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2017/3/1 -In H.264 and H.265, CRF ranges from 0 to 51 (like the QP). 23 is a good default for x264, and 28 is the default for x265. 18 (or 24 for x265) ...

2023/9/23 -This guide focuses on the encoder x264. It assumes you have ffmpeg compiled with --enable-libx264 . If you need help compiling and ...

2016/11/18 -In x264 for 10 bit crf of minus 12 (-12) is lossless and has a range from -12 to 51 while in ffmpeg it is 0 to 63. That way 0 should be ...

String of x264 options (overridden by element properties) in the format ... qp-max. “qp-max” guint. Maximum quantizer. Flags : Read / Write. Default value : 51 ...

2017/12/5 -Increase in QP increases quantization step size and decreases the bitrate. The rate control in x264 is based upon libavcodec's implementation, ...

QP of -1 lets x264 choose. Frametypes: I,i,P,B,b. QPs are restricted by qpmin/qpmax. Analysis ...

2016/6/14 -Hey, what would be the BEST (most lossless) color quality setting for x264 lossless using the qp=0 parameter? if i set Color Format to RGB, ...

2021/7/17 -Using libsvtav1, what QP value is considered 'visually lossless' or roughly equivalent to Nvenc H264's CQP18, or x264 CRF14? Title says it ...

qp edit. Default: Not Set. The first of three possible ratecontrol methods. Set x264 to encode the movie in Constant Quantizer mode. The number you give here ...

- Always use constant QP for I, P and B frames. - To enable in x264 use qp, ipratio and pbratio to select the desired qp values for P, I and B frames ...