[FFmpeg-devel] [PATCH] MMX VP3 Loop Filter
Sat Oct 4 12:37:12 CEST 2008
On Sat, Oct 04, 2008 at 06:34:11AM -0400, David Conrad wrote:
> 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
> >> 5%.
> > 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.
Neat, that is very welcome.
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