[FFmpeg-devel] A/V desync issue on mov files - Patch required

[Alexandre Guion]

Hi all,

I've run into a desync issue on mov files coming from the iWizz software when putting them through ffmpeg. It seems pretty clear that you guys are aware of it since it outputs the following: "edit list not starting at 0, a/v desync might occur, patch welcome". I was wondering if a patch was in the plan at all? I'll be glad to post the file if you need it.

Thanks!

Alex Guion


./ffmpeg.exe -i ImageBehind-out-of-sync.mov ImageBehind-out-of-sync.mov.mpg
FFmpeg version SVN-r14282, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --enable-memalign-hack --enable-shared --disable-static --disable-debug --enable-gpl --enable-swscale --enable-postproc --enable-w32threads --enable-protocols --enable-liba52 --enable-libmp3lame --enable-zlib --enable-libfaad --enable-libfaac --enable-libx264 --enable-libgsm --enable-libamr-nb --enable-libamr-wb --enable-nonfree --enable-libxvid --enable-libvorbis
  libavutil version: 49.7.0
  libavcodec version: 51.60.0
  libavformat version: 52.17.0
  libavdevice version: 52.0.0
  built on Jul 18 2008 14:09:29, gcc: 4.2.1-sjlj (mingw32-2)
[mov,mp4,m4a,3gp,3g2,mj2 @ 003DB890]edit list not starting at 0, a/v desync might occur, patch welcome
[mov,mp4,m4a,3gp,3g2,mj2 @ 003DB890]edit list not starting at 0, a/v desync might occur, patch welcome
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'ImageBehind-out-of-sync.mov':
  Duration: 00:06:40.88, start: 0.000000, bitrate: 453 kb/s
    Stream #0.0(eng): Video: h264, yuv420p, 496x368, 25.00 tb(r)
    Stream #0.1(fra): Audio: libfaad, 48000 Hz, stereo
Output #0, mpeg, to 'ImageBehind-out-of-sync.mov.mpg':
    Stream #0.0(eng): Video: mpeg1video, yuv420p, 496x368, q=2-31, 200 kb/s, 25. 00 tb(c)
    Stream #0.1(fra): Audio: mp2, 48000 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop encoding
frame=10022 fps=302 q=31.0 Lsize=   17928kB time=398.98 bitrate= 368.1kbits/s

video:14637kB audio:3117kB global headers:0kB muxing overhead 0.977406%