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Old 2nd December 2009, 14:55   #32  |  Link
2Bdecided
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Join Date: Dec 2002
Location: UK
Posts: 1,673
Quote:
Originally Posted by sumawo13 View Post
I mean I understand we're less sensitive to color and all, but I can clearly see pixelation in some videos on YouTube, especially in bright reds.
That's probably bitrate starvation, or possibly poor decoding.

Chroma-subsampling makes the chroma a little soft - not blocky or pixelated (if decoded correctly).

Many encoders trash the chroma channels as they run out of bitrate, giving a blocky look on chroma edges. This isn't caused by 4:2:0 chroma, and could still happen with low bitrate 4:4:4 chroma.

Cheers,
David.
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