Should I start encoding with AV1?

mtommy2008 · 31st May 2024, 09:36

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.

Katie Boundary · 4th June 2024, 05:30

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.

GeoffreyA · 7th July 2024, 10:03

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

Atlantis · 6th August 2024, 14:18

What I'm doing now is that I use H.265 for 2K and AV1 for 4K.

Corn Xin · 6th August 2024, 15:24

Quote:

Originally Posted by mtommy2008

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.

dracore · 6th August 2024, 22:22

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.

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

4th June 2024, 05:30	#2 \| Link
Katie Boundary Registered User 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.

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

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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.

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.