Quote:
Originally Posted by Mjpeg
On the second page there is an intriguing slide from Bitmovin that with a pure software encoder version of libaom, they attained a speedup for cpu-used=0 from 1000x of VP9 in the early days down to 40x today with improvements ongoing.
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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.