quality

size

bitrate

frame rate

all together

bits per pixel per frame

(BxPxF)

PSNR

Peak signal-to-noise ratio

SSIM

Structural similarity

MSU blurring

blurring/sharpness index

MSU blocking

blocking artifact index

Tool

VQMT: Video Quality Measurement

bitrate settings

AVG vs CBR

bitrate buffer

Most important x264 settings

quality presets

encoding

speed vs quality