[FFmpeg-trac] #1076(undetermined:new): mpeg4v2 enc: corrupted output with iff ilbm (ham6) input

[FFmpeg]

#1076: mpeg4v2 enc: corrupted output with iff ilbm (ham6) input
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 -vcodec msmpeg4 works ok

 {{{
 C:\>ffmpeg -i 1.iff -vcodec msmpeg4v2 out_xx.avi
 ffmpeg version N-38622-g1eabd71 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar  7 2012 00:18:03 with gcc 4.6.2
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libope
 ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --en
 able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger -
 -enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-
 amrwben
 c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
 --enable-
 libxvid --enable-zlib
   libavutil      51. 42.100 / 51. 42.100
   libavcodec     54. 10.100 / 54. 10.100
   libavformat    54.  2.100 / 54.  2.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 63.100 /  2. 63.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  7.100 /  0.  7.100
   libpostproc    52.  0.100 / 52.  0.100
 [IFF @ 02159BE0] Estimating duration from bitrate, this may be inaccurate
 Input #0, IFF, from '1.iff':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: iff_byterun1 (ILBM / 0x4D424C49), rgba, 320x256,
 SAR 1:6
 4 DAR 5:256, 90k tbr, 90k tbn, 90k tbc
 Incompatible pixel format 'rgba' for codec 'msmpeg4v2', auto-selecting
 format 'y
 uv420p'
 [buffer @ 02161F40] w:320 h:256 pixfmt:rgba tb:1/1000000 sar:1/64
 sws_param:
 [buffersink @ 02161420] auto-inserting filter 'auto-inserted scale 0'
 between th
 e filter 'src' and the filter 'out'
 [scale @ 021619E0] w:320 h:256 fmt:rgba -> w:320 h:256 fmt:yuv420p
 flags:0x4
 Output #0, avi, to 'out_xx.avi':
   Metadata:
     ISFT            : Lavf54.2.100
     Stream #0:0: Video: msmpeg4v2 (MP42 / 0x3234504D), yuv420p, 320x256
 [SAR 1:6
 4 DAR 5:256], q=2-31, 200 kb/s, 90k tbn, 90k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (iff_byterun1 -> msmpeg4v2)
 Press [q] to stop, [?] for help
 frame=    1 fps=  0 q=3.0 Lsize=      16kB time=00:00:00.00
 bitrate=11829818.2kb
 its/s
 video:10kB audio:0kB global headers:0kB muxing overhead 55.150706%
 }}}

 {{{
 C:\>ffmpeg -i out_xx.avi out.mpg
 ffmpeg version N-38622-g1eabd71 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar  7 2012 00:18:03 with gcc 4.6.2
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libope
 ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --en
 able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger -
 -enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-
 amrwben
 c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
 --enable-
 libxvid --enable-zlib
   libavutil      51. 42.100 / 51. 42.100
   libavcodec     54. 10.100 / 54. 10.100
   libavformat    54.  2.100 / 54.  2.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 63.100 /  2. 63.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  7.100 /  0.  7.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, avi, from 'out_xx.avi':
   Metadata:
     encoder         : Lavf54.2.100
   Duration: 00:00:00.00, start: 0.000000, bitrate: -2147483 kb/s
     Stream #0:0: Video: msmpeg4v2 (MP42 / 0x3234504D), yuv420p, 320x256,
 SAR 1:6
 4 DAR 5:256, 90k tbr, 90k tbn, 90k tbc
 w:320 h:256 pixfmt:yuv420p tb:1/1000000 sar:1/64 sws_param:
 [mpeg @ 0215A980] VBV buffer size not set, muxing may fail
 Output #0, mpeg, to 'out.mpg':
   Metadata:
     encoder         : Lavf54.2.100
     Stream #0:0: Video: mpeg1video, yuv420p, 320x256 [SAR 1:64 DAR 5:256],
 q=2-3
 1, 200 kb/s, 90k tbn, 60 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (msmpeg4v2 -> mpeg1video)
 Press [q] to stop, [?] for help
 [msmpeg4v2 @ 0215A0E0] ignoring overflow at 19 15
 [msmpeg4v2 @ 0215A0E0] overreading 6 bits
 [msmpeg4v2 @ 0215A0E0] concealing 320 DC, 320 AC, 320 MV errors
 frame=    1 fps=  0 q=1.6 Lsize=       2kB time=00:00:00.01 bitrate=
 983.0kbits/
 s
 video:1kB audio:0kB global headers:0kB muxing overhead 66.098946%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1076>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker