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  1. CRF Guide (Constant Rate Factor in x264, x265 and libvpx)
    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 ...
    http://slhck.info > video > crf-guide
  2. Size between CRF 20 and 17 : r/ffmpeg - Reddit
    2023/7/26 -Yes. The way CRF works is, the higher the CRF, the smaller the output file. And the rule of thumb for X264 and X265 is that for every 3 steps ...
    https://www.reddit.com > comments
  3. What is CRF in video encoding? - Quora
    2021/3/8 -Constant Rate Factor. It's a parameter used in the x264 and x265 open source encoders, and often exposed by the many tools that incorporate ...
    https://www.quora.com > What-is-CRF-in-video-encoding
  4. CRF Guide. CRF stands for Constant Rate Factor… | by An0nYmOu
    2015/1/23 -Constant Rate Factor will increase the Q to, say, 20, for high motion frames (compressing them more) and lower it down to 16 for low motion.
    https://medium.com > crf-guide-74a4...
  5. CRF values? - VideoHelp Forum
    2020/8/16 -For HD source, you get away with higher CRF 19-20. For SD resolution , while watching on big TV screens, content gets upscaled, every artifact ...
    https://forum.videohelp.com > threads
  6. What is -crf used for in FFmpeg? - Super User
    2013/11/18 -That refers to the Constant Rate Factor ( crf ). As others have pointed out (Thanks all), the values will depend on which encoder you're ...
    https://superuser.com > questions > w...
  7. Which VP9's crf value corresponds to x264's crf 20? - Doom9's Forum
    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 ...
    http://forum.doom9.net > showthread
  8. H.264 Video Encoding Guide - FFmpeg Wiki
    2023/9/23 -264 Video Encoding Guide. Contents. Constant Rate Factor (CRF); Two-Pass; Lossless H.264; Overwriting default preset settings; Additional ...
    https://trac.ffmpeg.org > wiki > Encode
  9. Choosing the Optimal CRF Value for Capped CRF Encoding
    2020/2/3 -So, if you're using CRF 20, you're almost certainly delivering a VMAF quality that's higher than 93-95 (since lower CRF values deliver higher ...
    https://streaminglearningcenter.com > ...
  10. Will I get any visual benefit if I use CRF values below 17/18 in x264 ...
    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.
    https://superuser.com > questions > wi...
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