Re:John Carmack on JPEG
by pubby on Friday June 04, 2021 @08:14PM
(#27400657)
Mostly the issue is the layout, not the color space. YUV420 is awkward to handle because it's "420", not because it's YUV. There wouldn't be too many issues if everything ran on the 1-byte-per-pixel-component YUV444, besides converting to/from RGB for certain processing steps.
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Re:John Carmack on JPEG
by colonwqbang on Saturday June 05, 2021 @06:51AM
(#27403881)
It's quite common to upsample to 444 for processing, but using 420 for storage.