View Single Post
Old 13th January 2021, 00:02   #12  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,750
I did a bunch of testing with HEVC mezz stuff a few years back. A 1 second max GOP duration did pretty well. A half second would seek even better and still have a lot of savings relative to IDR-only. Of course, that's presuming a good random access decoder which traverses the reference hierarchy and only encodes the frames it needs to.

Reducing --ref and turning off --b-pyramid would probably improve worst-case decode time, at the loss of some compression efficiency.
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote