[MEncoder-users] Terrible results with x264

[James Hastings-Trew]

On 10-12-23 11:55 AM, belcampo wrote:
> I would like to learn how dumb I am. My observations:
> qp gives the most 'constant' quality, less quality variations than crf
> qp encodes 'significantly' faster than crf.
You have things a little mixed up. QP does not mean constant quality - 
it means constant quantizer - its only there for testing purposes and 
will produce non-optimal output. CRF is what some other encoders (like 
Handbrake) call "Constant Quality" - it adjusts the quantizers on a 
frame by frame basis to produce a consistant quality across the video - 
always what you want.