[FFmpeg-devel] [libav-devel] [RFC] M-bit to N-bit YUV conversions
madshi at gmail.com
Thu Aug 25 22:59:32 CEST 2011
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.
> fixed in ffmpegs swscale :)
> took less time than the reg tests
Best regards, Mathias.
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