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Old 31st October 2018, 11:29   #6476  |  Link
RainyDog
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Join Date: May 2009
Posts: 184
Quote:
Originally Posted by benwaggoner View Post
Say, does anyone have any data showing potential benefits of using some of the "beyond placebo" settings?

For example
  1. --subme 6 or 7 instead of 5
  2. --me sea instead of star
  3. --bframes 16 instead of 8
  4. --ref 6+ instead of 5
  5. --tskip
  6. --cu-lossless

I've fond some value in very low bitrates or unusual content from all but the higher subme and me, which I've not tried.
--me sea in particular cuts speed enormously.

Tskip and cu-lossless can help with anime, small text, screen captures, and other stuff with sharp detailed edges.
Is --subme tied to RDO in the way that it is in x264?

In x264, --subme 6 upwards have increased levels of RDO. But seems that RDO is its own separate thing in x265 with RD levels 1-6 and rd-refine being a separate switch too.
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