[Ffmpeg-devel] [PATCH] Snow multiple reference frames

Loren Merritt lorenm
Sun May 28 23:50:41 CEST 2006

On Sun, 28 May 2006, Michael Niedermayer wrote:
> On Fri, May 26, 2006 at 01:53:20AM -0700, Loren Merritt wrote:
>> $subject.
>> notes:
>> * Reduces bitrate by anywhere from 0 to 15%. Very content dependent.
>> * Doesn't modify mv prediction. It still takes a median of neighbors,
>> regardless of which ref they used.
>> * Doesn't work very well at low bitrate or with 8x8 partitions. Maybe
>> I'm underestimating the cost of specifying refs, or maybe due to the
>> above prediction? (but an exact rangecoder cost didn't help either.)
> patch looks great, apply!


> maybe the ref could be used in the ac context of the mv or the other
> way around

This helped, included in the commit.

--Loren Merritt

More information about the ffmpeg-devel mailing list