[x264-devel] Re: [PATCH] subpel refinement

[Laurent Aimar]

On Tue, Sep 14, 2004, Loren Merritt wrote:
> Improved patch. Now supports subpel ME on all candidate MB types, 
> not just on the winner.
> 
> subpel_refine: (completely different scale from before)
> 0 => halfpel only
> 1 => 1 iteration of qpel on the winner (same as x264 r46)
> 2 => 2 iterations of qpel (about the same as my earlier patch, but faster)
> 3 => halfpel on all MB types, qpel on the winner
> 4 => qpel on all
> 5 => more iterations
> 
> benchmarks:
> mencoder dvd://1 -ovc x264 -x264encopts 
> qp_constant=19:fullinter:cabac:iframe=200:psnr
> 
> subpel_refine=1:  PSNR Global:46.82 kb/s:1048.1 fps:17.335
> subpel_refine=2:  PSNR Global:46.83 kb/s:1034.4 fps:16.970
> subpel_refine=3:  PSNR Global:46.84 kb/s:1023.3 fps:14.770
> subpel_refine=4:  PSNR Global:46.87 kb/s:1010.8 fps:11.598
> subpel_refine=5:  PSNR Global:46.88 kb/s:1006.9 fps:10.824

 Applied. Thanks :)

-- 
fenrir

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