[FFmpeg-devel] [libav-devel] [RFC] M-bit to N-bit YUV conversions
michaelni at gmx.at
Fri Aug 26 14:33:20 CEST 2011
On Thu, Aug 25, 2011 at 10:59:32PM +0200, madshi wrote:
> 2011/8/25 Michael Niedermayer <michaelni at gmx.at>
> > true, i had somehow missed that the low frequency can be
> > made more fine grained and accurate at the cost of poorer
> > accuracy at the high frequency.
> > I agree this likely is the ideal solution from a psychovissual
> > point of view
> Of course this comes at the cost of slower performance and lower compression
> efficiency, though. So it might make sense to offer 2 different algorithms.
> Maybe one with simple << 2 shifting for best speed and compression
> efficiency, and the other one with dithering for best quality.
and patches for all this are very welcome!
> > fixed in ffmpegs swscale :)
> > took less time than the reg tests
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Opposition brings concord. Out of discord comes the fairest harmony.
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