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Old 15th October 2018, 19:32   #1139  |  Link
benwaggoner
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Join Date: Jan 2006
Location: Portland, OR
Posts: 4,750
Quote:
Originally Posted by Tommy Carrot View Post
The speed improvements are nice, but many of those optimizations came at the cost of the quality. I'd estimate the compression efficiency dropped about 2-3% since the earlier versions.
A 2.5x perf improvement with only a 2-3% efficiency tradeoff is a pretty good optimization option. That's ballpark to a x26? preset ratio in perf and quality.

And things have to get LOTS faster to do the psychovisual and rate control tuning to get AV1 into something that can be practically compared to other encoders/bitstreams. Quality won't matter within an order of magnitude of the current speeds. It's not like anyone is actually delivering in volume 1080p encoded with --preset placebo either!

Quality @ Bitrate @ Perf!
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