Psycho-visual rate-distortion retains fine details like film grain at the expense of more blocking artifacts. Higher values make the video appear sharper and more detailed but with a higher risk of blocking artifacts. Needs to have subMe with RD_IP, RD_ALL, RD_REF_IP, RD_REF_ALL, QPRD or FULL_RD
Signature
public function psyRateDistortionOptimization(float
$psyRateDistortionOptimization )