https://bitbucket.org/multicoreware/x265/issue/26
There is a 4..5 dB SSIM drop (filesizes 1:4..1:5) between presets {'faster' and faster} and {'fast' and slower}, even if CUTree is disabled.
I verified this gap with several builds I was able to compile with GCC 4.8.2, last version was v0.7+103-ce7191f49948 Win64.
I don't believe your desire is the confusion of the user to be unable to at least marginally rely on a CRF value, even across different presets. So I guess there will be a mistake causing this severe quality difference between the two preset groups. But due to the lack of a current Evaluators' Guide for v0.7+, I an mot able to guess with any certainty which preset-based option default may cause that.
-- __________ Fun and success! Mario *LigH* Rohkrämer mailto:[email protected] _______________________________________________ x265-devel mailing list [email protected] https://mailman.videolan.org/listinfo/x265-devel
