[FFmpeg-trac] #2464(undetermined:new): Decoding of Matrox mpeg2video 4:2:2 HD avi files broken

FFmpeg trac at avcodec.org
Fri Apr 12 16:57:52 CEST 2013


#2464: Decoding of Matrox mpeg2video 4:2:2 HD avi files broken
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:  mpeg2video
             Blocked By:             |  avi
Reproduced by developer:  0          |               Blocking:
                                     |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://thread.gmane.org/gmane.comp.video.ffmpeg.user/45055
 I will upload a sample of >10 seconds of which FFmpeg only decodes /
 demuxes the first ten frames.
 The output file is more than a magnitude smaller than the input file.
 {{{
 $ ffmpeg -i C0005.avi -vcodec copy out.avi
 ffmpeg version N-52029-g227b445 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Apr 12 2013 16:55:03 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 26.100 / 52. 26.100
   libavcodec     55.  2.100 / 55.  2.100
   libavformat    55.  2.100 / 55.  2.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 53.101 /  3. 53.101
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [avi @ 0x2c78f40] non-interleaved AVI
 [mpeg2video @ 0x2c79940] Invalid frame dimensions 0x0.
 Input #0, avi, from 'C0005.avi':
   Metadata:
     encoder         : Matrox MQSink Filter
   Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: mpeg2video (4:2:2) (M701 / 0x3130374D), yuv422p,
 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 50 tbc
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.2.100
     Stream #0:0: Video: mpeg2video (M701 / 0x3130374D), yuv422p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 25 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 frame=   10 fps=0.0 q=-1.0 Lsize=    2832kB time=00:00:00.40
 bitrate=58003.2kbits/s
 video:2826kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.214585%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2464>
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