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

Martin Boehme boehme
Fri Sep 16 14:26:06 CEST 2005

Diego Biurrun wrote:
> On Thu, Sep 15, 2005 at 03:42:56PM +0200, Martin Boehme wrote:
>>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?
> Some time ago I tried a few HD trailers from apple.com on my 1.5Ghz
> PowerBook under OS X.  They all played fluently with QuickTime, while
> MPlayer was playing little more than a slideshow.  I'd guess a factor of
> 2-10, but this was some time ago, I'd have to check again.

This was for all resolutions?

A while ago, I tried some of the Apple trailers under MPlayer on my 1.6 
GHz Pentium M. My (hazy) recollection is that the 960x540 trailers 
played at full speed, the 1280x720 were slightly slower than real time, 
and I think I didn't even try 1920x1080.


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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