[Ffmpeg-devel] [REQUEST] MMX/MMX2 and SSE optimizations for H.264 decoding

Martin Boehme boehme
Thu Sep 15 15:42:56 CEST 2005

Diego Biurrun wrote:
> On Thu, Sep 15, 2005 at 02:06:49PM +0200, Martin Boehme wrote:
>>And if FFmpeg is faster than Nero, that would also seem to indicate that 
>>there probably isn't too much "low-hanging fruit"...
> FWIW, it's much slower than QuickTime on PPC.

Do you have any numbers on this, or is it just based on optimization? 
What kind of factor, would you guess?

Of course, this doesn't necessarily tell us anything about the 
optimization opportunities on x86 because the H.264 Altivec code 
probably isn't as refined as the MMX code...


Martin B?hme
Inst. f. Neuro- and Bioinformatics
Ratzeburger Allee 160, D-23538 Luebeck
Phone: +49 451 500 5514
Fax:   +49 451 500 5502
boehme at inb.uni-luebeck.de

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