25.08.2021, 21:14
Quote:One problem still persists: same config is slower in Hybrid than in FFmpeg, but Hybrid uses more CPU than FFmpeg.You are not using the same config,....
Any idea why this might be?
Looking at the x264 encoding setting there are quire a few differences,... you especiall use a way higher sub-pixel precision in Hybrid.
"D:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -loglevel fatal -noautorotate -nostdin -threads 8 -c:v h264_cuvid -deint 2 -i "G:\F1\DIGI Sport 4 HD - F3 Cursa 2021.07.31 21.47.mkv" -map 0:0 -an -sn -vf scale=in_range=tv:out_range=tv -pix_fmt yuv420p -vsync 0 -f rawvideo - | "D:\Program Files\Hybrid\64bit\x264.exe" --preset veryfast --profile high --level 4.2 --ref 3 --direct auto --b-adapt 0 --sync-lookahead 18 --qcomp 0.50 --rc-lookahead 40 --qpmax 51 --partitions i4x4,p8x8,b8x8 --no-fast-pskip --subme 5 --aq-mode 0 --vbv-maxrate 62500 --vbv-bufsize 78125 --sar 1:1 --non-deterministic --range tv --colormatrix bt709 --demuxer raw --input-res 1920x1080 --input-csp i420 --input-range tv --input-depth 8 --fps 50/1 --output-depth 8 --output "C:\Users\Alexa\AppData\Local\Temp\2021-08-25@21_45_31_9010_02.264" -
ffmpeg -r 50 -c:v h264_cuvid -deint 2 -i <input> -c:v libx264 -profile:v high -preset veryfast -crf 18 -x264opts "keyint=500" -c:a copy <output.mkv>
looking at what 'preset veryfast' does:
- veryfast:
--no-mixed-refs --rc-lookahead 10
--ref 1 --subme 2 --trellis 0 --weightp 1
-> You use different way slower encoding settings in Hybrid.
Cu Selur
----
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.