From paragchaurasia rediffmail.com Thu Jan 1 09:33:51 2004 From: paragchaurasia rediffmail.com (Parag Chaurasia) Date: Thu Jan 1 04:51:27 2004 Subject: [Mp4-tech] info about decoding inter 4mv Message-ID: <20040101093206.20930.qmail@webmail27.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040101/596b6ae7/attachment.html -------------- next part -------------- Hi, In MPEG-4 Video, decoding of (1 or 4) Motion Vectors per macroblock is completely specified by the standard. There isn't scope for any algorithm. Have a look at sections 6.2.6 and 7.6.5 of MPEG-4 Part 2 (Visual). Best Regards, Parag. On Wed, 31 Dec 2023 Pooja Madan wrote : >hi everybody, >i need information regarding the decoding of 4 motion vectors per macro >block and the corresponding algorithms. >any relevant websites will also be very helpful. >thanx in advance >pooja > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From anees_sh yahoo.com Fri Jan 2 06:40:07 2004 From: anees_sh yahoo.com (=?iso-8859-1?q?Anees=20Shahul?=) Date: Fri Jan 2 01:55:25 2004 Subject: [Mp4-tech] (no subject) Message-ID: <20040102064007.29685.qmail@web14002.mail.yahoo.com> Hi Is a target of 15 to 20 man months reasonable to do a MPEG-4 Encoder in simple profile Level0 The idea is to develop it in Java.... The team is relatively new to the technology.. ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html From STuccitto chipwrights.com Fri Jan 2 09:38:29 2004 From: STuccitto chipwrights.com (Tuccitto, Sal) Date: Fri Jan 2 09:54:59 2004 Subject: [Mp4-tech] (no subject) Message-ID: <93A4BBB9515ED411AE9D00508BD955A5A01B37@intranet> Anees, Myself and another individual developed a MPEG4 simple profile level3 encoder in 12 man months, this included writing the code in C to model the data flow and work out algorithmic issues and then optimizing in assembly for the dsp architecture targeted. So 15 to 20 man months should be reasonable. Hope this helps. Sal Tuccitto Chipwrights, Inc. -----Original Message----- From: Anees Shahul [mailto:anees_sh@yahoo.com] Sent: Friday, January 02, 2024 1:40 AM To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] (no subject) Hi Is a target of 15 to 20 man months reasonable to do a MPEG-4 Encoder in simple profile Level0 The idea is to develop it in Java.... The team is relatively new to the technology.. ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From pkudumakis crl.co.uk Mon Jan 5 09:50:53 2004 From: pkudumakis crl.co.uk (Panos Kudumakis) Date: Mon Jan 5 05:04:22 2004 Subject: [Mp4-tech] DRM Message-ID: <3782700644@crl.co.uk> Christophe If you are interested to use MPEG-4 IPMP Extensions we can help The spec is out since Oct 2003 The Ref Soft and Conformance part of this standard it is expected to be finalised in March 2004 MPEG meeting For more info have a look at http://www.crl.co.uk/projects/moses and let me know your questions Best wishes for 2004! Panos Kudumakis MOSES project co-ordinator CRL Dawley Rd Hayes Middlesex UB3 1HH tel: +44 (0)20 8848 6405 fax +44 (0)20 8848 6543 ____________________Reply Separator____________________ Subject: [Mp4-tech] DRM Author: "Christophe Lenaerts" Date: 12/31/03 6:30 PM Hi, I'm looking for a DRM solution that works for MPEG 4. We currently have a solution running on the Windows Media DRM, and would like to switch to MPEG 4. Do you know of any out of the box solutions? Or if not, someone that already has something in place and could share their experience? Thanks you very much, and best wishes for 2004! Christophe ------------------------------------------------------------------------ --------------------- Christophe Lenaerts - CEO Telemak Tel (+32) 2 346 11 14 Fax (+2) 53 68 33 68 Mobile (+32) 475 47 18 15 ------------------------------------------------------------------------ --------------------- _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -********************************************************************* This communication contains information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). Please note that any unauthorised distribution, copying or use of this communication, or the information in it, is strictly prohibited. If you have received this communication in error, please notify us by email or by telephone (+44 20 8848 9779) and then delete the email and any copies of it. This communication is from Central Research Laboratories Ltd., whose principal office is at Dawley Road, Hayes, Middlesex, England. This footnote also confirms that this email message has been checked for the presence of computer viruses. ********************************************************************** From for4ums rediffmail.com Tue Jan 6 06:03:31 2004 From: for4ums rediffmail.com (nsh s h) Date: Tue Jan 6 01:17:41 2004 Subject: [Mp4-tech] AAN Implementation Message-ID: <20040106060306.5065.qmail@webmail36.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040106/c0410755/attachment.html -------------- next part -------------- Any pointers to where I can find AAN algorithm and/or its implementation for fwd DCT. Also is this the best algorithm for DCT. Regards, From binuninan USHUSTECH.COM Tue Jan 6 13:35:06 2004 From: binuninan USHUSTECH.COM (Binuninan) Date: Tue Jan 6 03:11:02 2004 Subject: [Mp4-tech] Query regarding postprocessing algorithm for MPEG 4 Message-ID: <79DD1BC58DD7AC418EC0D1D5B169ACB8F41A24@mail.ushustech.com> Hi All, We were in the processes of developing a deblocking filter for MPEG4 video receiver. We have obtained an algorithm wherein a value called Quant_scale (probably quantization scale) has been referred to in order to determine the existence of true or false edge. Can any of you give an idea as to what the value of Quant_scale will be?? Anticipating an early reply, Thanking you, With Regards Binu Ninan From anderson_scottm-mp4 yahoo.com Tue Jan 6 00:37:17 2004 From: anderson_scottm-mp4 yahoo.com (anderson_scottm-mp4@yahoo.com) Date: Tue Jan 6 03:46:25 2004 Subject: [Mp4-tech] AAN Implementation In-Reply-To: <20040106060306.5065.qmail@webmail36.rediffmail.com> Message-ID: <20040106083717.7840.qmail@web41308.mail.yahoo.com> > Any pointers to where I can find AAN algorithm and/or its implementation for fwd > DCT. Independent JPEG Group http://www.ijg.org/ > Also is this the best algorithm for DCT. I found that LLM was better than AAN. Intel has (had?) an application note that also has an accurate, fast dct - I found it was better than LLM. Regards, Scott. From paragchaurasia rediffmail.com Tue Jan 6 13:01:26 2004 From: paragchaurasia rediffmail.com (Parag Chaurasia) Date: Tue Jan 6 08:19:40 2004 Subject: [Mp4-tech] Query regarding postprocessing algorithm for MPEG 4 Message-ID: <20040106130059.18100.qmail@webmail27.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040106/6a2e4f9b/attachment.html -------------- next part -------------- Hi, In general, quantization parameter (of the macroblock to which pixel belongs) is used in various deblocking filter algorithms. So, quant_scale refers to the absolute quantization parameter value (which may change from macroblock to macroblock within a VOP). In MPEG-4 Video, quant_scale appears in video_packet_header() and indicates the absolute value of quantization parameter to be used for the macroblock. It's "default" length is 5 bits and so value ranges from 1 to 31. Please note that vop_quant appearing for each coded VOP in VideoObjectPlane() also specifies absolute value of quantization parameter (and so quant_scale in your algorithm may also refer to it!) Regards, Parag. On Tue, 06 Jan 2024 Binuninan wrote : > >Hi All, > >We were in the processes of developing a deblocking filter for MPEG4 video >receiver. We have obtained an algorithm wherein a value called Quant_scale >(probably quantization scale) has been referred to in order to determine the >existence of true or false edge. Can any of you give an idea as to what the >value of Quant_scale will be?? >Anticipating an early reply, > >Thanking you, > >With Regards > >Binu Ninan >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From nitgupta hss.hns.com Tue Jan 6 20:15:40 2004 From: nitgupta hss.hns.com (nitgupta@hss.hns.com) Date: Tue Jan 6 09:58:32 2004 Subject: [Mp4-tech] Test streams for Mpeg4 encoder conformance Message-ID: Hi all, I have implemented a Mpeg4 encoder. I want to test it for conformance. Can anybody please let me know where i can find the reference test streams for my encoder testing. Is this information also available that what specific module of the Mpeg4 encoder a particular test stream is trying to test (if at all) ? Awaiting an early response. Thanx & Regards, Nitin Gupta. From ersin.esen bilten.metu.edu.tr Tue Jan 6 17:24:36 2004 From: ersin.esen bilten.metu.edu.tr (Ersin Esen) Date: Tue Jan 6 10:28:29 2004 Subject: [Mp4-tech] MPEG-4 AVC Encoder Card : DS-400XX Message-ID: <056d01c3d469$31e60a80$6c0c10ac@bilten.metu.edu.tr> Is there anyone around here, who has tested DSP Research's DS-400 MPEG-4 AVC encoder cards? Are there any other hardware AVC encoders? Best regards. -ersin esen TUBITAK Bilten Ankara, Turkey -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040106/9ece4da8/attachment.html From stefan.goor ucd.ie Tue Jan 6 18:30:45 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Tue Jan 6 13:46:19 2004 Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss Message-ID: Hey All, Hopefully someone can help me with this. I have used the MPEG4IP tools to create hinted mp4 files that contain mpeg4 bitstreams created with the MS Encoder Reference Software and I have placed these files on the Darwin Streaming Server to allow RTSP access. When I write the payload of the packets received by the RTSP client to a file, I can decode it with the MS Reference Decoder. However if I drop any packet, the decoder stops with a dialog box on the screen that says "Debug Error!... ...abnormal program termination..." and the decoder prints the following message in the dos window: Assertion failed: iMbType >= 0 && iMbType <= 3, file d:\ms_om\sys\decoder\mbheaddec.cpp, line 476 >From what I understand, the MPEG-4 decoder should be able to handle losses and corruption (isn't one of the main goals of MPEG-4 to be highly error resiliant?). Could anyone explain what the problem may be and how I may get around it? I would like to be able to decode content has been sent over a network and that may have approximately 0.5% packet loss. Also, I assume that each packet or at least an integer number of packets corresponds to a single frame, is this true? >From RFC 1889 for RTP, I see that there is a marker bit that generally indicates frame boundaries. In MPEG-1 and 2 there was a specific code that determined the start of a frame, is there something similar for mpeg4 video stream? Any help with these problems and questions would be greatly apreciated, Many thanks, Stefan From murphychen mail2000.com.tw Wed Jan 7 10:46:12 2004 From: murphychen mail2000.com.tw (Murphy Chen) Date: Tue Jan 6 22:00:48 2004 Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files Message-ID: <1073443572.9108.murphychen@mail2000.com.tw> Dear All, How many AAC raw data blocks are contained in an audio sample? The specification seems not have specified this? My idea is that if we can make sure only one raw data block is contained in an audio sample, an ADTS stream can be generated via adding frame header to each audio sample if PCE is not existed. And if PCE exists, an ADIF stream can be generated via generating an ADIF header, followed by audio samples. In this way, the AAC decoder originally designed for accepting ADIF and ADTS formats can still be used for MPEG-4 files without any modification. Best Regards, Murphy From s.wright indigovision.com Wed Jan 7 10:43:28 2004 From: s.wright indigovision.com (Steve Wright) Date: Wed Jan 7 05:57:38 2004 Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss In-Reply-To: Message-ID: <000b01c3d50b$163a1e50$12000a0a@PORTREE1> Hi, MPEG-4 provides the tools for error resilience but the designer has to implement/use the tools. Maybe the MS Encoder/Decoder Reference Software does not include error resilience functionality? Here at IndigoVision our hardware MPEG-4 Codec IP implements Video packets with HEC and synchronization markers in the encoder hardware. In the decoder we have error resync and concealment in hardware and data partitioning and RVLC's in software. This means our MPEG-4 Codec IP can operate over lossy networks where packet loss is encountered with minimum degradation of video quality to the user. The start of a frame in MPEG-4 is marked by the VOPStartCode which has a 32 bit value of 0001b6. Hope that helps. Steve Wright ASIC Manager IndigoVision Limited The Edinburgh Technopole Bush Loan, Edinburgh Scotland, UK EH26 0PJ +44 (0)131 475 7346 +44 (0) 7780 633101 (mobile) +44 (0)131 475 7201 (Fax) http://www.indigovision.com/site/sections/products/mainstream.asp -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stefan A. Goor Sent: 06 January 2024 18:31 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss Hey All, Hopefully someone can help me with this. I have used the MPEG4IP tools to create hinted mp4 files that contain mpeg4 bitstreams created with the MS Encoder Reference Software and I have placed these files on the Darwin Streaming Server to allow RTSP access. When I write the payload of the packets received by the RTSP client to a file, I can decode it with the MS Reference Decoder. However if I drop any packet, the decoder stops with a dialog box on the screen that says "Debug Error!... ...abnormal program termination..." and the decoder prints the following message in the dos window: Assertion failed: iMbType >= 0 && iMbType <= 3, file d:\ms_om\sys\decoder\mbheaddec.cpp, line 476 >From what I understand, the MPEG-4 decoder should be able to handle losses and corruption (isn't one of the main goals of MPEG-4 to be highly error resiliant?). Could anyone explain what the problem may be and how I may get around it? I would like to be able to decode content has been sent over a network and that may have approximately 0.5% packet loss. Also, I assume that each packet or at least an integer number of packets corresponds to a single frame, is this true? >From RFC 1889 for RTP, I see that there is a marker bit that generally indicates frame boundaries. In MPEG-1 and 2 there was a specific code that determined the start of a frame, is there something similar for mpeg4 video stream? Any help with these problems and questions would be greatly apreciated, Many thanks, Stefan _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From rob.koenen mpegif.org Wed Jan 7 12:07:29 2004 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Wed Jan 7 06:13:01 2004 Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss In-Reply-To: <000b01c3d50b$163a1e50$12000a0a@PORTREE1> Message-ID: <000701c3d50e$713ac040$0000fea9@corp.intertrust.com> That's right. The syntax of MPEG-4 allows you to write error-resilient decoders using the tools Steve is referring to. How you do build such decoders is not specified in the standard - it's an area where vendors can (and do) compete. Some decoders do not include any error robustness processing, and may indeed fail when confronted with errors. Best, Rob > -----Original Message----- > From: Steve Wright [mailto:s.wright@indigovision.com] > Sent: Wednesday, 7 January 2024 11:43 > To: 'Stefan A. Goor'; mp4-tech@lists.mpegif.org > Subject: RE: [Mp4-tech] Microsoft MPEG-4 Reference Decoder > with packet loss > > > Hi, > MPEG-4 provides the tools for error resilience but the > designer has to implement/use the tools. Maybe the MS > Encoder/Decoder Reference Software does not include error > resilience functionality? > > Here at IndigoVision our hardware MPEG-4 Codec IP implements > Video packets with HEC and synchronization markers in the > encoder hardware. In the decoder we have error resync and > concealment in hardware and data partitioning and RVLC's in > software. This means our MPEG-4 Codec IP can operate over > lossy networks where packet loss is encountered with minimum > degradation of video quality to the user. > > The start of a frame in MPEG-4 is marked by the VOPStartCode > which has a 32 bit value of 0001b6. > > Hope that helps. > > Steve Wright > ASIC Manager > IndigoVision Limited > The Edinburgh Technopole > Bush Loan, Edinburgh > Scotland, UK > EH26 0PJ > +44 (0)131 475 7346 > +44 (0) 7780 633101 (mobile) > +44 (0)131 475 7201 (Fax) > http://www.indigovision.com/site/sections/products/mainstream.asp > > > > > > > > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stefan A. Goor > Sent: 06 January 2024 18:31 > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with > packet loss > > > Hey All, > Hopefully someone can help me with this. > I have used the MPEG4IP tools to create hinted mp4 files that > contain mpeg4 bitstreams created with the MS Encoder > Reference Software and I have placed these files on the > Darwin Streaming Server to allow RTSP access. When I write > the payload of the packets received by the RTSP client to a > file, I can decode it with the MS Reference Decoder. However > if I drop any packet, the decoder stops with a dialog box on > the screen that says "Debug Error!... ...abnormal program > termination..." and the decoder prints the following message > in the dos window: > > Assertion failed: iMbType >= 0 && iMbType <= 3, file > d:\ms_om\sys\decoder\mbheaddec.cpp, line 476 > > >From what I understand, the MPEG-4 decoder should be able to handle > >losses > and corruption (isn't one of the main goals of MPEG-4 to be > highly error resiliant?). Could anyone explain what the > problem may be and how I may get around it? I would like to > be able to decode content has been sent over a network and > that may have approximately 0.5% packet loss. Also, I assume > that each packet or at least an integer number of packets > corresponds to a single frame, is this true? > >From RFC 1889 for RTP, I see that there is a marker bit that > generally > indicates frame boundaries. In MPEG-1 and 2 there was a > specific code that determined the start of a frame, is there > something similar for mpeg4 video stream? Any help with these > problems and questions would be greatly apreciated, Many > thanks, Stefan > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-> tech > > Note: > Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From stefan.goor ucd.ie Wed Jan 7 11:44:41 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Wed Jan 7 07:14:33 2004 Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss In-Reply-To: <000b01c3d50b$163a1e50$12000a0a@PORTREE1> Message-ID: Hi, Thanks for replying. I looking into the encoder and decoder at the moment, to see if I need to specify some parameter for error resiliance or if it is even available with the reference software. As for the hardware codec, it looks great but unfortunately I need a core profile codec to support arbitrarily shaped video objects. Also, I tried to find the VOPStartCode that you mention in a file I encoded with the reference software but it wasn't contained anywhere it, so I'm wondering if there is a different code used by the microsoft codec? Thanks again for help, Stefan -----Original Message----- From: Steve Wright [mailto:s.wright@indigovision.com] Sent: 07 January 2024 10:43 To: 'Stefan A. Goor'; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss Hi, MPEG-4 provides the tools for error resilience but the designer has to implement/use the tools. Maybe the MS Encoder/Decoder Reference Software does not include error resilience functionality? Here at IndigoVision our hardware MPEG-4 Codec IP implements Video packets with HEC and synchronization markers in the encoder hardware. In the decoder we have error resync and concealment in hardware and data partitioning and RVLC's in software. This means our MPEG-4 Codec IP can operate over lossy networks where packet loss is encountered with minimum degradation of video quality to the user. The start of a frame in MPEG-4 is marked by the VOPStartCode which has a 32 bit value of 0001b6. Hope that helps. Steve Wright ASIC Manager IndigoVision Limited The Edinburgh Technopole Bush Loan, Edinburgh Scotland, UK EH26 0PJ +44 (0)131 475 7346 +44 (0) 7780 633101 (mobile) +44 (0)131 475 7201 (Fax) http://www.indigovision.com/site/sections/products/mainstream.asp -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stefan A. Goor Sent: 06 January 2024 18:31 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss Hey All, Hopefully someone can help me with this. I have used the MPEG4IP tools to create hinted mp4 files that contain mpeg4 bitstreams created with the MS Encoder Reference Software and I have placed these files on the Darwin Streaming Server to allow RTSP access. When I write the payload of the packets received by the RTSP client to a file, I can decode it with the MS Reference Decoder. However if I drop any packet, the decoder stops with a dialog box on the screen that says "Debug Error!... ...abnormal program termination..." and the decoder prints the following message in the dos window: Assertion failed: iMbType >= 0 && iMbType <= 3, file d:\ms_om\sys\decoder\mbheaddec.cpp, line 476 >From what I understand, the MPEG-4 decoder should be able to handle losses and corruption (isn't one of the main goals of MPEG-4 to be highly error resiliant?). Could anyone explain what the problem may be and how I may get around it? I would like to be able to decode content has been sent over a network and that may have approximately 0.5% packet loss. Also, I assume that each packet or at least an integer number of packets corresponds to a single frame, is this true? >From RFC 1889 for RTP, I see that there is a marker bit that generally indicates frame boundaries. In MPEG-1 and 2 there was a specific code that determined the start of a frame, is there something similar for mpeg4 video stream? Any help with these problems and questions would be greatly apreciated, Many thanks, Stefan _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From piyushk noida.interrasystems.com Wed Jan 7 19:01:57 2004 From: piyushk noida.interrasystems.com (Piyush Kaul) Date: Wed Jan 7 09:06:02 2004 Subject: [Mp4-tech] Slice partitions in H.264 Message-ID: <3FFC0A4D.25C1DCA3@noida.interrasystems.com> Hi, My query is about the slice partitioning of Macroblock residual data in B and C partitions. I couldn't find how the residual data is distributed among the partitions anywhere in the specs. Where can I find it? >From the reference source code, it looks like the Intra-coded macroblocks are assigned to partition B and Inter-coded to partition C. Is this right? Regards Piyush -------------- next part -------------- A non-text attachment was scrubbed... Name: piyushk.vcf Type: text/x-vcard Size: 321 bytes Desc: Card for Piyush Kaul Url : /pipermail/mp4-tech/attachments/20040107/e8a40ecb/piyushk.bin From srq ieee.org Wed Jan 7 10:10:48 2004 From: srq ieee.org (S. R. Quackenbush) Date: Wed Jan 7 10:16:25 2004 Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files In-Reply-To: <1073443572.9108.murphychen@mail2000.com.tw> Message-ID: Do you mean how may AAC raw data blocks in an Access Unit? If so, then the answer is one and only one, and everything else in your proposal is correct. Best, Schuyler --- Dr. Schuyler Quackenbush, Audio Research Labs 336 Park Ave, Suite 200, Scotch Plains, NJ 07076 office: 908 490 0700 srq@audioresearchlabs.com mobile: 908 612 9423 fax: 908 842 9151 www.audioresearchlabs.com > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Murphy Chen > Sent: Tuesday, January 06, 2024 9:46 PM > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files > > > Dear All, > > How many AAC raw data blocks are contained in an audio sample? > The specification seems not have specified this? > My idea is that if we can make sure only one raw data block is > contained in an audio sample, > an ADTS stream can be generated via adding frame header to each > audio sample if PCE is not existed. > And if PCE exists, an ADIF stream can be generated via generating > an ADIF header, followed by audio samples. > In this way, the AAC decoder originally designed for accepting > ADIF and ADTS formats can still be used > for MPEG-4 files without any modification. > > Best Regards, > Murphy > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From stefan.goor ucd.ie Wed Jan 7 16:53:32 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Wed Jan 7 12:11:10 2004 Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss In-Reply-To: <000701c3d50e$713ac040$0000fea9@corp.intertrust.com> Message-ID: Ah I see, I just made the sweeping assumption that the reference software would have some of the resiliance techniques as I thought that they standardised as well. I understand more clearly now. Just as a side note, I need to examine it more closely, but I found some encoding parameters that may relate to error resilance. So I'm going to try and use these parameters and I will post the result either positive or negative when I have it, Regards, Stefan -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Rob Koenen (MPEGIF) Sent: 07 January 2024 11:07 To: s.wright@indigovision.com; 'Stefan A. Goor'; mp4-tech@lists.mpegif.org Subject: RE: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with packet loss That's right. The syntax of MPEG-4 allows you to write error-resilient decoders using the tools Steve is referring to. How you do build such decoders is not specified in the standard - it's an area where vendors can (and do) compete. Some decoders do not include any error robustness processing, and may indeed fail when confronted with errors. Best, Rob > -----Original Message----- > From: Steve Wright [mailto:s.wright@indigovision.com] > Sent: Wednesday, 7 January 2024 11:43 > To: 'Stefan A. Goor'; mp4-tech@lists.mpegif.org > Subject: RE: [Mp4-tech] Microsoft MPEG-4 Reference Decoder > with packet loss > > > Hi, > MPEG-4 provides the tools for error resilience but the > designer has to implement/use the tools. Maybe the MS > Encoder/Decoder Reference Software does not include error > resilience functionality? > > Here at IndigoVision our hardware MPEG-4 Codec IP implements > Video packets with HEC and synchronization markers in the > encoder hardware. In the decoder we have error resync and > concealment in hardware and data partitioning and RVLC's in > software. This means our MPEG-4 Codec IP can operate over > lossy networks where packet loss is encountered with minimum > degradation of video quality to the user. > > The start of a frame in MPEG-4 is marked by the VOPStartCode > which has a 32 bit value of 0001b6. > > Hope that helps. > > Steve Wright > ASIC Manager > IndigoVision Limited > The Edinburgh Technopole > Bush Loan, Edinburgh > Scotland, UK > EH26 0PJ > +44 (0)131 475 7346 > +44 (0) 7780 633101 (mobile) > +44 (0)131 475 7201 (Fax) > http://www.indigovision.com/site/sections/products/mainstream.asp > > > > > > > > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stefan A. Goor > Sent: 06 January 2024 18:31 > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] Microsoft MPEG-4 Reference Decoder with > packet loss > > > Hey All, > Hopefully someone can help me with this. > I have used the MPEG4IP tools to create hinted mp4 files that > contain mpeg4 bitstreams created with the MS Encoder > Reference Software and I have placed these files on the > Darwin Streaming Server to allow RTSP access. When I write > the payload of the packets received by the RTSP client to a > file, I can decode it with the MS Reference Decoder. However > if I drop any packet, the decoder stops with a dialog box on > the screen that says "Debug Error!... ...abnormal program > termination..." and the decoder prints the following message > in the dos window: > > Assertion failed: iMbType >= 0 && iMbType <= 3, file > d:\ms_om\sys\decoder\mbheaddec.cpp, line 476 > > >From what I understand, the MPEG-4 decoder should be able to handle > >losses > and corruption (isn't one of the main goals of MPEG-4 to be > highly error resiliant?). Could anyone explain what the > problem may be and how I may get around it? I would like to > be able to decode content has been sent over a network and > that may have approximately 0.5% packet loss. Also, I assume > that each packet or at least an integer number of packets > corresponds to a single frame, is this true? > >From RFC 1889 for RTP, I see that there is a marker bit that > generally > indicates frame boundaries. In MPEG-1 and 2 there was a > specific code that determined the start of a frame, is there > something similar for mpeg4 video stream? Any help with these > problems and questions would be greatly apreciated, Many > thanks, Stefan > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-> tech > > Note: > Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From ralph.sperschneider iis.fraunhofer.de Thu Jan 8 17:32:36 2004 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Thu Jan 8 11:47:51 2004 Subject: [Mp4-tech] Re: raw data blocks v.s. audio sample in MPEG-4 files In-Reply-To: References: Message-ID: <3FFD8624.3060802@iis.fraunhofer.de> S. R. Quackenbush wrote: > Do you mean how may AAC raw data blocks in an Access Unit? If so, then the > answer is one and only one, and everything else in your proposal is correct. ... assuming that the decoder in question is an MPEG-4 AAC decoder (i.e. it supports at least PNS). And of course you can do this only for AOT 1, 2 and 3 (and AOT 4 if your decoder furthermore supports LTP). Ralph > > Best, > Schuyler > --- > Dr. Schuyler Quackenbush, Audio Research Labs > 336 Park Ave, Suite 200, Scotch Plains, NJ 07076 > office: 908 490 0700 srq@audioresearchlabs.com > mobile: 908 612 9423 > fax: 908 842 9151 www.audioresearchlabs.com > > > > >>-----Original Message----- >>From: mp4-tech-bounces@lists.mpegif.org >>[mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Murphy Chen >>Sent: Tuesday, January 06, 2024 9:46 PM >>To: mp4-tech@lists.mpegif.org >>Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files >> >> >>Dear All, >> >>How many AAC raw data blocks are contained in an audio sample? >>The specification seems not have specified this? >>My idea is that if we can make sure only one raw data block is >>contained in an audio sample, >>an ADTS stream can be generated via adding frame header to each >>audio sample if PCE is not existed. >>And if PCE exists, an ADIF stream can be generated via generating >>an ADIF header, followed by audio samples. >>In this way, the AAC decoder originally designed for accepting >>ADIF and ADTS formats can still be used >>for MPEG-4 files without any modification. >> >>Best Regards, >>Murphy >> >>_______________________________________________ >>Mp4-tech mailing list >>Mp4-tech@lists.mpegif.org >>http://lists.mpegif.org/mailman/listinfo/mp4-tech >> >>Note: Conduct on the mailing list is subject to the Antitrust >>guidelines found at > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 FhG IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From rkothari_iit rediffmail.com Thu Jan 8 17:30:37 2004 From: rkothari_iit rediffmail.com (rakesh kothari) Date: Thu Jan 8 12:49:44 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc Message-ID: <20040108172955.915.qmail@mailweb33.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040108/b2b7a1fc/attachment.html -------------- next part -------------- hi, I would be very thankful if anyone could give me pointers regarding mpeg-4 player (which can play .mp4 files) for pocket PC. I have searched a lot for it with no results. Platform 4 player is giving me problems while trying to play streamed .mp4 files in my pocket PC. Thanks a lot in advance. Regards, Rakesh Kothari From subhac cal.interrasystems.com Thu Jan 8 14:07:33 2004 From: subhac cal.interrasystems.com (Subhadeep Chatterjee) Date: Thu Jan 8 12:50:30 2004 Subject: [Mp4-tech] problem in decoding S(GMC)VOP with zero warping points References: <200401071712.i07HBZoZ014909@lists1.magma.ca> Message-ID: <3FFD16CD.2A255A4@cal.interrasystems.com> Hi everyone, I am engaged in developing an MPEG4 visual decoder. I am faced with a problem in case of decoding S(GMC)VOP with no_of_sprite_warping_points = 0. There is a bug in my code which is present in the momusys reference code also. But the microsoft decoder decodes the frame properly. Can any one please tell me where is the difference in the microsoft reference decoder and the momusys decoder in case of decoding S(GMC)VOP with no_of_sprite_warping_points = 0 ? It will be of great help to me if anyone can point out the bug in the momusys decoder in this respect. Thanks and regards Subhadeep From stefan.goor ucd.ie Thu Jan 8 18:01:32 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Thu Jan 8 13:06:23 2004 Subject: [Mp4-tech] MoMuSys Message-ID: Hey Again, Just wondering if anyone has any experience using the MoMuSys Codec for error resilant coding and data partitioning. I find that the decoder crashes whenever I set the error resiliance bit in the decoding .ctl file. If anyone has any suggestions or if anyone has any configuration files that worked for Error Resiliance and / or Data Partitioning, I'd be very grateful, Thanks, Stef From Wesley.DeNeve ugent.be Thu Jan 8 19:11:53 2004 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Thu Jan 8 13:15:50 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc References: <20040108172955.915.qmail@mailweb33.rediffmail.com> Message-ID: <006c01c3d612$e5cabb90$614ff151@dune> Hi, rakesh kothari wrote: > hi, > > I would be very thankful if anyone could give me pointers regarding > mpeg-4 player (which can play .mp4 files) for pocket PC. I have > searched a lot for it with no results. Platform 4 player is giving me > problems while trying to play streamed .mp4 files in my pocket PC. you could also have a look at the GPAC project (and perhaps at the capabilities of their libm4isomedia library): http://gpac.sourceforge.net http://www.comelec.enst.fr/osmo4/ Kind regards, Wesley -- Ghent University ELIS / Multimedia Lab From dsearles mmc.atmel.com Thu Jan 8 14:08:16 2004 From: dsearles mmc.atmel.com (Dan Searles) Date: Thu Jan 8 14:15:51 2004 Subject: [Mp4-tech] MoMuSys Message-ID: <3FFDAAA0.5070503@mmc.atmel.com> Its not going to help much, but, yes, there are numerous bugs in the reference software (Momusys has more than MS, though). I, and I'm sure others have made redundant fixes, so my plea would be to the MPEG4 standards folks for any info on this topic. Are fixed decoders in the works? Dan Searles --------------------------------------- Atmel Multimedia & Communications 3800 Gateway Centre, Suite 311 Morrisville, NC 27560 phone: (919)462-6553 fax: (919)462-0300 --------------------------------------- Stefan A. Goor wrote: > Hey Again, > Just wondering if anyone has any experience using the MoMuSys Codec for > error resilant coding and data partitioning. I find that the decoder > crashes whenever I set the error resiliance bit in the decoding .ctl > file. > If anyone has any suggestions or if anyone has any configuration files > that > worked for Error Resiliance and / or Data Partitioning, I'd be very > grateful, > Thanks, > Stef > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > > > From blackbirduw hotmail.com Thu Jan 8 17:29:09 2004 From: blackbirduw hotmail.com (Bird Black) Date: Thu Jan 8 17:39:33 2004 Subject: [Mp4-tech] reference software for standard 14496 - 2 Message-ID: Hi, Could anyone tell me where I can find a reference software for standard 14496-2 ? Thanks in advancd. Best regards, Hai _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca From murphychen mail2000.com.tw Fri Jan 9 11:41:28 2004 From: murphychen mail2000.com.tw (Murphy Chen) Date: Thu Jan 8 22:57:21 2004 Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files Message-ID: <1073619688.13784.murphychen@mail2000.com.tw> Yes, that's exactly what I mean. I'd like to make sure where in the specification, the rule is stated. Thank you for your responce. :) Best Regards, Murphy -----Original message----- From:S. R. Quackenbush To:murphychen@mail2000.com.tw,mp4-tech@lists.mpegif.org Date:Wed, 7 Jan 2024 10:10:48 -0500 Subject:RE: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files Do you mean how may AAC raw data blocks in an Access Unit? If so, then the answer is one and only one, and everything else in your proposal is correct. Best, Schuyler --- Dr. Schuyler Quackenbush, Audio Research Labs 336 Park Ave, Suite 200, Scotch Plains, NJ 07076 office: 908 490 0700 srq@audioresearchlabs.com mobile: 908 612 9423 fax: 908 842 9151 www.audioresearchlabs.com > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Murphy Chen > Sent: Tuesday, January 06, 2024 9:46 PM > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files > > > Dear All, > > How many AAC raw data blocks are contained in an audio sample? > The specification seems not have specified this? > My idea is that if we can make sure only one raw data block is > contained in an audio sample, > an ADTS stream can be generated via adding frame header to each > audio sample if PCE is not existed. > And if PCE exists, an ADIF stream can be generated via generating > an ADIF header, followed by audio samples. > In this way, the AAC decoder originally designed for accepting > ADIF and ADTS formats can still be used > for MPEG-4 files without any modification. > > Best Regards, > Murphy > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at From johnlam fujitsu-hkdc.com Fri Jan 9 12:16:17 2004 From: johnlam fujitsu-hkdc.com (John Lam) Date: Thu Jan 8 22:58:30 2004 Subject: [Mp4-tech] Can I use PCM or ADPCM as audio stream of .mp4 file? Message-ID: <3FFE2B11.A92FA540@fujitsu-hkdc.com> Hi all, I'm now working on construct .mp4 file with both visual and audio stream. Can audio stream data be non-compressed PCM (16 bits) or IMA ADPCM (4 bits) data? If so, how to fill the whole 'trak' atom and its sub-atom such as 'hdlr'? If not, what file format should I use for packing MPEG4 visual stream simple profile confirmed to ISO/IEC 14496-2 and audio stream is either non-compressed PCM or IMA ADPCM together? Thank you for your help! -- Best Regards, John Lam From murphychen mail2000.com.tw Fri Jan 9 13:38:52 2004 From: murphychen mail2000.com.tw (Murphy Chen) Date: Fri Jan 9 00:45:41 2004 Subject: [Mp4-tech] AMR codec (ETSI and 3GPP version) Message-ID: <1073626732.56043.murphychen@mail2000.com.tw> ETSI has a version of AMR codec. 3GPP also has a version of AMR codec for both fix-point and floating-point. >From the document writing style, it seems that 3GPP version is derived from ETSI version, and is more modularized. But I wonder: Which one is more standard compliant? And which one is more efficient? Thanks, Murphy From s.voukelatos indigovision.com Fri Jan 9 09:13:13 2004 From: s.voukelatos indigovision.com (Stathis Voukelatos) Date: Fri Jan 9 04:29:49 2004 Subject: [Mp4-tech] MoMuSys Message-ID: <67336BF4D5D23C4AA30EC72DFCFCA6DF94B030@peebles.indigovision.com> The bit in the decoder .ctl file that you are talking about is actually an error resilience DISABLE flag. So, if your stream makes use of error resilience tools then you should set it to 0, otherwise the decoder does not expect to encounter video packet headers and the stream is not parsed properly. >From my experience the MomuSys decoder has no problem handling error resilience tools, if the .ctl file is set up properly. Hope this helps, Stathis Stathis Voukelatos, PhD Software Engineer IndigoVision Ltd The Edinburgh Technopole Bush Loan, Edinburgh Scotland, UK EH26 0PJ +44 (0)131 4757345 +44 (0)131 4757201 (Fax) http://www.indigovision.com > -----Original Message----- > From: Stefan A. Goor [mailto:stefan.goor@ucd.ie] > Sent: Thursday, January 08, 2024 6:02 PM > To: Mp4-Tech > Subject: [Mp4-tech] MoMuSys > > > Hey Again, > Just wondering if anyone has any experience using the MoMuSys > Codec for > error resilant coding and data partitioning. I find that the decoder > crashes whenever I set the error resiliance bit in the > decoding .ctl file. > If anyone has any suggestions or if anyone has any > configuration files that > worked for Error Resiliance and / or Data Partitioning, I'd be very > grateful, > Thanks, > Stef > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti > trust.php > From stefan.goor ucd.ie Fri Jan 9 11:09:38 2004 From: stefan.goor ucd.ie (Stefan A. Goor) Date: Fri Jan 9 06:20:52 2004 Subject: [Mp4-tech] MoMuSys In-Reply-To: <67336BF4D5D23C4AA30EC72DFCFCA6DF94B030@peebles.indigovision.com> Message-ID: Thanks for that Stathis, but unfortunately it is when the bit is set to 0 that the decoder fails. I had noticed that the bit was 0 for enable and 1 for disable because I have some files that describe every parameter and their options (in the resul folder of the reference software). I guess if you have managed to use the decoder for error resiliant encoded video that you may have some relevant '.cfg' and '.ctl' files for the encoder and decoder. Would it possible to a copy of some of these files that you successfully used for encoding and decoding error resiliant video? If you could it may help me determine if the problem is the codec I am working with rather than the configurations, Many thanks, Stefan -----Original Message----- From: mp4-tech-bounces@lists.mpegif.org [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stathis Voukelatos Sent: 09 January 2024 09:13 To: Mp4-Tech Subject: RE: [Mp4-tech] MoMuSys The bit in the decoder .ctl file that you are talking about is actually an error resilience DISABLE flag. So, if your stream makes use of error resilience tools then you should set it to 0, otherwise the decoder does not expect to encounter video packet headers and the stream is not parsed properly. >From my experience the MomuSys decoder has no problem handling error resilience tools, if the .ctl file is set up properly. Hope this helps, Stathis Stathis Voukelatos, PhD Software Engineer IndigoVision Ltd The Edinburgh Technopole Bush Loan, Edinburgh Scotland, UK EH26 0PJ +44 (0)131 4757345 +44 (0)131 4757201 (Fax) http://www.indigovision.com > -----Original Message----- > From: Stefan A. Goor [mailto:stefan.goor@ucd.ie] > Sent: Thursday, January 08, 2024 6:02 PM > To: Mp4-Tech > Subject: [Mp4-tech] MoMuSys > > > Hey Again, > Just wondering if anyone has any experience using the MoMuSys > Codec for > error resilant coding and data partitioning. I find that the decoder > crashes whenever I set the error resiliance bit in the > decoding .ctl file. > If anyone has any suggestions or if anyone has any > configuration files that > worked for Error Resiliance and / or Data Partitioning, I'd be very > grateful, > Thanks, > Stef > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti > trust.php > _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From michael.ditze c-lab.de Fri Jan 9 14:18:42 2004 From: michael.ditze c-lab.de (Michael Ditze) Date: Fri Jan 9 08:29:29 2004 Subject: [Mp4-tech] MPEG-4 Natural Video Elementary Stream packet sizes In-Reply-To: Message-ID: <00b101c3d6b3$1a2a0f80$a751ea83@clab.de> Hi there, I like to do a simulation on transmitting MPEG-4 traffic over wireless networks using the 802.11e standard with the NS-2 network simulator. Therefore I need real values of MPEG-4 Elementary Stream natural video packet and frame (VOP) sizes. Especially, I will need to know which sizes I-VOPS, B- and P-VOPs may exhibit. Does anyone know here I can get such values or has anyone done similar experiments and can make these values available to me? Regards, Michael Michael Ditze C-LAB, 33094 Paderborn, Germany F?rstenallee 11, Office FU 304 Voice: +49-5251-60-6124, Fax: +49-5251-60-6065 Email: mailto:michael.ditze@c-lab.de From ralph.sperschneider iis.fraunhofer.de Fri Jan 9 14:23:14 2004 From: ralph.sperschneider iis.fraunhofer.de (Ralph Sperschneider) Date: Fri Jan 9 08:29:41 2004 Subject: [Mp4-tech] Re: raw data blocks v.s. audio sample in MPEG-4 files In-Reply-To: <1073619688.13784.murphychen@mail2000.com.tw> References: <1073619688.13784.murphychen@mail2000.com.tw> Message-ID: <3FFEAB42.3030403@iis.fraunhofer.de> Murphy Chen wrote: > Yes, that's exactly what I mean. > I'd like to make sure where in the specification, the rule is stated. ISO/IEC 14496-3:2001/Cor.1:2002: 1.6.2.2.2.1 AAC Main, AAC LC, AAC SSR, AAC LTP One top level payload (raw_data_block()) is mapped into one access unit. Subsequent access units form one elementary stream. Regards, Ralph > > Thank you for your responce. :) > > Best Regards, > Murphy > > -----Original message----- > From:S. R. Quackenbush > To:murphychen@mail2000.com.tw,mp4-tech@lists.mpegif.org > Date:Wed, 7 Jan 2024 10:10:48 -0500 > Subject:RE: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files > > Do you mean how may AAC raw data blocks in an Access Unit? If so, then the > answer is one and only one, and everything else in your proposal is correct. > > Best, > Schuyler > --- > Dr. Schuyler Quackenbush, Audio Research Labs > 336 Park Ave, Suite 200, Scotch Plains, NJ 07076 > office: 908 490 0700 srq@audioresearchlabs.com > mobile: 908 612 9423 > fax: 908 842 9151 www.audioresearchlabs.com > > > > >>-----Original Message----- >>From: mp4-tech-bounces@lists.mpegif.org >>[mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Murphy Chen >>Sent: Tuesday, January 06, 2024 9:46 PM >>To: mp4-tech@lists.mpegif.org >>Subject: [Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files >> >> >>Dear All, >> >>How many AAC raw data blocks are contained in an audio sample? >>The specification seems not have specified this? >>My idea is that if we can make sure only one raw data block is >>contained in an audio sample, >>an ADTS stream can be generated via adding frame header to each >>audio sample if PCE is not existed. >>And if PCE exists, an ADIF stream can be generated via generating >>an ADIF header, followed by audio samples. >>In this way, the AAC decoder originally designed for accepting >>ADIF and ADTS formats can still be used >>for MPEG-4 files without any modification. >> >>Best Regards, >>Murphy >> >>_______________________________________________ >>Mp4-tech mailing list >>Mp4-tech@lists.mpegif.org >>http://lists.mpegif.org/mailman/listinfo/mp4-tech >> >>Note: Conduct on the mailing list is subject to the Antitrust >>guidelines found at > > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -- Dipl.-Ing. Ralph Sperschneider | Phone: +49 9131 776 344 FhG IIS | Fax: +49 9131 776 398 Am Wolfsmantel 33 | mailto:ralph.sperschneider@iis.fraunhofer.de D 91058 Erlangen | http://www.iis.fhg.de/amm/ From brail mcst.ru Fri Jan 9 17:33:58 2004 From: brail mcst.ru (Ilya V. Brailovsky) Date: Fri Jan 9 09:42:04 2004 Subject: [Mp4-tech] MoMuSys References: Message-ID: <3FFEBBD6.5614F84C@mcst.ru> Hi Stefan, Try "ER-01-L1.cmp" from ftp://ftp.tnt.uni-hannover.de/pub/MPEG/video/conformance/version_2/ with number of VOs and layers both equal to 1, Err. resilience = 0, width = 352, height = 288, post-filter = 0, bpp = 8, random_access_start_time = "Number of VTCs" = 0. Good luck! -Ilya "Stefan A. Goor" wrote: > Thanks for that Stathis, but unfortunately it is when the bit is set to 0 > that the decoder fails. I had noticed that the bit was 0 for enable and 1 > for disable because I have some files that describe every parameter and > their options (in the resul folder of the reference software). > I guess if you have managed to use the decoder for error resiliant encoded > video that you may have some relevant '.cfg' and '.ctl' files for the > encoder and decoder. Would it possible to a copy of some of these files > that you successfully used for encoding and decoding error resiliant video? > If you could it may help me determine if the problem is the codec I am > working with rather than the configurations, > Many thanks, > Stefan > > -----Original Message----- > From: mp4-tech-bounces@lists.mpegif.org > [mailto:mp4-tech-bounces@lists.mpegif.org]On Behalf Of Stathis > Voukelatos > Sent: 09 January 2024 09:13 > To: Mp4-Tech > Subject: RE: [Mp4-tech] MoMuSys > > The bit in the decoder .ctl file that you are talking about is actually > an error resilience DISABLE flag. So, if your stream makes use of > error resilience tools then you should set it to 0, otherwise the > decoder does not expect to encounter video packet headers and the stream > is not parsed properly. > > >From my experience the MomuSys decoder has no problem handling error > resilience tools, if the .ctl file is set up properly. > > Hope this helps, > Stathis > > Stathis Voukelatos, PhD > Software Engineer > IndigoVision Ltd > The Edinburgh Technopole > Bush Loan, Edinburgh > Scotland, UK > EH26 0PJ > +44 (0)131 4757345 > +44 (0)131 4757201 (Fax) > http://www.indigovision.com > > > -----Original Message----- > > From: Stefan A. Goor [mailto:stefan.goor@ucd.ie] > > Sent: Thursday, January 08, 2024 6:02 PM > > To: Mp4-Tech > > Subject: [Mp4-tech] MoMuSys > > > > > > Hey Again, > > Just wondering if anyone has any experience using the MoMuSys > > Codec for > > error resilant coding and data partitioning. I find that the decoder > > crashes whenever I set the error resiliance bit in the > > decoding .ctl file. > > If anyone has any suggestions or if anyone has any > > configuration files that > > worked for Error Resiliance and / or Data Partitioning, I'd be very > > grateful, > > Thanks, > > Stef > > > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > Note: Conduct on the mailing list is subject to the Antitrust > > guidelines found at > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti > > trust.php > > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust guidelines > found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From rob.koenen mpegif.org Fri Jan 9 13:55:34 2004 From: rob.koenen mpegif.org (Rob Koenen (MPEGIF)) Date: Fri Jan 9 17:11:46 2004 Subject: [Mp4-tech] reference software for standard 14496 - 2 In-Reply-To: Message-ID: <001a01c3d6fb$58700ea0$0fc3ea18@corp.intertrust.com> all relevant links are on the Resources pages of www.m4if.org Check out "Obtaining the Standard" Rob > -----Original Message----- > From: Bird Black [mailto:blackbirduw@hotmail.com] > Sent: Thursday, 8 January 2024 14:29 > To: mp4-tech@lists.mpegif.org > Subject: [Mp4-tech] reference software for standard 14496 - 2 > > > Hi, > > Could anyone tell me where I can find a reference software > for standard > 14496-2 ? > > Thanks in advancd. > > Best regards, > Hai > > _________________________________________________________________ > MSN 8 with e-mail virus protection service: 2 months FREE* > http://join.msn.com/?page=features/virus&pgmarket=en-ca&RU=htt > p%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgma > rket%3den-ca > > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-> tech > > Note: > Conduct on the mailing list is subject to the > Antitrust guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042-Anti trust.php From sunto.lee 163.com Fri Jan 9 16:59:05 2004 From: sunto.lee 163.com (Sunto Lee) Date: Fri Jan 9 17:27:26 2004 Subject: [Mp4-tech] reference software for standard 14496 - 2 Message-ID: <200401090859.i098xBFc024735@lists1.magma.ca> Hi Hai, You can download it from the ITTF website as below: http://isotc.iso.ch/livelink/livelink/fetch/2000/2489/Ittf_Home/ITTF.htm May it help me. Sunto >Hi, > >Could anyone tell me where I can find a reference software for standard >14496-2 ? > >Thanks in advancd. > >Best regards, >Hai > >_________________________________________________________________ >MSN 8 with e-mail virus protection service: 2 months FREE* >http://join.msn.com/?page=features/virus&pgmarket=en-ca&RU=http3a2f2fjoin.msn.com2f3fpage3dmisc2fspecialoffers26pgmarket3den-ca > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From rkothari_iit rediffmail.com Fri Jan 9 21:06:36 2004 From: rkothari_iit rediffmail.com (rakesh kothari) Date: Fri Jan 9 17:29:32 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc Message-ID: <20040109210545.14367.qmail@webmail25.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040109/d043072a/attachment.html -------------- next part -------------- hi, I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 player it seems doesn't recgnises rtsp protocol. Osmo4 also has problem with audio encoded with faac. Can anbody help me with this regard? Can we make osmo4 compatible for streaming mpeg4, or is there any other player for Pocket PC with which we can do that? Thanks for your help. Regards, Rakesh Kothari On Thu, 08 Jan 2024 Wesley De Neve wrote : >Hi, > >rakesh kothari wrote: > > hi, > > > > I would be very thankful if anyone could give me pointers regarding > > mpeg-4 player (which can play .mp4 files) for pocket PC. I have > > searched a lot for it with no results. Platform 4 player is giving me > > problems while trying to play streamed .mp4 files in my pocket PC. > >you could also have a look at the GPAC project (and perhaps at the >capabilities of their libm4isomedia library): > >http://gpac.sourceforge.net >http://www.comelec.enst.fr/osmo4/ > >Kind regards, >Wesley > >-- >Ghent University >ELIS / Multimedia Lab > > From hans-juergen.bardenhagen arcor.de Fri Jan 9 23:57:39 2004 From: hans-juergen.bardenhagen arcor.de (Hans-Juergen Bardenhagen) Date: Fri Jan 9 19:08:38 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc In-Reply-To: <20040109210545.14367.qmail@webmail25.rediffmail.com> Message-ID: <90$WIu-zTuB@id-50271.news.dfncis.de> Hi Rakesh, on 09.01.04, 21:05 local time (received 09.01.04, 23:50 GMT+1) you wrote: > I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 > player it seems doesn't recgnises rtsp protocol. As far as I know, at least the Osmo4/GPAC version should be able to play RTSP streams like the mp4player from the MPEG4IP project. You have to enter the URL directly in the appropriate player menu of course ("open file"). And you should not use the older Osmo4/ENST version anymore. Playback problems with MP4 streams can have several reasons, too. > Osmo4 also has problem with audio encoded with faac. Can anbody help > me with this regard? You have to compile their AAC plugin based on FAAD2 first, because GPAC does not support AAC playback out of the box due to license reasons. There is a short guide how to do this in the GPAC help forum on SourceForge.net in the thread "Welcome to GPAC". ZZee ya, Hans-J?rgen From concolat enst.fr Sat Jan 10 19:56:32 2004 From: concolat enst.fr (concolat@enst.fr) Date: Sat Jan 10 15:53:25 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc In-Reply-To: <90$WIu-zTuB@id-50271.news.dfncis.de> References: <20040109210545.14367.qmail@webmail25.rediffmail.com> <90$WIu-zTuB@id-50271.news.dfncis.de> Message-ID: <2397.80.170.7.67.1073760992.squirrel@www.comelec.enst.fr> Hi Rakesh, >> I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 >> player it seems doesn't recgnises rtsp protocol. Be careful that they are two versions of Osmo4. One version is based on the MPEG-4 reference software called Osmo4-IM1. It is not maintained anymore and it misses a lot of features (namely RTSP). The other version called Osmo4-GPAC, a.k.a. Osmo4, was written from scrach using C ANSI. It has many features (RTSP ...), bug fixes ... and is still maintained. Sources, Developments, News, Forums are available on gpac.sourceforge.net. As for AAC, Osmo4 implements AAC and was tested with FAAC. Binaries are not distributed because of licensing issues, you can get the source code on the sourceforge site. Please make sure to download the latest version of the code and if you still have problems, let us know on the GPAC Project forums. Best regards, Cyril Concolato From bfelts envivio.com Sat Jan 10 13:42:15 2004 From: bfelts envivio.com (bfelts@envivio.com) Date: Sat Jan 10 16:54:53 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc In-Reply-To: <20040109210545.14367.qmail@webmail25.rediffmail.com> References: <20040109210545.14367.qmail@webmail25.rediffmail.com> Message-ID: <1073770935.400071b7ee8ed@email.envivio.com> Envivio has a PPC player which supports streaming, AAC audio, ASP video, Advanced2D graphics. You can contact us to get an evaluation copy. Boris Felts Envivio > > hi, > > > > I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 player it > seems doesn't recgnises rtsp protocol. Osmo4 also has problem with audio > encoded with faac. Can anbody help me with this regard? Can we make osmo4 > compatible for streaming mpeg4, or is there any other player for Pocket PC > with which we can do that? > > > > Thanks for your help. > > > > Regards, > > Rakesh Kothari > > > > On Thu, 08 Jan 2024 Wesley De Neve wrote : > > >Hi, > > > > > >rakesh kothari wrote: > > > > hi, > > > > > > > > I would be very thankful if anyone could give me pointers regarding > > > > mpeg-4 player (which can play .mp4 files) for pocket PC. I have > > > > searched a lot for it with no results. Platform 4 player is giving me > > > > problems while trying to play streamed .mp4 files in my pocket PC. > > > > > >you could also have a look at the GPAC project (and perhaps at the > > >capabilities of their libm4isomedia library): > > > > > >http://gpac.sourceforge.net > > >http://www.comelec.enst.fr/osmo4/ > > > > > >Kind regards, > > >Wesley > > > > > >-- > > >Ghent University > > >ELIS / Multimedia Lab > > > > > > > > > > > > > > ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/ From azaka abo.fi Sun Jan 11 16:37:40 2004 From: azaka abo.fi (azaka@abo.fi) Date: Sun Jan 11 09:59:35 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc In-Reply-To: <1073770935.400071b7ee8ed@email.envivio.com> References: <20040109210545.14367.qmail@webmail25.rediffmail.com> <1073770935.400071b7ee8ed@email.envivio.com> Message-ID: <1073831860.40015fb4de2cc@webmail.abo.fi> Hi, I need DivX Source code. Do u guys have a link containing Source Code of DivX. Asim. Quoting bfelts@envivio.com: > Envivio has a PPC player which supports streaming, AAC audio, ASP > video, > Advanced2D graphics. > You can contact us to get an evaluation copy. > > Boris Felts > Envivio > > > > > hi, > > > > > > > > I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 > player it > > seems doesn't recgnises rtsp protocol. Osmo4 also has problem with > audio > > encoded with faac. Can anbody help me with this regard? Can we make > osmo4 > > compatible for streaming mpeg4, or is there any other player for > Pocket PC > > with which we can do that? > > > > > > > > Thanks for your help. > > > > > > > > Regards, > > > > Rakesh Kothari > > > > > > > > On Thu, 08 Jan 2024 Wesley De Neve wrote : > > > > >Hi, > > > > > > > > > >rakesh kothari wrote: > > > > > > hi, > > > > > > > > > > > > I would be very thankful if anyone could give me pointers > regarding > > > > > > mpeg-4 player (which can play .mp4 files) for pocket PC. I > have > > > > > > searched a lot for it with no results. Platform 4 player is > giving me > > > > > > problems while trying to play streamed .mp4 files in my pocket > PC. > > > > > > > > > >you could also have a look at the GPAC project (and perhaps at > the > > > > >capabilities of their libm4isomedia library): > > > > > > > > > >http://gpac.sourceforge.net > > > > >http://www.comelec.enst.fr/osmo4/ > > > > > > > > > >Kind regards, > > > > >Wesley > > > > > > > > > >-- > > > > >Ghent University > > > > >ELIS / Multimedia Lab > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------- > This mail sent through IMP: http://horde.org/imp/ > _______________________________________________ > Mp4-tech mailing list > Mp4-tech@lists.mpegif.org > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > Note: Conduct on the mailing list is subject to the Antitrust > guidelines found at > http://www.mpegif.org/public/documents/vault/mp-out-30042- Antitrust.php > From Wesley.DeNeve ugent.be Sun Jan 11 18:11:08 2004 From: Wesley.DeNeve ugent.be (Wesley De Neve) Date: Sun Jan 11 12:26:07 2004 Subject: [OT] Re: Re: [Mp4-tech] mpeg4 player for pocket pc References: <20040109210545.14367.qmail@webmail25.rediffmail.com><1073770935.400071b7ee8ed@email.envivio.com> <1073831860.40015fb4de2cc@webmail.abo.fi> Message-ID: <019201c3d865$e7f81e80$ac5388d9@dune> Hi Asim, azaka@abo.fi wrote: > Hi, > > I need DivX Source code. Do u guys have a link containing Source Code > of DivX. The source code of the DivX codec is not in the public domain, but they do have an SDK for detailed coder control (next to VCM and DirectShow based control). If you're really eager to have a look at the source code of an MPEG-4 compressor, then I would recommend to have a look at the MPEG-4 Visual reference software package or at the XviD project (both being used in the MPEG4IP project). HTH, Wesley From johnlam fujitsu-hkdc.com Mon Jan 12 11:26:00 2004 From: johnlam fujitsu-hkdc.com (John Lam) Date: Sun Jan 11 22:12:07 2004 Subject: [Mp4-tech] "blocky" shown while playing .mp4 file Message-ID: <400213C8.A687B7A8@fujitsu-hkdc.com> Hi all, I've mpeg4 visual stream conformed to ISO/IEC 14496-2 simple profile, its resolution is QVGA and bit rate is about 950kbps. I constructed .mp4 file header for this visual stream, then I can play it using QuickTime 6.3 and RealOne player. However, I find that there is "blocky" effect for some instances while playing it in both QuickTime and RealOne player. I wonder if it is caused by my out-dated computer configuration or something else. Does anyone has clue on it? I can send the file to you to view the actual "blocky" effect. Does anyone know what is the computer configuration requirement for playing such visual stream by QuickTime or RealOne player? Thank you! My computer config: 1. Pentium III 500MHz 2. 128MB SDRAM 3. SCSI hard disk with 150MB free space. -- Best Regards, John Lam From paragchaurasia rediffmail.com Mon Jan 12 05:02:26 2004 From: paragchaurasia rediffmail.com (Parag Chaurasia) Date: Mon Jan 12 00:12:33 2004 Subject: [Mp4-tech] "blocky" shown while playing .mp4 file Message-ID: <20040112050119.17496.qmail@webmail27.rediffmail.com> An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040112/fc007fea/attachment.html -------------- next part -------------- Hi John, There could be a variety of reasons for this: (1) In MPEG-4 Simple Profile, the max bit rate that a decoder is required to support is 384 kbps. 950 kbps is too high a value, and it's diffucult to say how the MPEG-4 decoder used in QuickTime 6.3 Player or RealOne Player will react. (2) Blockiness may also result if the Rate Control Algorithm used in that MPEG-4 Encoder is not up to the mark for some particular cases, like in this instance, 950 kbps and QVGA encoding. (3) Your PC Specifications, as far as Processor Speed is concerned, are at a lower end. What is the frame rate of the MPEG-4 video stream? If fps is large and given the fact that bit rate is also high and VOL width/height is 320 x 240, then playback may not be as desired.... I suggest that you decode the MPEG-4 Simple Profile bitstream using an MPEG-4 reference video decoder and play the decoded sequence in some YUV 4:2:0 player.... Regards, Parag. On Mon, 12 Jan 2024 John Lam wrote : >Hi all, > >I've mpeg4 visual stream conformed to ISO/IEC 14496-2 simple profile, >its resolution is QVGA and bit rate is about 950kbps. I constructed .mp4 >file header for this visual stream, then I can play it using QuickTime >6.3 and RealOne player. However, I find that there is "blocky" effect >for some instances while playing it in both QuickTime and RealOne >player. I wonder if it is caused by my out-dated computer configuration >or something else. Does anyone has clue on it? I can send the file to >you to view the actual "blocky" effect. Does anyone know what is the >computer configuration requirement for playing such visual stream by >QuickTime or RealOne player? Thank you! > >My computer config: >1. Pentium III 500MHz >2. 128MB SDRAM >3. SCSI hard disk with 150MB free space. > >-- >Best Regards, >John Lam > > >_______________________________________________ >Mp4-tech mailing list >Mp4-tech@lists.mpegif.org >http://lists.mpegif.org/mailman/listinfo/mp4-tech > >Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From kristen cisco.com Mon Jan 12 16:02:38 2004 From: kristen cisco.com (Kristen Marie Robins) Date: Mon Jan 12 19:52:05 2004 Subject: Fwd: [Mp4-tech] DRM References: <4.3.2.7.2.20040112155054.03af25f0@mira-sjcm-1.cisco.com> Message-ID: <4003359E.7AA33516@cisco.com> Hi Christophe, An out-of-the-box solution is in the works. We've been adding code to the MPEG4IP project which will allow AES-CTR mode style encryption and decryption using the MPEG4IP server and client. Unfortunately, we have not yet committed this code, but it should be available for download before the end of this month at the standard SourceForge location, http://mpeg4ip.sourceforge.net The one drawback is that we do not yet have a solution for key management; there is key management server provided nor an interface to get to one. Encryption/decryption is supported for both local and streamed media. --Kristen > > To: MP4-Tech@lists.mpegif.org > > From: Christophe Lenaerts > > Date: Wed, 31 Dec 2023 19:30:19 +0100 > > X-Mailer: Apple Mail (2.609) > > Subject: [Mp4-tech] DRM > > X-BeenThere: mp4-tech@lists.mpegif.org > > X-Mailman-Version: 2.1.2 > > List-Id: > > List-Help: > > List-Post: > > List-Subscribe: , > > > > List-Archive: > > List-Unsubscribe: , > > > > Sender: mp4-tech-bounces@lists.mpegif.org > > > > Hi, > > > > I'm looking for a DRM solution that works for MPEG 4. We currently have > > a solution running on the Windows Media DRM, and would like to switch > > to MPEG 4. > > > > Do you know of any out of the box solutions? Or if not, someone that > > already has something in place and could share their experience? > > > > Thanks you very much, and best wishes for 2004! > > > > > > Christophe > > ------------------------------------------------------------------------ --------------------- > > Christophe Lenaerts - CEO > > Telemak > > Tel (+32) 2 346 11 14 > > Fax (+2) 53 68 33 68 > > Mobile (+32) 475 47 18 15 > > > > > > ------------------------------------------------------------------------ --------------------- > > > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php From bfelts envivio.com Mon Jan 12 16:40:46 2004 From: bfelts envivio.com (Boris Felts) Date: Mon Jan 12 19:52:10 2004 Subject: [Mp4-tech] mpeg4 player for pocket pc In-Reply-To: <0ADFC3A378B7B2408351059DCC465DAD63BFA2@xchange.sfo.envivio.com> Message-ID: <0ADFC3A378B7B2408351059DCC465DAD41D55F@xchange.sfo.envivio.com> We are not providing DivX but MPEG-4 audio, video and systems. This is our own implementation, and it is not open source. Therefore we have no link to source code. Best regards Boris Felts Envivio > -----Original Message----- > From: azaka@abo.fi [mailto:azaka@abo.fi] > Sent: Sunday, January 11, 2024 6:38 AM > To: bfelts@envivio.com > Cc: rakesh kothari; mp4-tech@lists.mpegif.org; Wesley De Neve > Subject: Re: Re: [Mp4-tech] mpeg4 player for pocket pc > > > > Hi, > > I need DivX Source code. Do u guys have a link containing Source Code > of DivX. > > Asim. > > > Quoting bfelts@envivio.com: > > > Envivio has a PPC player which supports streaming, AAC audio, ASP > > video, Advanced2D graphics. > > You can contact us to get an evaluation copy. > > > > Boris Felts > > Envivio > > > > > > > > hi, > > > > > > > > > > > > I tried mpeg-4 streaming with mpeg4IP and osmo4 player but Osmo4 > > player it > > > seems doesn't recgnises rtsp protocol. Osmo4 also has problem with > > audio > > > encoded with faac. Can anbody help me with this regard? > Can we make > > osmo4 > > > compatible for streaming mpeg4, or is there any other player for > > Pocket PC > > > with which we can do that? > > > > > > > > > > > > Thanks for your help. > > > > > > > > > > > > Regards, > > > > > > Rakesh Kothari > > > > > > > > > > > > On Thu, 08 Jan 2024 Wesley De Neve wrote : > > > > > > >Hi, > > > > > > > > > > > > > >rakesh kothari wrote: > > > > > > > > hi, > > > > > > > > > > > > > > > > I would be very thankful if anyone could give me pointers > > regarding > > > > > > > > mpeg-4 player (which can play .mp4 files) for pocket PC. I > > have > > > > > > > > searched a lot for it with no results. Platform 4 player is > > giving me > > > > > > > > problems while trying to play streamed .mp4 files in my pocket > > PC. > > > > > > > > > > > > > >you could also have a look at the GPAC project (and perhaps at > > the > > > > > > >capabilities of their libm4isomedia library): > > > > > > > > > > > > > >http://gpac.sourceforge.net > > > > > > >http://www.comelec.enst.fr/osmo4/ > > > > > > > > > > > > > >Kind regards, > > > > > > >Wesley > > > > > > > > > > > > > >-- > > > > > > >Ghent University > > > > > > >ELIS / Multimedia Lab > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------- > > This mail sent through IMP: http://horde.org/imp/ > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > Note: Conduct on the mailing list is subject to the Antitrust > > guidelines found at > > http://www.mpegif.org/public/documents/vault/mp-out-30042- > Antitrust.php > > > From f.fakhrieh ece.ut.ac.ir Tue Jan 13 11:48:56 2004 From: f.fakhrieh ece.ut.ac.ir (f.fakhrieh@ece.ut.ac.ir) Date: Tue Jan 13 02:40:13 2004 Subject: [Mp4-tech] MPEG-j Message-ID: <3629.194.225.68.59.1073981936.squirrel@shahab.ut.ac.ir> Hi all, I want to know how I can combine MPEG_J and MPEG-2 or MPEG-4 stream are there any player that support it ? From pkudumakis crl.co.uk Tue Jan 13 10:26:46 2004 From: pkudumakis crl.co.uk (Panos Kudumakis) Date: Tue Jan 13 05:35:49 2004 Subject: Fwd: [Mp4-tech] DRM Message-ID: <2750517732@crl.co.uk> Kristen How this solution achieves interoperability if the content is protected with a different encryption ? Panos www.crl.co.uk/projects/moses ____________________Reply Separator____________________ Subject: Re: Fwd: [Mp4-tech] DRM Author: "Kristen Marie Robins" Date: 1/13/04 12:02 AM Hi Christophe, An out-of-the-box solution is in the works. We've been adding code to the MPEG4IP project which will allow AES-CTR mode style encryption and decryption using the MPEG4IP server and client. Unfortunately, we have not yet committed this code, but it should be available for download before the end of this month at the standard SourceForge location, http://mpeg4ip.sourceforge.net The one drawback is that we do not yet have a solution for key management; there is key management server provided nor an interface to get to one. Encryption/decryption is supported for both local and streamed media. --Kristen > > To: MP4-Tech@lists.mpegif.org > > From: Christophe Lenaerts > > Date: Wed, 31 Dec 2023 19:30:19 +0100 > > X-Mailer: Apple Mail (2.609) > > Subject: [Mp4-tech] DRM > > X-BeenThere: mp4-tech@lists.mpegif.org > > X-Mailman-Version: 2.1.2 > > List-Id: > > List-Help: > > List-Post: > > List-Subscribe: , > > > > List-Archive: > > List-Unsubscribe: , > > > > Sender: mp4-tech-bounces@lists.mpegif.org > > > > Hi, > > > > I'm looking for a DRM solution that works for MPEG 4. We currently have > > a solution running on the Windows Media DRM, and would like to switch > > to MPEG 4. > > > > Do you know of any out of the box solutions? Or if not, someone that > > already has something in place and could share their experience? > > > > Thanks you very much, and best wishes for 2004! > > > > > > Christophe > > ------------------------------------------------------------------------ --------------------- > > Christophe Lenaerts - CEO > > Telemak > > Tel (+32) 2 346 11 14 > > Fax (+2) 53 68 33 68 > > Mobile (+32) 475 47 18 15 > > > > > > ------------------------------------------------------------------------ --------------------- > > > > _______________________________________________ > > Mp4-tech mailing list > > Mp4-tech@lists.mpegif.org > > http://lists.mpegif.org/mailman/listinfo/mp4-tech > > > > Note: Conduct on the mailing list is subject to the Antitrust guidelines found at > > http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php _______________________________________________ Mp4-tech mailing list Mp4-tech@lists.mpegif.org http://lists.mpegif.org/mailman/listinfo/mp4-tech Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php -********************************************************************* This communication contains information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). Please note that any unauthorised distribution, copying or use of this communication, or the information in it, is strictly prohibited. If you have received this communication in error, please notify us by email or by telephone (+44 20 8848 9779) and then delete the email and any copies of it. This communication is from Central Research Laboratories Ltd., whose principal office is at Dawley Road, Hayes, Middlesex, England. This footnote also confirms that this email message has been checked for the presence of computer viruses. ********************************************************************** From Apoorva soc-soft.com Tue Jan 13 17:45:34 2004 From: Apoorva soc-soft.com (Apoorva M Ankad) Date: Tue Jan 13 07:29:28 2004 Subject: [Mp4-tech] In need of test streams Message-ID: Dear all, I am in need of the following wave files for testing the AAC Encoder TrackNo Duration Contents ---------------------------------------------------------- 65 1:52 Orchestra 66 0:18 Wind ensemble 69 0:33 ABBA 70 0:21 Eddie Rabbit Can anybody kindly tell me where I can find these? Thanking you, Apoorva -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040113/96f32c00/attachment.html From A.Thomson indigovision.com Tue Jan 13 12:48:57 2004 From: A.Thomson indigovision.com (Alan Thomson) Date: Tue Jan 13 07:57:19 2004 Subject: [Mp4-tech] In need of test streams Message-ID: <67336BF4D5D23C4AA30EC72DFCFCA6DF94B230@peebles.indigovision.com> These files are found on the European Broadcasting Union SQAM (sound quality assessment material) CD, along with another 66 tracks. Contact this helpful lady and she will send you a copy: Mrs Armi Heikkinen Communications Service European Broadcasting Union 17 A Ancienne route CP 45 1218 Grand-Saconnex (GE) Switzerland tel:+004122 717 20 35 fax:+004122 747 40 35 e-mail : heikkinen@ebu.ch regards, Alan -----Original Message----- From: Apoorva M Ankad [mailto:Apoorva@soc-soft.com] Sent: 13 January 2024 12:16 To: mp4-tech@lists.mpegif.org Subject: [Mp4-tech] In need of test streams Dear all, I am in need of the following wave files for testing the AAC Encoder TrackNo Duration Contents ---------------------------------------------------------- 65 1:52 Orchestra 66 0:18 Wind ensemble 69 0:33 ABBA 70 0:21 Eddie Rabbit Can anybody kindly tell me where I can find these? Thanking you, Apoorva -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/mp4-tech/attachments/20040113/e9d5d498/attachment-0001.html From video solweb.no Tue Jan 13 16:22:10 2004 From: video solweb.no (=?ISO-8859-1?Q?Andreas_=C5kre_Solberg?=) Date: Tue Jan 13 10:35:07 2004 Subject: [Mp4-tech] Creating MPEG-4 scenes with references to multicast streams Message-ID: <41A54CB2-45DC-11D8-BF70-000A957C8626@solweb.no> I need a tool to create MPEG-4 scenes with references to multicast streams. I want to create a video scene with i.e. four video objects reffering to four different multicast mpeg-4 streams. I know the Envivio Studio authoring software can do this, but I need to assign the multicast addresses dynamicly, so in result the scene must be created dynamicly on demand. The XMT-tools from IBM seems perfect to be executed from a perl script or similar due to its command line interface. BUT IBM reports that the tools do not support rtsp streams in the