[Andy o]

Originally Posted by STaRGaZeR

Disagree. In sources where different subsampling actually makes a difference, like in highly detailed colored letters, you could say 4:2:2 is better than 4:2:0, but it in no way can touch 4:4:4. It's the difference between being like the source and being completely different because of the later reconstruction. It also has that horrible effect in which you see stuff deformed in horizontal, but not in vertical, again because of the latter reconstruction. 4:2:0 at least is fucked up both vertically and horizontally.

That said, 4:4:4 is out of the question. Studio footage is 4:2:2, so it's highly unlikely we will ever get more than that, and that's if we ever get more than 4:2:0.

I see it this way: wouldn't 2160p 4:2:0 already have 1080p-equivalent chroma resolution? Couldn't it be downscaled by the renderer to 1080p 4:4:4?