[FFmpeg-devel] [RFC] consider all mpeg4 tb_unreliable()

[elupus]

Hi, 

I just ran into an avi file which contains a mpeg4 video stream with a
time_base of 23.9.. This have been muxed into a 25fps avi, and the audio
resampled to sync..

Now r_frame_rate for this file get's set to 23.9.. instead of the real
framerate (at playback based on timestamps), 25 fps.

Forcing the codec to be considered as tb_unreliable() will work for the
sample in question ( 25fpsVidConsidered24fps.avi in incomming ). 

But i'm not sure what other problems that might cause.

Any thoughs?