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2016/11/18 -Constant rate factor CRF allows the QP to go up for frames with a lot of motion or down for still frames resulting in a consistent perceived ...

2022/1/29 -CRF means that, all else being equal, a clip encoded with a lower value will have better quality and larger filesize than a clip with a higher ...

CRF (Constant Rate Factor) - encoding mode with constant quality. Unlike Constant QP, it encodes frames with different quantization parameters to achieve the ...

2023/9/23 -The range of the CRF scale is 0–51, where 0 is lossless (for 8 bit only, for 10 bit use -qp 0), 23 is the default, and 51 is worst quality ...

2006/11/17 -Both scenes last as long ( duration of a scene : T ). You start at a quantizer Q for both scene. It gives you a size S = T * B (simple scene) + ...

2017/2/24 -CRF versus Constant QP. CRF is a “constant quality” encoding mode, as opposed to constant bitrate (CBR). Typically you would achieve constant ...

2019/8/9 -When NVEnc is selected as the video codec, the UI quality setting says "Constant Quality: xx QP", which sets 'rc=constqp' - a setting for the " ...

2020/6/1 -CRF versus Constant QP. CRF is a “constant quality” encoding mode, as opposed to constant bitrate (CBR). Typically you would achieve ...

Rate-Quantization Model. The heart of the algorithm is a quantitative model describing Figure 2 — the relationship between QP, actual bitrate and a surrogate ...

2023/5/25 -Note: With VP9, for -crf greater than `0`, CQ mode (see below) is generally recommend over Q for better use of bits. Q mode bitrate : FFmpeg ...