[FFmpeg-devel] Discarded B frames before first keyframe (MPEG)

[Taylan O. Toygarlar]

Michel Bardiaux wrote:
 > Taylan O. Toygarlar a ?crit :
 >> Hi Everyone,
 >>
 >> I am trying to get the exact frame numbers in my program for MPEG 
files. But some MPEG files have B frames before the first keyframe, 
which cannot be decoded and thus completely discarded.
 >>
 >> I want to know how many such frames exist in the file, how can I 
achieve this programmatically?
 >
 > There is no other way than to count them.

Can anyone give some clues on where this counting might take place?..It 
was the actual source of the problem for me-))

Thank you for your feedback,
t.