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Old 30th June 2018, 01:30   #737  |  Link
MoSal
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Join Date: Jun 2013
Posts: 94
Quote:
Originally Posted by wiak View Post
the encoding and decoding parts are too slow to be usable even on a modern ryzen 8-core
No kidding. I tested with --cpu-used=8 --tile-columns=4 expecting acceptable speed and awful quality.

The opposite turned out to be true. The speed is still slow. And the quality wasn't bad. It wasn't very good either, but still beets a tuned x265-slower profile with the specific sample I tested (1Mbps / 1080p / 30fps).

Code:
aomenc -o t.webm t.y4m -t 4 --target-bitrate=256 --enable-qm=1 \
--aq-mode=1 --film-grain-test=1 --cpu-used=8 --tile-columns=4
Code:
ffmpeg -i t.y4m -c hevc -crf 38 -preset slower -x265-params \
sao=0:deblock=-2,-2:psy-rdoq=5:qcomp=.75:ipratio=1.25:pbratio=1.18 t.mkv
The quality of --film-grain-test=1 is impressive. Better than no test, but --film-grain-test=2 adds too much grain.

On the decoding side. ffav1 should be available soon-ish.
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Last edited by MoSal; 30th June 2018 at 04:47.
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