Opened 6 years ago

Last modified 5 years ago

#2464 new defect

Decoding of Matrox mpeg2video 4:2:2 HD avi files broken

Reported by: cehoyos Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: matrox mpeg2video avi
Cc: bostjan.strojan@gmail.com Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

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%

Change History (3)

comment:2 Changed 5 years ago by cehoyos

  • Keywords matrox added

comment:3 Changed 5 years ago by cehoyos

  • Cc bostjan.strojan@gmail.com added

The sample may be invalid, see ticket #2616

Note: See TracTickets for help on using tickets.