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

Marcus Hunger marcus.hunger
Thu Sep 15 15:25:07 CEST 2005

Am 15 Sep 2005 um 15:01 hat Martin Boehme geschrieben:

> Marcus Hunger wrote:
> > Am 15 Sep 2005 um 14:06 hat Martin Boehme geschrieben:
> >>Reimar D??ffinger wrote:
> >>>I know you can't trust it too much, but last time I checked oprofile
> >>>indicated a lot of time is spent in some more general "parsing" and
> >>>comparisons that can't be easily converted to e.g. MMX...
> >>>So yes, if somebody knows a code part that could still really benefit from
> >>>e.g. MMX please say so, because I didn't see any.
> >>
> >>And if FFmpeg is faster than Nero, that would also seem to indicate that 
> >>there probably isn't too much "low-hanging fruit"...
> > 
> > I visited the Frauenhofer I. booth at the ibc and they showed off with their h264 decoder 
> > (running on a pocket pc)  telling me it would be much faster than ffmpeg's. So I guess 
> > there is room for optimization.
> On a Pocket PC? 8-o This was probably a relatively low resolution, 
> though, right?
QVGA and QCIF @ 12.5 fps

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