Quote:
Originally Posted by benwaggoner
We've got some decades of digital image processing under our belt, and we've consistantly seen that 4:2:0 delivers more visual value per bit than 4:4:4 when bitrate is contstrained. Chroma subsampling was part of JPEG, even, at the birth of this technology.
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A clear argumentum ad antiquitatem "we have always done it like that" fallacy.
By leaving the question on how to do the best perceptual compression to the codec on a frame by frame basis you will get the best solution, not by some arbitrary constraint impacting every frame the same way before you even start the compression.