Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Video Encoding > High Efficiency Video Coding (HEVC)

Reply
 
Thread Tools Search this Thread Display Modes
Old 17th August 2020, 19:54   #1  |  Link
LaddieMawery
Registered User
 
Join Date: Aug 2020
Posts: 3
Suggestions for UHD downscale and UHD encodes?

I've been trying to go through an encode most of my collection to save space on not having full discs or remuxes of everything.

Some of these I'm downscaling to 1080p currently using crf 11 and slow preset. Time wise that isn't bad so far with two and a half hour movies taking about 8 hours. For resize options, is there a major difference between using bicubic and spline36? Secondly, is it worth bumping up qcomp from .6 to .7? Would it be worth going to 1440p instead of 1080p too?


For UHD encodes I've tried a few different settings and the only thing I know for sure right now is 2-pass has been god awful. Right now these are the settings I plan on using. I don't have a lot of experience with it so I'm more than open to suggestions on anything I should tweak or change.

Code:
--crf 16 --preset slow --output-depth 10 --rd 6 --qcomp 0.8 --hdr10-opt --repeat-headers --hrd --aud --deblock 2:-2
I'm also using StaxRip for all of this.

Last edited by LaddieMawery; 17th August 2020 at 20:12.
LaddieMawery is offline   Reply With Quote
Old 17th August 2020, 23:40   #2  |  Link
Asmodian
Registered User
 
Join Date: Feb 2002
Location: San Jose, California
Posts: 4,406
Quote:
Originally Posted by LaddieMawery View Post
For UHD encodes I've tried a few different settings and the only thing I know for sure right now is 2-pass has been god awful.
How did to come to that conclusion? It is important to use two pass when testing various options so if that does not work for you I suspect something is wrong.
__________________
madVR options explained
Asmodian is offline   Reply With Quote
Old 18th August 2020, 00:58   #3  |  Link
LaddieMawery
Registered User
 
Join Date: Aug 2020
Posts: 3
Quote:
Originally Posted by Asmodian View Post
How did to come to that conclusion? It is important to use two pass when testing various options so if that does not work for you I suspect something is wrong.
I had tried it a few times on 10 minutes sections of different movies and every time it was extremely pixelated to the point where I couldn't make out certain scenes. I'm assuming it's something I'm doing wrong because the bitrate very rarely went over 6000kbps.

Two pass has worked great for my normal BluRays though.
LaddieMawery is offline   Reply With Quote
Old 18th August 2020, 02:47   #4  |  Link
Asmodian
Registered User
 
Join Date: Feb 2002
Location: San Jose, California
Posts: 4,406
During two pass you manually set the bitrate, maybe you set it too low?
__________________
madVR options explained
Asmodian is offline   Reply With Quote
Old 18th August 2020, 20:21   #5  |  Link
Forteen88
Herr
 
Join Date: Apr 2009
Location: North Europe
Posts: 556
Quote:
Originally Posted by LaddieMawery View Post
Code:
... --deblock 2:-2
Don't you mean --deblock -2:-2 ?
Forteen88 is offline   Reply With Quote
Old 19th August 2020, 01:05   #6  |  Link
Cary Knoop
Cary Knoop
 
Cary Knoop's Avatar
 
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
Quote:
Originally Posted by LaddieMawery View Post
save space .....I'm downscaling to 1080p......using crf 11
I fail to see the logic in any of this.
Cary Knoop is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 09:57.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.