Quote:
Originally Posted by scharfis_brain
Also 2k Upscaled UHD Bluray benefit from better chroma resolution. (Near 444 related to 2k)
When downscaling an UHD Bluray with 2k content to 1080p, one will reduce the chroma to a quarter of its original resolution.
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Not necessarily. If someone doesn't care about playback compatibility, when using a reverse upscale filter, the idea would be to reverse upscale the luma inverting the kernel (i.e Debilinear, Debicubic etc) to the original resolution but leaving the chroma as it is, which means that you're gonna end up with a FULL HD 4:4:4 10bit file from an upscaled UHD 4:2:0 10bit which is a win win.