Re: [Cellar] [FFV1] Adding Bayer support

[Michael Niedermayer <[e-mail]>]

On Sat, Jan 13, 2018 at 01:01:57PM +0100, Jerome Martinez wrote:
> On 13/01/2018 12:17, Michael Niedermayer wrote:
> >On Fri, Jan 12, 2018 at 10:11:38PM +0100, Jerome Martinez wrote:
[...]
> >How can one try other transforms than YDgCoCg ?
> >do you have some patch for the ffmpeg ffv1 implementation that one could
> >experiment with to try different strategies ?
> 
> It is difficult for me to understand the suggested other methods.
> 
> I suggest the following steps:
> - I try to find enough real world sample streams I can publicly share, and
> set up a test platform, for easy comparisons.
> - I implement YDgCoCg-R support and I run tests on it
> - Anyone having an idea for better compression implements it and runs it
> against the same sample streams
> - Based on the comparison (compression performance / speed performance /
> complexity), we pick one of the suggested methods.

thats very close to what i had in mind, i think this is a great plan

about samples, please include both very sharp and more blurry (at pixel level)
samples. These 2 should behave quite different compression wise with sparse
sampling of colors. Also high noise and low noise content should be included
high ISO low light would produce very noisy content, low ISO bright light
should produce low noise.

[...]

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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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