Quote:
Originally Posted by xyzone
That doesn't look like it produces constant quality encodes, which is what I am after in vp9.
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If I am understanding you correctly you want the same functionality as '--crf' on x264/x265 ?
To get that for vp9 (or vp8/vp10) you use '--end-usage=q' together with '--cq-level=X' where X is the quality you want across the encode, like with crf, 0 is best higher values decrease quality.
In this mode '--target-bitrate' works as a upper bitrate limit (IIRC), so you should certainly not set it to zero, in fact I don't set it at all and only use the two aforementioned parameters.
example:
vpxenc --codec=vp9 --good --cpu-used=1 --end-usage=q --cq-level=20 --aq-mode=1 -o out.webm source.y4m