[FFmpeg-user] Libx265 halves the quality when psy-rd is enabled for 444 input.

[Ferdi Scholten]

On 31-12-2023 04:32, Aditya Dandavate wrote:
> rd=3 psy-rd=2.00
Those (default) values are probably too high for your purpose, creating 
artifarcts, ringing and blurring. Reduce them (1 is the recommended 
start setting).

Read the documentation for it: 
https://x265.readthedocs.io/en/master/cli.html#psycho-visual-options