[Ffmpeg-devel] [PATCH] increase max numbers of B frames

Erik Slagter erik
Mon Feb 20 13:35:23 CET 2006


On Sun, 2006-02-19 at 13:24 -0800, Loren Merritt wrote:
> > This increases max B frames, this is necessary for h264 encoding, which
> > allows 16 B frames (maybe more?).
> 
> H.264 allows an arbitrarily large number of B-frames, but the useful 
> number is no more than in mpeg4 (i.e. 3).
> Not that there's anything wrong with the patch.

Interesting?! Would you care to elaborate a bit on this? The stats of
x264 tell me that the b-frames (ok, on average) are a lot smaller than
the I/P frames, what am I missing here? Maybe useful for the docs?
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