[Ffmpeg-devel] problem with change to libavformat/mov.c between revision 5666 and 5667

Baptiste Coudurier baptiste.coudurier
Mon Sep 25 10:27:19 CEST 2006


Brian Hirt wrote:
> Hi,
> I've run across a problem decoding a video in mp4 file format.   I have
> a bunch of sample videos that I use for testing.  They are mostly mpeg4
> videos.  Up until version 5666 the video decodes just fine.  However,
> with the changes introduced to libavformat/mov.c in revision 5667 I new
> get a "warning: first frame is no keyframe" warning and the first second
> or so of the video is garbled.  I'm not very intimate with the code so
> I'm not sure what's going on.  A brief look at the codes seems like 5666
> may have been handling a missing keyframe by finding the closest one
> which seemed to work just fine.   However, I'm just speculating here.
> Does anyone have any idea what going on, or advice on better information
> that i can provide?  I have sample frames and movies i can provide if
> anyone needs access to them.

It may be a bug, can you share your sample ? or upload it to
upload.mplayerhq.hu ?

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