Opened 7 years ago

Last modified 4 years ago

#2616 open defect

support matrox mpeg-2 I-frame with alpha codec (m704 fourcc) — at Initial Version

Reported by: ami_stuff Owned by:
Priority: normal Component: avcodec
Version: git-master Keywords: matrox mpeg2video alpha
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

attached file decodes as mpeg2video, but there are visible some artefact in the right-bottom corner of the video

http://www1.datafilehost.com/d/ea13c1dc

C:\>ffmpeg -vcodec mpeg2video -i m704.avi out.avi
ffmpeg version N-53680-g0ab9362 Copyright (c) 2000-2013 the FFmpeg developers
  built on May 30 2013 12:14:03 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
  libavutil      52. 34.100 / 52. 34.100
  libavcodec     55. 12.102 / 55. 12.102
  libavformat    55.  8.100 / 55.  8.100
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 73.100 /  3. 73.100
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mpeg2video @ 02997f20] Invalid frame dimensions 0x0.
Input #0, avi, from 'm704.avi':
  Duration: 00:00:12.64, start: 0.000000, bitrate: 8031 kb/s
    Stream #0:0: Video: mpeg2video (4:2:2) (M704 / 0x3430374D), yuv422p, 720x480
 [SAR 8:9 DAR 4:3], 23.98 fps, 23.98 tbr, 23.97 tbn, 59.94 tbc
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf55.8.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x480 [SAR 8:9 DAR
 4:3], q=2-31, 200 kb/s, 23.98 tbn, 23.98 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video -> mpeg4)
Press [q] to stop, [?] for help
[mpeg2video @ 02997f20] Invalid frame dimensions 0x0.
[mpeg2video @ 02997f20] end mismatch left=73960 1
[mpeg2video @ 02997f20] Warning MVs not available
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=69680 1
[mpeg2video @ 02997f20] Warning MVs not available
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=69760 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=69664 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=69808 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70176 1
[mpeg2video @ 02997f20] Warning MVs not available
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70072 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70168 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=69976 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70736 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70736 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70440 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71416 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=70920 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71096 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71208 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71304 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71848 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=72432 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71208 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=71568 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=72256 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=74440 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=73032 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=72712 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=73160 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
frame=  246 fps=0.0 q=31.0 size=     467kB time=00:00:10.26 bitrate= 373.2kbits/
end mismatch left=75504 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=75672 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=77384 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
[mpeg2video @ 02997f20] end mismatch left=76168 1
[mpeg2video @ 02997f20] concealing 9 DC, 9 AC, 9 MV errors in I frame
frame=  303 fps=0.0 q=31.0 Lsize=     536kB time=00:00:12.63 bitrate= 347.2kbits
/s
video:523kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.463669%

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