[Ffmpeg-devel] [PATCH] qpel approximation

[Michael Niedermayer]

Hi

On Wed, Sep 20, 2006 at 07:42:56AM +0200, Guillaume POIRIER wrote:
> Hi,
> 
> On 2/18/06, Loren Merritt <lorenm at u.washington.edu> wrote:
> >This patch adds approximate bilinear qpel mc functions, enabled for
> >B-frames only, with -lavdopts fast.
> >Comments: does it look ok? should it have a separate option?

IMHO we can always add a seperate option if people complain about
some "blinking artegacts with b frames + fast"


> >
> >16x16 mc costs, averaged over all subpel positions:
> >mpeg4 qpel:   1443 cycles
> >h264 qpel:    1148 cycles
> >bilinear qpel: 174 cycles
> >mpeg4 hpel:     99 cycles
> >
> >total speedup: ~12% in mpeg4, ~5% in h264.
> 
> Michael, you never commented on this patch. Do you need it to be resent to 
> you?

no no, patch ok, and no i dont remember why i didnt comment on it

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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