[FFmpeg-devel] [RFC] filter_mb_fast

Jason Garrett-Glaser darkshikari
Thu Dec 18 11:58:00 CET 2008

Do we know under which cases filter_mb_fast is not bit exact?

I heard that it might not be in cases of duplicated reference frames
or something of the sort, but I haven't gotten any sure information.

One though of mine is that--AFAIK--filter_mb_fast uses the same logic
as x264's deblocking, so we could easily activate it for now for at
least x264 streams, knowing nothing else about why it isn't bitexact.

Dark Shikari

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