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

[Brian Hirt]

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.


Brian Hirt
t. 310-464-0726 x200
f. 310-590-3960
m. 970-708-1032
bhirt at mobygames.com
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