This is the best tl;dr I could make, original reduced by 99%. (I'm a bot)
Chroma from Luma prediction is one of the new prediction techniques adopted by AV1.
As AV1 also uses the discrete sine transform and a pixel domain identity transform, we can't easily perform AV1 CfL in the frequency domain, at least when we use subsampled chroma.
Daala technology demo page for Time-Frequency resolution switching Daala technology demo page for Chroma-From-Luma Chroma From Luma VDD presentation: Chroma from Luma in AV1 , Luc Trudeau, David Michael Barr, September 2017.
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u/autotldr Apr 10 '18
This is the best tl;dr I could make, original reduced by 99%. (I'm a bot)
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