[Ffmpeg-devel] av_seek_frame() on a h264 encoded MP4 file
Mon Dec 5 14:01:20 CET 2005
I try to do an av_seek_frame() on an mp4 movie with a H264 track
inside it. This fails, because somehow the file contains an edit list
(I'm not sure I understand this bit, because I didn't create any edit
lists in the file). But, what is worse is that the call to
av_seek_frame() leaves the stream in a funny state: the frames I read
have weird blocky color effects, which doesn't go away until about 10
seconds later (the next I frame, maybe?).
I tried debugging this but I got lost: initially I thought
av_read_frame_flush() was to blame (which could be the case if it
flushed the initial I frame), but my workaround of calling
av_seek_frame(m_con, -1, 0, AVSEEK_FLAG_BYTE) after the first
av_seek_frame call failed didn't work.
So now I turn to you: any idea what could be going on here? I can
provide the mp4 file if needed.
Jack Jansen, <Jack.Jansen at cwi.nl>, http://www.cwi.nl/~jack
If I can't dance I don't want to be part of your revolution -- Emma
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