I guess they are using VP9, which has 4:4:4 chroma subsampling: http://youtu.be/... | Hacker News

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		dchest on Sept 29, 2014 \| parent \| context \| favorite \| on: Adobe joins the Chromebook party, starting with Ph... I guess they are using VP9, which has 4:4:4 chroma subsampling: http://youtu.be/xo_R40C7RTo?t=3m35s

dchest on Sept 30, 2014 [–]

Correction: H.264 also has 4:4:4. If you see artifacts, that probably means it wasn't correctly compressed.

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