[FFmpeg-devel] [PATCH] MMX VP3 Loop Filter
Sat Oct 4 12:34:11 CEST 2008
On Oct 4, 2008, at 4:54 AM, Diego Biurrun wrote:
> On Sat, Oct 04, 2008 at 12:21:42AM -0400, David Conrad wrote:
>> This was adapted from libtheora and gives an overall speedup of about
> Do you have benchmark numbers comparing FFmpeg and libtheora?
Using Elephant's Dream 1080p (forgot link) as a test file, libtheora
was around 30% faster than FFmpeg last time I checked. This is mainly
due to a better method of decoding DCT coefficients (FFmpeg spends
about 25% of the decode time skipping blocks to find the block a
coefficient belongs to) and more cache-friendly code after that.
I'm working on porting those optimizations to FFmpeg, then I'll do
more in-depth benchmarks again.
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