka) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player Message-ID: Karin, you may start with http://www.vbrick.com/StreamPlayer.asp Regards, Andrew, VBrick Systems -----Original Message----- From: tm991058 [mailto:tm991058@fh-stpoelten.ac.at] Sent: Friday, May 23, 2024 10:15 AM To: technotes@lists.m4if.org Subject: [M4IF Technotes] MPEG-4 Player Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030523/378f9b18/attachment.html From mykim us.ibm.com Fri May 23 12:42:35 2003 From: mykim us.ibm.com (Michelle Y Kim) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player In-Reply-To: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: Karin, You can add to your list 2 Java-based MPEG-4 players: A cross-platform, stand-alone MPEG-4 player downloadable from http://www.alphaworks.ibm.com/tech/tk4mpeg4. The MPEG-4 Java applet player as demonstrated on http://www.research.ibm.com/mpeg-4. Good luck with your thesis work! Regards, Michelle Dr. Michelle Y. Kim, IBM T. J. Watson Research Center Manager, Composite Media Technologies Group mykim@us.ibm.com (e-mail) (914) 784-7709 (voice) (914) 784-7455 (fax) "tm991058" Sent by: technotes-admin@lists.m4if.org 05/23/2003 10:15 AM To: cc: Subject: [M4IF Technotes] MPEG-4 Player Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030523/0d466180/attachment.html From oamato wanadoo.fr Fri May 23 19:53:50 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player References: Message-ID: <00ca01c3214b$ea4dfff0$0a00000a@beck> Karin, 1?/ mpegable Player http://www.mpegable.com/showPage.php?SITE=mpegable&PAGE=mpegableplayer 2?/ Envivio TV http://www.envivio.com 3?/ ENST Osmo4 http://www.comelec.enst.fr/osmose/ 4?/ Philips Platform4 PC player http://www.digitalnetworks.philips.com/InformationCenter/Global/FArticleSumm ary.asp?lNodeId=764&channel=764&channelId=N764A2175 5?/ Osoon Play http://www.osoonmedia.com/english/index.php 6?/ MPEG4IP Player http://www.mpeg4ip.net/ http://peque.metropoliglobal.com/dext/index.html 7?/ Digimax MAXPEG Player http://www.digimax.com.tw/MPEG4/product_player.htm 8?/ DivX Player http://www.divx.com/software/ > p.s.: If someone is interessted in the complete overview.. I can send it > to you, when it is finished!!! Yes, I'm interested :-) Olivier From squear gmx.de Fri May 23 20:55:15 2003 From: squear gmx.de (Sebastian Voigt) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player References: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: <005e01c32154$79af31c0$9002a8c0@baphomet> Hi For content with 3-D-BIFS and 2-D-BIFS http://www.octaga.com it's one of my favourite players http://song-opi.de http://www.digimax.com.tw/MPEG4 http://www.digimax.com ... and don't forget the IM-1 Player3D, it's available as source Best regards Sebastian ----- Original Message ----- From: tm991058 To: technotes@lists.m4if.org Sent: Friday, May 23, 2024 4:15 PM Subject: [M4IF Technotes] MPEG-4 Player Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030523/8c8e98eb/attachment.html From eric f2f-inc.com Fri May 23 16:15:30 2003 From: eric f2f-inc.com (Eric Petajan) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player References: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: <3ECE7351.F7E34697@f2f-inc.com> Karin, Go to www.f2fanimation.com to see our MPEG-4 FBA player as a quicktime plugin. -eric > tm991058 wrote: > > Hi! > > During my diploma thesis, which is about MPEG-4 I write about MPEG-4 > player. > > I would like to give an overview over all MPEG-4 players and their > abilities, available on the market by now. > The chapter in my diploma thesis should provide the details about all > players available: > - the name of the player, > - the company which has developed the player + internetsite > - and the internetsite which contains the list of the abilities of the > player (or if there is no internetsite I write down the main > abilities) > > Maybe you can help me collecting players... or maybe you have a player > in development which should not miss in my overview! > > I would be happy about every answer I get, which helps me to complete > my overview! > > Thanks, > Karin > > p.s.: If someone is interessted in the complete overview.. I can send > it to you, when it is finished!!! > -- Dr. Eric Petajan Chief Scientist and Founder face2face animation, inc. 2 Kent Place Blvd, Summit, NJ 07901 cell. 908-399-5750 off. 908-598-7460 x5803 fax 908-598-1965 www.f2fanimation.com From yuval envivio.com Fri May 23 13:30:35 2003 From: yuval envivio.com (Yuval Fisher) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] Re: [BIFS] create MF...-fields? References: <3ECCEE9A.7050507@iis.fraunhofer.de> Message-ID: <3ECE76DB.4DFCC11F@envivio.com> > Is there a possibility to create an MF...-field from more than one > SF...-fields or a SFVec3f field within a BIFS scene without using a > Script node? > To give an example: How can a conversion > a) from four SFint to an MFint with four elements or > b) from an SFVec3f to an MFfloat with three elements > be reached? > > I think that this it _not_ possible using just Valuator nodes, as only > the first field of an MF-field at its output is filled, if the input > field is an SF. If the Valuator node doesn't suit your needs, you have to use a Script. Best, Yuval -- Yuval Fisher Envivio. yuval@envivio.com +1 (626) 229 9622 From rob.koenen m4if.org Fri May 23 14:03:36 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:32 2003 Subject: [M4IF Technotes] MPEG-4 Player In-Reply-To: <3ECE7351.F7E34697@f2f-inc.com> Message-ID: Karin, > > p.s.: If someone is interessted in the complete overview.. I can send > > it to you, when it is finished!!! yes, I am very interested in your overview. We can make the paper or its data available from M4IF's website when it is done. It could add good data to our upcoming Products database. Best, Rob > > Hi! > > > > During my diploma thesis, which is about MPEG-4 I write about MPEG-4 > > player. > > > > I would like to give an overview over all MPEG-4 players and their > > abilities, available on the market by now. > > The chapter in my diploma thesis should provide the details > about all > > players available: > > - the name of the player, > > - the company which has developed the player + internetsite > > - and the internetsite which contains the list of the > abilities of the > > player (or if there is no internetsite I write down the main > > abilities) > > > > Maybe you can help me collecting players... or maybe you > have a player > > in development which should not miss in my overview! > > > > I would be happy about every answer I get, which helps me > to complete > > my overview! > > > > Thanks, > > Karin > > > > > > -- > Dr. Eric Petajan > Chief Scientist and Founder > face2face animation, inc. > 2 Kent Place Blvd, Summit, NJ 07901 > cell. 908-399-5750 off. 908-598-7460 x5803 fax 908-598-1965 > www.f2fanimation.com > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes > From sm dicas.de Fri May 23 23:00:54 2003 From: sm dicas.de (Moeritz, Sebastian) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] MPEG-4 Player In-Reply-To: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: <002e01c3216e$670229a0$480a8451@London> Hi Karin -- Olivier Amato has already mentioned our mpegable Player, which is a stand-alone PC based application that plays MPEG-4 movie files or network distributed streams. In addition to that, we also have mpegable DS decoder, which decodes MPEG-4 audio/video in software applications dupporting DirectShow. With this software you can watch your MPEG-4 files in Microsoft's Windows Media Player (6.x upwards). Both apps are available for download on our website -- www.mpegable.com If you need further information or assistance, please do not hesitate to contact me. Please send me your diploma thesis -- I would also be very interested. Kind regards. Seb -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of tm991058 Sent: Friday, May 23, 2024 3:15 PM To: technotes@lists.m4if.org Subject: [M4IF Technotes] MPEG-4 Player Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030523/4a307d9a/attachment.html From MVidal SonicFoundry.com Fri May 23 20:55:57 2003 From: MVidal SonicFoundry.com (Mike Vidal) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] MPEG-4 Player Message-ID: <93482DE01BC3614A8B9D48C7111F3803E16975@kenny.sonicfoundry.com> I'm interested also. -----Original Message----- From: Olivier Amato [mailto:oamato@wanadoo.fr] Sent: Friday, May 23, 2024 12:54 PM To: technotes@lists.m4if.org Cc: tm991058 Subject: Re: [M4IF Technotes] MPEG-4 Player Karin, 1?/ mpegable Player http://www.mpegable.com/showPage.php?SITE=mpegable&PAGE=mpegableplayer 2?/ Envivio TV http://www.envivio.com 3?/ ENST Osmo4 http://www.comelec.enst.fr/osmose/ 4?/ Philips Platform4 PC player http://www.digitalnetworks.philips.com/InformationCenter/Global/FArticleSumm ary.asp?lNodeId=764&channel=764&channelId=N764A2175 5?/ Osoon Play http://www.osoonmedia.com/english/index.php 6?/ MPEG4IP Player http://www.mpeg4ip.net/ http://peque.metropoliglobal.com/dext/index.html 7?/ Digimax MAXPEG Player http://www.digimax.com.tw/MPEG4/product_player.htm 8?/ DivX Player http://www.divx.com/software/ > p.s.: If someone is interessted in the complete overview.. I can send it > to you, when it is finished!!! Yes, I'm interested :-) Olivier _______________________________________________ Technotes mailing list Technotes@lists.m4if.org http://lists.m4if.org/mailman/listinfo/technotes From bph_uvce yahoo.com Sat May 24 08:29:32 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] Re: MPEG4-Help In-Reply-To: <020c01c31ee0$30f62090$b514010a@telxsi.com> Message-ID: <20030524142932.48254.qmail@web40309.mail.yahoo.com> Hi all, I am trying to extract out an video object(say,foreground object) from MPEG4 bitstream. After going thr' 14496-1 systems document I have follg. queries. 1.Are Descriptor tags preceded by 23 0's & a 1 like start codes of Part2(visual)? 2.No mention of system start codes(0xc6 to 0xFF as given in Visual part) in Systems document. 3. Object profile indication of decoder config descriptor gives us the profile encoded,say simple,core, main etc. But how do I know the no. of objects encoded & their OD-ID's? 4.How many times a OD appear in mpeg4 bitstream? 5.Knowing ES-ID's associated with a OD of a media object, How do I acess ES's & where is the end point for a ES? Because I understand that a ES corresponds to a object. By segregating the ES I should be able to extract out object. Am I right? Thanks in advance, Regards, b.p.harish __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From Ariel.David ParthusCeva.com Sun May 25 12:00:53 2003 From: Ariel.David ParthusCeva.com (Ariel David) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] h.263 motion vector predictor Message-ID: <988BE481ACC95C429DCB909F74A3163A7961D7@exchange-il> Yes, there are GOB headers in the stream. So I understand that a change of GOB is like a change of VOP . Prediction cannot be made from one GOB to another just as it can not be made from one VOP to another. Is this correct? Ariel -----Original Message----- From: Gary Sullivan [mailto:garysull@windows.microsoft.com] Sent: Saturday, May 24, 2024 11:56 PM To: Ariel David Subject: RE: [M4IF Technotes] h.263 motion vector predictor Does that stream have GOB headers in it? I'm trying to remember whether the presence of GOB headers cuts the prediction of MVs from the MBs in the row above. A quick look in either the H.263 or MPEG-4 spec should answer that. -Gary +> -----Original Message----- +> From: Ariel David [mailto:Ariel.David@ParthusCeva.com] +> Sent: Thursday, May 22, 2024 12:27 AM +> To: Gary Sullivan +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor +> +> +> Hi, +> I'm sorry to nag about this issue, but there is something I +> still don't understand. +> +> I am currently working on decoding the test stream +> "vcon-ge-16-L1.m4v". This is a short header video stream. +> When I decode the motion vectors using the median predictor +> the output picture comes out bad. +> When I decode the motion vectors using the left macroblock +> only as the predictor the picture comes out OK. +> This is the reason for my questions about the subject. +> There is simply something that I don't understand here. +> +> As far as I can see there can a number of answers: +> 1. The stream was not encoded correctly in that the +> predictors used in the encoder are not median. +> 2. This is some special case of prediction that I am not aware of. +> +> Thanks for the previous answers, +> +> Ariel +> +> +> +> +> -----Original Message----- +> From: Gary Sullivan [mailto:garysull@windows.microsoft.com] +> Sent: Wednesday, May 21, 2024 7:23 PM +> To: Ariel David; technotes@lists.m4if.org +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor +> +> +> Skipped MBs in P pictures use (0,0) MVs. Doesn't matter +> whether short +> header or not. +> +> -Gary S. +> +> +> -----Original Message----- +> +> From: technotes-admin@lists.m4if.org +> +> [mailto:technotes-admin@lists.m4if.org] On Behalf Of Ariel David +> +> Sent: Wednesday, May 21, 2024 8:25 AM +> +> To: technotes@lists.m4if.org +> +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor +> +> +> +> +> +> Maybe the problem is in my median prediction. +> +> +> +> are predictors that are skipped macroblock computed +> +> differently or are they considered 0,0 motion vector. +> +> For example: +> +> if the top left MV is 0,0, the top MV is 1,1 and the left is +> +> skipped will the predictor be 0,0 (regular median) or 1,1 +> +> (since the left is not considered). +> +> +> +> Ariel +> +> +> +> -----Original Message----- +> +> From: Herbert Thoma [mailto:tma@iis.fhg.de] +> +> Sent: Wednesday, May 21, 2024 5:39 PM +> +> To: Ariel David +> +> Cc: technotes@lists.m4if.org +> +> Subject: Re: [M4IF Technotes] h.263 motion vector predictor +> +> +> +> +> +> Ariel David schrieb: +> +> > +> +> > Hi, +> +> > +> +> > I am trying to decode mpeg-4 video files with short header +> +> (h.263 format). +> +> > I've looked though the mpeg-4 standard and found not +> +> mention of a different method for motion vector predictor. +> +> > The mpeg-4 method is the median of the 3 adjacent macroblocks. +> +> > This does not seem to work in h.263 (mpeg-4 with short headers). +> +> +> +> Why not? It's exactly the same in H.263. +> +> +> +> Herbert. +> +> +> +> > I assume it's more like mpeg-2, either left or top +> +> macroblock, but I can't find any mention in the standard. +> +> > +> +> > Can someone help me out? +> +> > +> +> > Thanks, +> +> > +> +> > Ariel +> +> > +> +> > _______________________________________________ +> +> > Technotes mailing list +> +> > Technotes@lists.m4if.org +> +> > http://lists.m4if.org/mailman/listinfo/technotes +> +> +> +> -- +> +> 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/ +> +> +> +> +> +> _______________________________________________ +> +> Technotes mailing list +> +> Technotes@lists.m4if.org +> +> http://lists.m4if.org/mailman/listinfo/technotes +> +> +> +> From tm991058 fh-stpoelten.ac.at Sun May 25 11:58:40 2003 From: tm991058 fh-stpoelten.ac.at (tm991058) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] Player Message-ID: <002a01c3229b$d65d2650$0200a8c0@laptop> hi! Thanks for this many answers to my MPEG-4 Player posting! I'll inform everyone, who mentioned that s/he is interessted when I'm finished! Regards, Karin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030525/c4536025/attachment.html From tm991058 fh-stpoelten.ac.at Sun May 25 19:22:36 2003 From: tm991058 fh-stpoelten.ac.at (tm991058) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] mpeg4 player Message-ID: <004b01c322d9$dac55940$0200a8c0@laptop> hi all! Because of that great interest I'll send the overview when finished to the technote forum! and maybe it will be made available on the M4IF website: [Rob Koenen (M4IF) wrote:] "yes, I am very interested in your overview. We can make the paper or its data available from M4IF's website when it is done. It could add good data to our upcoming Products database." so please do not send more mails that you are interessted! :-) kind regards, karin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030525/7f9bcc25/attachment.html From tma iis.fhg.de Sun May 25 21:01:57 2003 From: tma iis.fhg.de (Herbert Thoma) Date: Wed Jul 30 14:10:33 2003 Subject: [M4IF Technotes] h.263 motion vector predictor References: <988BE481ACC95C429DCB909F74A3163A7961D7@exchange-il> Message-ID: <3ED10515.1E50BD42@iis.fhg.de> Ariel David schrieb: > > Yes, > there are GOB headers in the stream. > So I understand that a change of GOB is like a change of VOP . > Prediction cannot be made from one GOB to another just as it can not be made from one VOP to another. > > Is this correct? Yes, this is correct. But the analogon of GOB in H.263 is Video Packet (VP) in MPEG-4, not Video Object Plane (VOP). > Ariel > > -----Original Message----- > From: Gary Sullivan [mailto:garysull@windows.microsoft.com] > Sent: Saturday, May 24, 2024 11:56 PM > To: Ariel David > Subject: RE: [M4IF Technotes] h.263 motion vector predictor > > Does that stream have GOB headers in it? I'm trying to remember whether > the presence of GOB headers cuts the prediction of MVs from the MBs in > the row above. A quick look in either the H.263 or MPEG-4 spec should > answer that. > > -Gary > > +> -----Original Message----- > +> From: Ariel David [mailto:Ariel.David@ParthusCeva.com] > +> Sent: Thursday, May 22, 2024 12:27 AM > +> To: Gary Sullivan > +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor > +> > +> > +> Hi, > +> I'm sorry to nag about this issue, but there is something I > +> still don't understand. > +> > +> I am currently working on decoding the test stream > +> "vcon-ge-16-L1.m4v". This is a short header video stream. > +> When I decode the motion vectors using the median predictor > +> the output picture comes out bad. > +> When I decode the motion vectors using the left macroblock > +> only as the predictor the picture comes out OK. > +> This is the reason for my questions about the subject. > +> There is simply something that I don't understand here. > +> > +> As far as I can see there can a number of answers: > +> 1. The stream was not encoded correctly in that the > +> predictors used in the encoder are not median. > +> 2. This is some special case of prediction that I am not aware of. > +> > +> Thanks for the previous answers, > +> > +> Ariel > +> > +> > +> > +> > +> -----Original Message----- > +> From: Gary Sullivan [mailto:garysull@windows.microsoft.com] > +> Sent: Wednesday, May 21, 2024 7:23 PM > +> To: Ariel David; technotes@lists.m4if.org > +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor > +> > +> > +> Skipped MBs in P pictures use (0,0) MVs. Doesn't matter > +> whether short > +> header or not. > +> > +> -Gary S. > +> > +> +> -----Original Message----- > +> +> From: technotes-admin@lists.m4if.org > +> +> [mailto:technotes-admin@lists.m4if.org] On Behalf Of Ariel David > +> +> Sent: Wednesday, May 21, 2024 8:25 AM > +> +> To: technotes@lists.m4if.org > +> +> Subject: RE: [M4IF Technotes] h.263 motion vector predictor > +> +> > +> +> > +> +> Maybe the problem is in my median prediction. > +> +> > +> +> are predictors that are skipped macroblock computed > +> +> differently or are they considered 0,0 motion vector. > +> +> For example: > +> +> if the top left MV is 0,0, the top MV is 1,1 and the left is > +> +> skipped will the predictor be 0,0 (regular median) or 1,1 > +> +> (since the left is not considered). > +> +> > +> +> Ariel > +> +> > +> +> -----Original Message----- > +> +> From: Herbert Thoma [mailto:tma@iis.fhg.de] > +> +> Sent: Wednesday, May 21, 2024 5:39 PM > +> +> To: Ariel David > +> +> Cc: technotes@lists.m4if.org > +> +> Subject: Re: [M4IF Technotes] h.263 motion vector predictor > +> +> > +> +> > +> +> Ariel David schrieb: > +> +> > > +> +> > Hi, > +> +> > > +> +> > I am trying to decode mpeg-4 video files with short header > +> +> (h.263 format). > +> +> > I've looked though the mpeg-4 standard and found not > +> +> mention of a different method for motion vector predictor. > +> +> > The mpeg-4 method is the median of the 3 adjacent macroblocks. > +> +> > This does not seem to work in h.263 (mpeg-4 with short headers). > +> +> > +> +> Why not? It's exactly the same in H.263. > +> +> > +> +> Herbert. > +> +> > +> +> > I assume it's more like mpeg-2, either left or top > +> +> macroblock, but I can't find any mention in the standard. > +> +> > > +> +> > Can someone help me out? > +> +> > > +> +> > Thanks, > +> +> > > +> +> > Ariel > +> +> > > +> +> > _______________________________________________ > +> +> > Technotes mailing list > +> +> > Technotes@lists.m4if.org > +> +> > http://lists.m4if.org/mailman/listinfo/technotes > +> +> > +> +> -- > +> +> 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/ > +> +> > +> +> > +> +> _______________________________________________ > +> +> Technotes mailing list > +> +> Technotes@lists.m4if.org > +> +> http://lists.m4if.org/mailman/listinfo/technotes > +> +> > +> > +> > > _______________________________________________ > Technotes mailing list > Technotes@lists.m4if.org > http://lists.m4if.org/mailman/listinfo/technotes -- 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 john.arthur octaga.com Mon May 26 02:17:20 2003 From: john.arthur octaga.com (John Arthur) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] MPEG-4 Player In-Reply-To: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: <001b01c32313$cb1a8710$f701a8c0@Hoth> Hello Karin, You can download an evaluation version of the Octagon MPEG-4 Player from www.octaga.com. Product sheets, release notes and details about features and supported functionality can also be obtained here. Best regards John Arthur ***************************************************************** John K. Arthur Chief Technology Officer Octaga e-mail: john.arthur@octaga.com web: www.octaga.com Tel: +47 97 03 33 82 Fax: +47 23 00 91 28 ***************************************************************** -----Original Message----- From: technotes-admin@lists.m4if.org [mailto:technotes-admin@lists.m4if.org] On Behalf Of tm991058 Sent: 23 May 2024 16:15 To: technotes@lists.m4if.org Subject: [M4IF Technotes] MPEG-4 Player Hi! During my diploma thesis, which is about MPEG-4 I write about MPEG-4 player. I would like to give an overview over all MPEG-4 players and their abilities, available on the market by now. The chapter in my diploma thesis should provide the details about all players available: - the name of the player, - the company which has developed the player + internetsite - and the internetsite which contains the list of the abilities of the player (or if there is no internetsite I write down the main abilities) Maybe you can help me collecting players... or maybe you have a player in development which should not miss in my overview! I would be happy about every answer I get, which helps me to complete my overview! Thanks, Karin p.s.: If someone is interessted in the complete overview.. I can send it to you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030526/0b820b40/attachment.html From Apoorva soc-soft.com Mon May 26 12:32:19 2003 From: Apoorva soc-soft.com (Apoorva Ankad) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] RMS Value is more than -30dB for Right Channel in a Channel Pair Element Message-ID: Dear all, According to the test procedure, I am checking for the RMS Value of the original test stream and the one decoded by the FAAD decoder. It is working fine for mono channel (Getting RMS values less than -100dB). But for stereo, the RMS value is less than -100dB for the Left channel where as for the Right Channel the value is more than -30dB (more than what is recommended) So I thought that, there should be some problem with either the M/S, I/S or PNS decoding. Can any one of you put some light on this........................ Apoorva. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030526/f9b2b2ad/attachment.html From peter.schickel bitmanagement.de Mon May 26 09:32:38 2003 From: peter.schickel bitmanagement.de (Peter Schickel) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] MPEG-4 Player References: <00a701c32135$b8421e30$0200a8c0@laptop> Message-ID: <3ED1B506.401B7480@bitmanagement.de> Hi Karin, please take a look at the 2D and 3D MPEG-4 player from Bitmanagement Software. You can request a evaluation and demo version at http://www.bitmanagement.de Some overview information is available at the M4IF products section at http://www.m4if.org/products/?PHPSESSID=0c622777989824aaf825206fd137e8a3#15 Best regards, Peter Bitmanagement Software GmbH http://www.bitmanagement.de tm991058 wrote: > Hi! During my diploma thesis, which is about MPEG-4 I write about > MPEG-4 player. I would like to give an overview over all MPEG-4 > players and their abilities, available on the market by now.The > chapter in my diploma thesis should provide the details about all > players available:- the name of the player,- the company which has > developed the player + internetsite- and the internetsite which > contains the list of the abilities of the player (or if there is no > internetsite I write down the main abilities) Maybe you can help me > collecting players... or maybe you have a player in development which > should not miss in my overview! I would be happy about every answer I > get, which helps me to complete my overview! Thanks,Karin p.s.: If > someone is interessted in the complete overview.. I can send it to > you, when it is finished!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030526/d9b41ab9/attachment.html From CC_Ju mtk.com.tw Mon May 26 15:33:14 2003 From: CC_Ju mtk.com.tw (CC_Ju@mtk.com.tw) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] Formal 14496-4 version2 conformance test bistreams available??? Message-ID: Hi all: We hope to know whether the 14496-4 version2 comformance test bistreams including advanced simple profile available. Anybody can kindly tell us and where to get them?? We appreicate your sincere help. BR, Peter From christian.kloeckner wdr.de Mon May 26 11:00:28 2003 From: christian.kloeckner wdr.de (Christian.Kloeckner) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] MPEG-4 Player Message-ID: Karin, You might add Apple's Quicktime to Olivier's substantial list. I'm also interested in Your overview , Christian ____________________________________________ Christian Kl?ckner WDR, Technologie-Referat 50600 K?ln, Germany Tel: +49 (0) 221 220 9278 Fax: +49 (0) 221 220 3167 mailto: christian.kloeckner@wdr.de PGP: Public Key @ http://pgp.mit.edu ____________________________________________ From deepak_kotur yahoo.com Mon May 26 04:27:39 2003 From: deepak_kotur yahoo.com (deepak kotur) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] tool to convert mp4 file to mpeg-4 raw bitstreams Message-ID: <20030526102739.92985.qmail@web40803.mail.yahoo.com> hi all, is there any free tool avaliable which will convert mp4 file into an mpeg-4 raw bitstream file. or is there any method to convert it. Regards deepak __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com From oamato wanadoo.fr Mon May 26 18:22:59 2003 From: oamato wanadoo.fr (Olivier Amato) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] MPEG-4 Player References: Message-ID: <008101c3239a$b72755d0$0a00000a@beck> Christian, > You might add Apple's Quicktime to Olivier's substantial list. You're right, QuickTime 6 is certainly the main player supporting ISMA content, with some restrictions ( AAC-LC, MP4 file format, but Simple Profile video only ). There are also other players or components which seem to decode some parts of MPEG-4 specifications : 1?/ Media Excel DirectShow filters http://www.mediaexcel.com/filters.htm 2?/ 3ivX http://www.3ivx.com/technology/ 3?/ Mayah AAC Recorder http://www.mayah.com/content/products/aac/content.html 4?/ 4Stream 4Play http://www.4stream.de/frames/main/products.htm 5?/ iVast Experience Player http://www.ivast.com/products/player.html 6?/ XviD http://cutka.szm.sk/xvid/xvid.html http://www.roeder.goe.net/~koepi/xvid.shtml http://www.xvid.org/ Olivier From Vinay soc-soft.com Wed May 28 11:42:16 2003 From: Vinay soc-soft.com (Vinay K) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] how to test MPEG4 AAC encoder Message-ID: Dear MPEG experts, Can any one please tell me how to test the MPEG4 AAC encoder? Other than conformance testing, is there any other criteria for testing the encoder? Thanks in advance. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030528/b84f9654/attachment.html From tm991058 fh-stpoelten.ac.at Wed May 28 15:22:54 2003 From: tm991058 fh-stpoelten.ac.at (tm991058) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] MPEG-4 compliant video and image formats Message-ID: <024001c32513$dd36ac60$0200a8c0@laptop> Hello! Could anyone tell me which are the compliant video and image formats standardized in the mpeg-4 standard? or does anyone know a document where I can find out about that? I found out some formats that should be MPEG-4 compliant... for video: m4v (= cmp) mpeg 1 und 2 for images: jpeg, gif, png Is this correct? are there missing some formates? Thanks! Best regards! Karin -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030528/516ed239/attachment.html From sps iis.fhg.de Wed May 28 17:24:58 2003 From: sps iis.fhg.de (Ralph Sperschneider) Date: Wed Jul 30 14:10:34 2003 Subject: [M4IF Technotes] Re: how to test MPEG4 AAC encoder In-Reply-To: References: Message-ID: <3ED4C6BA.4040108@iis.fhg.de> Dear Vinay, the only criterium an encoder has to fulfill is that it writes leagal MPEG-4 access units (in other words: There is no quality criterion). In order to test this just encode as many different data in as many different configurations as feasible for you (as a starting point, you should try to generate sequences similar to the conformance test sequences). Then try to decode this data with the MPEG-4 reference decoder. Make sure you use the most recent version of the reference software, weekly snapshots are available (to MPEG members only) on an ftp site of the University of Hannover. Everything is okay as long as the decoder decodes your data without any dubious warning and the decoded waveform sounds as you would expect it. If the deocder fails to decode your data, it might have two reasons: Eihter your data is not conform, or the decoder is buggy or not fully implemented. If you expect the latter, please inform the MPEG-4 Audio reference software development group by writing an e-mail to mpeg4_vm@tnt.uni-hannover.de. Best regards, Ralph Vinay K wrote: > Dear MPEG experts, > > > > Can any one please tell me how to test the MPEG4 AAC encoder? > > Other than conformance testing, is there any other criteria for testing > the encoder? > > > > Thanks in advance. > > > > > > > -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 FhG IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:sps@iis.fhg.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From DeadboLT9 aol.com Wed May 28 01:33:52 2003 From: DeadboLT9 aol.com (DeadboLT9@aol.com) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] tool to convert from mp4 to mp3 Message-ID: hi, do you know some tool to convert an mp4 file down to a mp3? aubrey -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030528/c576f119/attachment.html From bph_uvce yahoo.com Thu May 29 02:48:14 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] Handles to ES Message-ID: <20030529084814.25235.qmail@web40309.mail.yahoo.com> Hi all, How do I get the handles to the Elementary stream to open it (or channel set up mechanism as referred in 14496-1 systems document),so that I can acess a video object associated with that ES? 2.To access (the content of) a video object what do I do with scene description stream? Thanks in advance. b.p.harish __________________________________ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com From jens.rennert mobilesmartsinc.com Thu May 29 18:42:23 2003 From: jens.rennert mobilesmartsinc.com (Jens Rennert) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] how to verify AAC decoder output Message-ID: <200305291742.23022.jens.rennert@mobilesmartsinc.com> Hello everyone, I would like to know what the usual procedure is to verify the correctness of an AAC decoder output. I would assume that there are reference audio files (decoded with a reference decoder) which could be compared to the decoders output. Would this compare be a bit true compare? Where can I get reference streams to compare my decoders output with? Thanks in advance Jens -- Jens Rennert --------------------------------------- MobileSmarts, Inc. 2900 Gordon Avenue, Suite 203 Santa Clara, CA 95051 (P) 408-328-9331 (F) 408-735-1163 http://www.mobilesmartsinc.com --------------------------------------- From tozcelebi ku.edu.tr Wed May 28 22:15:01 2003 From: tozcelebi ku.edu.tr (Tanir Ozcelebi) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] The use of Hadamard Transform in JVT mode selection Message-ID: <001b01c32545$0e38cb00$9b0212ac@Kapptan> Dear experts, Can anyone please explain the use of the Hadamard Transform in JVT encoder's mode selection? Thanks in advance. Tanir Ozcelebi MS Student Koc University Turkey -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030528/16d1a742/attachment.html From heeyeoly CS.UCLA.EDU Thu May 29 22:54:51 2003 From: heeyeoly CS.UCLA.EDU (John Heeyeol Yu) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] MoMusys FGS Message-ID: Hi all I am Ph.D student of computer science. For my experiment I want to use MoMusys MPEG4 FGS. Could you tell me where I can get one. Furthermore I am looking for sample cfg, ctl for sample yuv, such as foreman.yuv because I am not good at MPEG4. Best regards From anil.kumar ittiam.com Fri May 30 11:44:37 2003 From: anil.kumar ittiam.com (Anil Kumar) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] AVI to CD format Converter Message-ID: <45A1F95BB9D7D84FAB0A1EB4D67EEF9638CE9C@is01ex01.ittiam.com> Hi All, Can anyone please tell me where (if at all) can I find a .avi format to VCD (I think this is the .dat format) converter. Thanks in advance, Anil -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030530/78d73d2b/attachment.html From ramki emuzed.com Fri May 30 12:19:24 2003 From: ramki emuzed.com (Ramkishor Korada) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] AVI to CD format Converter References: <45A1F95BB9D7D84FAB0A1EB4D67EEF9638CE9C@is01ex01.ittiam.com> Message-ID: <02f501c3266f$416d18c0$1b0aa8c0@blr.emuzed.com> Hi, Check the URL http://www.mpegx.com/ & www.vcdhelp.com for various software utilities related to multimedia. regards, ramkishor Architect - Video Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: Anil Kumar To: technotes@lists.m4if.org Sent: Friday, May 30, 2024 10:44 AM Subject: [M4IF Technotes] AVI to CD format Converter Hi All, Can anyone please tell me where (if at all) can I find a .avi format to VCD (I think this is the .dat format) converter. Thanks in advance, Anil -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030530/a13f53f4/attachment.html From garysull windows.microsoft.com Fri May 30 07:52:09 2003 From: garysull windows.microsoft.com (Gary Sullivan) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] The use of Hadamard Transform in JVT mode selection Message-ID: <91D7F2CEE3425A4A9D11311D09FCE24602A34533@WIN-MSG-10.wingroup.windeploy.ntdev.microsoft.com> Skipped content of type multipart/alternative From ram_mandali hotmail.com Fri May 30 17:33:37 2003 From: ram_mandali hotmail.com (Ram Mandali) Date: Wed Jul 30 14:10:35 2003 Subject: [M4IF Technotes] MPEG4 source code Message-ID: Hi All, I'm looking for the latest MPEG4 encoder and decoder code. Please kindly let me know where I can get it (for free). Also the algorithm if possible. That will be of great help to me. Thanks in advance. Regards Ram Mandali. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030530/fd41c8b6/attachment.html From rob.koenen m4if.org Fri May 30 16:05:23 2003 From: rob.koenen m4if.org (Rob Koenen (M4IF)) Date: Wed Jul 30 14:10:36 2003 Subject: [M4IF Technotes] MPEG4 source code In-Reply-To: Message-ID: Ram, check M4IF's Resources pages. Lots of (free) code is referenced there. www.m4if.org/resources.php Rob -----Original Message----- From: Ram Mandali [mailto:ram_mandali@hotmail.com] Sent: Friday, May 30, 2024 15:34 To: technotes@lists.m4if.org Subject: [M4IF Technotes] MPEG4 source code Hi All, I'm looking for the latest MPEG4 encoder and decoder code. Please kindly let me know where I can get it (for free). Also the algorithm if possible. That will be of great help to me. Thanks in advance. Regards Ram Mandali. -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20030530/73cd1779/attachment.html From bph_uvce yahoo.com Sat May 31 02:50:30 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:36 2003 Subject: [M4IF Technotes] (no subject) Message-ID: <20030531085030.57515.qmail@web40303.mail.yahoo.com> -----Original Message----- From: B.P.Harish [mailto:bph_uvce@yahoo.com] Sent: Friday, May 30, 2024 8:44 AM Dear John, Here is the MoMuSys MPEG4 package sent as an attachment. It has sample cfg & .ctl files for some .yuv files. U can write ur own .cfg .ctl for any .yuv file along similar lines. Regards, b.p.harish ===== bevina.p.harish __________________________________ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com From bph_uvce yahoo.com Sat May 31 02:51:15 2003 From: bph_uvce yahoo.com (B.P.Harish) Date: Wed Jul 30 14:10:36 2003 Subject: [M4IF Technotes] MoMuSys FGS Message-ID: <20030531085115.39367.qmail@web40311.mail.yahoo.com> -----Original Message----- From: B.P.Harish [mailto:bph_uvce@yahoo.com] Sent: Friday, May 30, 2024 8:44 AM Dear John, Here is the MoMuSys MPEG4 package sent as an attachment. It has sample cfg & .ctl files for some .yuv files. U can write ur own .cfg .ctl for any .yuv file along similar lines. Regards, b.p.harish ===== bevina.p.harish __________________________________ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com