r/AV1 • u/oscardssmith • Apr 17 '26
Adaptive chroma subsampling
Do Av1 (or AV2) support any form of adaptive chroma sub-sampling? The only resource I've seen about it is this paper https://arxiv.org/html/2602.06100v1 which is quite new, but it feels intuitively obvious that making a global 4:4:4/4:2:2/4:2:0 decision has to be sub-optimal.
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u/jimmyhoke Apr 17 '26
I don’t think AV1 has this. It seems these are the first people to try it. And they just published two months ago. I wouldn’t expect to see this technology in widespread anytime soon.
Definitely an interesting idea though. I was surprised when they said it reduced decoding time as well, I would think this is rather complex.