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2017/2/24 -Constant Rate Factor at CRF=18 will increase the QP to, say, 20, for high motion frames (compressing them more) and lower it down to 16 for low ...

2023/5/24 -The RF factor is the scale of quality if you don't change the settings. It means if you choose a preset medium RF 20, RF 21 will be worse, RF 19 ...

2021/4/13 -I want to encode a 480p movie with VP9 in two passes. Google recommends to use crf 34 for low quality encoding of 480p video, and crf 33 for ...

2020/10/30 -A CRF of 18 in x264 corresponds to 20 in x265. Does that mean they give about the same file size? Or the same image quality? outhud is offline ...

2019/6/15 -The short answer is: no, you are not likely to get visual benefits, or at least none that most people will notice.

The Constant Rate Factor (CRF) is the default quality setting for the x264 encoder. You can set the values between 0 and 51, where lower values would result ...

2020/8/16 -Lower crf with x264/x265 yields diminishing returns (quality vs bitrate). CRF16 is already quite low. Higher resolution with higher crf ...

2020/2/3 -The other point about VMAF is that encoding with CRF 23 and x264 delivers an average VMAF score of 95.96 in the test clips I used in my book ...

2023/9/23 -264 Video Encoding Guide. Contents. Constant Rate Factor (CRF); Two-Pass; Lossless H.264; Overwriting default preset settings; Additional ...

x264 has two motion estimation algorithms worth using, umh and tesa. ... CRF range, but most encodes will use a value between 15.0 and 20.0. ... The setting in x264 ...