On 25-06-2019 06:34 PM, Carl Eugen Hoyos wrote: >> qmax integer (encoding,video) >> Set max video quantizer scale (VBR). Must be included >> between -1 and 1024, default value is 31. > This option only applies to (some) internal encoders, not x264. The libx264 wrapper does look at and convey avctx->qmax (and qmin). Gyan