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 > General > Newbies

Reply
 
Thread Tools Search this Thread Display Modes
Old 31st May 2024, 09:36   #1  |  Link
mtommy2008
Registered User
 
Join Date: Jan 2024
Posts: 1
Should I start encoding with AV1?

Hi, I wonder, should I start encoding with AV1, rather than H.265?
I read that AV1 compresses much better than H.265 and now it also supports HDR.

Which AV1-encoder should I use for archiving video?
AOM-AV1 or SVT-AV1? I hear that AOM-AV1 gives better video-quality than the faster SVT-AV1.

Last edited by Swede; 5th June 2024 at 14:35. Reason: Hidden link
mtommy2008 is offline   Reply With Quote
Old 4th June 2024, 05:30   #2  |  Link
Katie Boundary
Registered User
 
Katie Boundary's Avatar
 
Join Date: Jan 2015
Posts: 1,077
No, start with mpeg-1 and work your way up LOL.

But seriously, Xvid has an excellent balance of speed, compression efficiency, and compatibility with other programs and file formats (like AVI). I'd recommend starting with it.
__________________
I ask unusual questions but always give proper thanks to those who give correct and useful answers.
Katie Boundary is offline   Reply With Quote
Old 7th July 2024, 10:03   #3  |  Link
GeoffreyA
Registered User
 
Join Date: Jun 2024
Location: South Africa
Posts: 46
It depends on your use case. AV1 has considerably better compression than H.265, but if you want to archive video, you may find that the picture, while excellent, comes out softer than expected. It leaves older codecs behind at lower bitrates and does quite well with anime. From a compatibility point of view, AV1 may not play on one's TV or other hardware devices.

AOM has marginally better quality than SVT-AV1 and is a lot slower. If you'd like to try AV1, perhaps experiment with the two encoders in FFmpeg. Quality is controlled by -crf as in x264/5, a lower value giving better quality. A lower -preset or -cpu-used leads to better efficiency but at the cost of speed; you will want to use values of 4 and 3, respectively, for a final encode.

Code:
ffmpeg -i INPUT.mp4 -c:v libsvtav1 -preset 6 -crf 25 -g 240 -svtav1-params tune=0 -c:a copy OUTPUT.mp4
ffmpeg -i INPUT.mp4 -c:v libaom-av1 -cpu-used 5 -crf 25 -g 240 -c:a copy OUTPUT.mp4
There is also the newer H.266/VVC. Fraunhofer's VVenC encoder is slightly ahead of AV1 and, arguably, a touch sharper; but its medium preset is impractically slow at present and has to be weighed against the minor gains over AV1. Use -qp to control quality.

Code:
ffmpeg -i INPUT.mp4 -c:v libvvenc -preset fast -qp 25 -period 10 -c:a copy OUTPUT.mp4
GeoffreyA is offline   Reply With Quote
Old 6th August 2024, 14:18   #4  |  Link
Atlantis
Registered User
 
Join Date: Feb 2002
Posts: 775
What I'm doing now is that I use H.265 for 2K and AV1 for 4K.
Atlantis is offline   Reply With Quote
Old 6th August 2024, 15:24   #5  |  Link
Corn Xin
Registered User
 
Join Date: Aug 2017
Posts: 7
Quote:
Originally Posted by mtommy2008 View Post
Hi, I wonder, should I start encoding with AV1, rather than H.265?
I read that AV1 compresses much better than H.265 and now it also supports HDR.

Which AV1-encoder should I use for archiving video?
AOM-AV1 or SVT-AV1? I hear that AOM-AV1 gives better video-quality than the faster SVT-AV1.
Hey! AV1's compression and HDR support are tempting, but consider the trade-offs. If your target devices support AV1 and you have the processing power, go for it!

For archiving, I'd recommend AOM-AV1 for its quality benefits. It's slower, but worth it. If you're short on time, SVT-AV1 is a good alternative.
Corn Xin is offline   Reply With Quote
Old 6th August 2024, 22:22   #6  |  Link
dracore
Registered User
 
Join Date: Oct 2006
Posts: 58
Yes, AV1 compression is very good and HDR support is a big plus.
If you want the best possible quality for your archive, I recommend the AOM-AV1.
It will be slower, but it's worth it.
The SVT-AV1 isn't bad either; it's just a good compromise between speed and quality.
Either way, it will be exciting to see how these encoders continue to develop and improve.
dracore 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 00:22.


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