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31st May 2024, 09:36 | #1 | Link |
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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 |
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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.
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7th July 2024, 10:03 | #3 | Link |
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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 Code:
ffmpeg -i INPUT.mp4 -c:v libvvenc -preset fast -qp 25 -period 10 -c:a copy OUTPUT.mp4 |
6th August 2024, 15:24 | #5 | Link | |
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Quote:
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. |
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6th August 2024, 22:22 | #6 | Link |
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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. |
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