I am trying to ensure that a specific number of B Frames should be used by 
FFMPEG. I am running the following command

ffmpeg -i Rediff.mp4  -vstats_file stats.txt -c:v libx264 -bf 16  -crf 28 

However, when i look at the stats.txt, i cannot see 16 B-Frames. Is there any 
way this can be done? I want to find a way by which i can enforce if a frame 
will be B-Frame or P-Frame or I-Frame. Is this feasible? If not, then please 
help me identify  the source code where i can update the code


Shailender Jain

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