[FFmpeg-trac] #430(undetermined:new): Support for GMP4 variant of MPEG-4 ASP

[FFmpeg]

#430: Support for GMP4 variant of MPEG-4 ASP
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:             |                 Status:  new
  enhancement                        |              Component:
               Priority:  wish       |  undetermined
                Version:  git-       |               Keywords:  gmp4 mpeg4
  master                             |               Blocking:
             Blocked By:             |  Analyzed by developer:  0
Reproduced by developer:  0          |
-------------------------------------+-------------------------------------
 Attached file shows I-Frames with mplayer -vc +ffodivx and attached riff
 patch. Other frame types only output "header damaged".
 {{{
 $ ffmpeg -v 9 -loglevel 99 -i gmp4.avi out.avi
 ffmpeg version N-32325-g6f8b1fc, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Sep  5 2011 10:13:11 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
   libavutil    51. 16. 0 / 51. 16. 0
   libavcodec   53. 13. 0 / 53. 13. 0
   libavformat  53. 11. 0 / 53. 11. 0
   libavdevice  53.  3. 0 / 53.  3. 0
   libavfilter   2. 37. 0 /  2. 37. 0
   libswscale    2.  1. 0 /  2.  1. 0
 [avi @ 0x129f780] Format avi probed with size=2048 and score=100
 [AVI demuxer @ 0x129fda0] use odml:1
 [avi @ 0x129f780] Something went wrong during header parsing, I will
 ignore it and try to continue anyway.
 [mpeg4 @ 0x12a17a0] hmm, seems the headers are not complete, trying to
 guess time_increment_bits
 [mpeg4 @ 0x12a17a0] my guess is 5 bits ;)
 [avi @ 0x129f780] probing stream 1 pp:2500

 ...

 [avi @ 0x129f780] probing stream 1 pp:1443
 [avi @ 0x129f780] probed stream 1 failed
 [avi @ 0x129f780] max_analyze_duration 5000000 reached at 5000000
 Input #0, avi, from 'gmp4.avi':
   Duration: 00:05:00.30, start: 0.000000, bitrate: 68 kb/s
     Stream #0.0, 152, 1/30: Video: mpeg4 (GMP4 / 0x34504D47), yuv420p,
 320x240, 1/30, 30 fps, 30 tbr, 30 tbn, 30 tbc
     Stream #0.1, 152, 1/30: Subtitle: none
 [buffer @ 0x15b2300] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1
 sws_param:
 [mpeg4 @ 0x12a2920] Unsupported bit depth: 0
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf53.11.0
     Stream #0.0, 0, 1/30: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p,
 320x240, 1/30, q=2-31, 200 kb/s, 30 tbn, 30 tbc
 Stream mapping:
   Stream #0.0 -> #0.0 (mpeg4 -> mpeg4)
 Press [q] to stop, [?] for help
 [mpeg4 @ 0x12a17a0] Unsupported bit depth: 0
 [mpeg4 @ 0x12a17a0] hmm, seems the headers are not complete, trying to
 guess time_increment_bits
 [mpeg4 @ 0x12a17a0] my guess is 5 bits ;)
 [mpeg4 @ 0x12a17a0] looks like this file was encoded with
 (divx4/(old)xvid/opendivx) -> forcing low_delay flag
 [mpeg4 @ 0x12a17a0] header damaged
 Error while decoding stream #0.0

 ...

 Error while decoding stream #0.0
     Last message repeated 1054 times
 frame=    9 fps=  0 q=10.8 Lsize=     148kB time=00:00:32.03 bitrate=
 37.8kbits/s    ^M
 video:120kB audio:0kB global headers:0kB muxing overhead 23.445171%
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/430>
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