View Single Post
Old 20th October 2018, 22:39   #6459  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
Quote:
Originally Posted by Boulder View Post
I was wondering about this parameter. Does it actually shift bits inside the frame so that the distribution is closer to the average - so that some areas with fine detail could suffer at the cost of flat areas looking better? Or the other way around as flat areas could be compressed using a lower QP to make them look equally good?


AFAIK it works by reducing signaling overhead without changing actual pixels. There are several bitstream options that do things like that. This is the one likely to have the most impact, as WP signaling can take place MANY times per frame. The others are per frame or per GOP.


Sent from my iPhone using Tapatalk
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote