[FFmpeg-devel] prefetch_motion in FFMPEG

[Satish Hiremath]

Yes i benchmarked and verified on the Beagle board (500MHz). Input is mp4
(H.264 with I,P,B) and out put is yuv4:2:0

There is a function call "s->dsp.prefetch()". I want to know how the
prefetch_motion works .


On Tue, Feb 28, 2012 at 9:11 PM, Michael Niedermayer <michaelni at gmx.at>wrote:

>  On Tue, Feb 28, 2012 at 06:07:33PM +0530, Satish Hiremath wrote:
> > Hi,
> > In  reference to the usage of the prefetch_motion in h.264.c . Do any one
> > have any idea how this function works.
> > I guess it must be done for improving performance with respect to cache.
> > But even i comment out this function and run i get the same performance.
>
> how did you benchmark exactly with what input file and what where the
> exact results ?
>
> [...]
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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