Question / Help Good quality in my pc, VERY BAD quality on youtube !

[dping]

I'm not convinced there's a relationship between bitrate/crf/qp and CPU usage. And if there was one, higher bitrates & lower CRFs "compress less" and therefore would be easier on the CPU, not harder.

When the encoder would normally just drop processing a moving frame with P or B frames, low CRF will force it to process it as a full quality frame.

This isn't saying that it will definitely be worse but from what I have seen, there is a point where borderline users duplicate more frames with lower CRF values

 

[sam686]

CRF=0 is a lossless mode which x264 happen to not use b-frames which is partly why there are less CPU usage then CRF=1.

Besides that, for CRF between 1 and 51, lower (better quality) is using more CPU for me with all other same settings, with the same high motion game.