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Old 20th June 2019, 23:43   #1750  |  Link
IgorC
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Join Date: Apr 2004
Posts: 1,315
Of course You can compare AV1 and VP9 both 10bits.

My main point was not very disruptive move from VP9 8 bits to VP9 10 bits as a short term strategy (2-3 years).

Let’s put some numbers. My i7 notebook uses 20-25% of CPU during Youtube 1080p@60fps (VP9 8 bits). If it was VP9 10 bits that would be 5-7% additional CPU usage. Still pretty acceptable.
Now AV1 8 bits consumes whooping 60% at that resolution and framerate (and that with the last version of dav1d). While my notebook still can play it but a fan noise and overall slowness are quite annoying.
Let alone AV1 10 bits. Dav1d hasn’t any 10 bits code yet and it will take some time to get fast 10 bits decoding and/or hardware acceleration. My notebook gets very hot and drops a few frames here and there with near 100% CPU load with AV1 10 bits on 1080p@60. Also my another notebook with Kaby Lake i7 already has VP9 8-/ 10- bits hardware acceleration. So why not?

VP9 8 bits suffers from strong blocking and banding in dark areas and tones in my experience with Youtube and mobile Netflix videos. While VP9 10 bits can handle it very well with a little extra CPU overhead.
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