View Single Post
Old 11th July 2018, 21:34   #13  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,750
Quote:
Originally Posted by foxyshadis View Post
You can max out the refs at 1080p.
Well, you should always stay within your profile @ level limit. And for broadest compatibility, I always recommend using main tier and the lowest profile and level that work for your bit depth, fps, and frame size. For normal delivery encoding at reasonably quality-tuned settings, using anything beyond that very rarely results in a material improvement in perceptual quality or reduction in file size.

Quote:
At 4K, you only get 6, and that has to include the B frames, so if you have --b-pyramid you only get --ref 4.
This is more of syntactical thing; the actual max number of previously decoded frames that can be referenced is the same.
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote