View Single Post
Old 20th October 2017, 19:10   #10  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,750
Quote:
Originally Posted by Asmodian View Post
For 1080p anime I have had good results with:
--crf 18 -p 8 -F 1 --pools "5" --lookahead-slices 0 --rd-refine --tskip --tskip-fast --tu-inter 4 --tu-intra 4 --limit-tu 4 --rect --amp --limit-modes --no-strong-intra-smoothing
Why --pools "5"? Are you running on a NUMA system? I would think that explicitly setting --frame-threads would control quality and perf better. If you're running on a NUMA system, you can then set --pools "+,-" or whatever.

The number of frame threads is what impacts quality in multithreaded encoding, so better to set that directly and let x265 figure out how many cores and threads it can productively use for that encode.

using --pool 5 would map to --frame-threads 3.

Or is this about something else entirely?
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote