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Old 7th July 2016, 09:44   #1027  |  Link
youli
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Join Date: Mar 2015
Location: Ukraine
Posts: 23
Hello, r0lZ. Hello, everyone.
I made the first HEVC 10-bit full over-under BD-Rip for test of my new UHD TV LG 55UF85.
It looks great!

Really, x265 default settings trying to convert noise pixels to flat areas for bitrate reduction - it looks like artefacts. After tests for preserving high-frequency detail by x265 encoder, and also saving of the native noise during the compression I added few command line options (bold):
--me umh --subme 7 --aq-mode 3 --aq-strength 0.7 --no-sao --no-deblock --rd 3 --psy-rd 0.8 --b-adapt 1 --ctu 64 --rc-lookahead 24 --bframes 4 --merange 25 --ipratio 1.1 --pbratio 1.0 --qcomp 0.8 --rdoq-level 1 --psy-rdoq 0.7

Media info:
wpp / ctu=64 / min-cu-size=16 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=2 / subme=7 / merange=25 / no-rect / no-amp / max-merge=2 / temporal-mvp / early-skip / recursion-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=0 / rc-lookahead=24 / lookahead-slices=8 / bframes=4 / bframe-bias=0 / b-adapt=1 / ref=1 / limit-refs=0 / no-limit-modes / no-weightp / no-weightb / aq-mode=3 / qg-size=32 / aq-strength=0.70 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=0.80 / rdoq-level=1 / psy-rdoq=0.70 / no-rd-refine / no-signhide / no-deblock / no-sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=crf / crf=23.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.10 / pbratio=1.00



x265 [info]: frame I: 669, Avg QP:20.95 kb/s: 23348.66
x265 [info]: frame P: 98386, Avg QP:22.91 kb/s: 11636.39
x265 [info]: frame B: 66156, Avg QP:24.43 kb/s: 3368.81
x265 [info]: consecutive B-frames: 36.1% 61.9% 1.4% 0.5% 0.2%

encoded 165211 frames in 37868.77s (4.36 fps), 8373.20 kb/s, Avg QP:23.51

r0lZ, thanks again for your program!
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