ab-av1
Av1an
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ab-av1 | Av1an | |
---|---|---|
19 | 65 | |
327 | 1,326 | |
- | - | |
7.5 | 7.3 | |
20 days ago | 21 days ago | |
Rust | Rust | |
MIT License | GNU General Public License v3.0 only |
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ab-av1
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AV1 tool to auto compress old video files for archive
ab-av1 auto-encode with a VMAF quality target of 97-98 + a script for the deletion of files sounds like what you need.
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Automatic choose encode settings?
ab-av1
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RFC: redb (embedded key-value store) nearing version 1.0
My case is ab-av1, a cli for encoding videos. The local db stores cached vmaf analysis.
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A little script to parse large libraries to AV1, if you're interested
If the goal is space saving and a consistent visual quality rather than just having a library as AV1 for its own sake, I'd use ab-av1. Not sure how (or if) it'll handle the Opus audio channels cases, but bugs can be filed.
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Looking for some good AV1 testing and comparison results.
Use this tool and you will get excellent results https://github.com/alexheretic/ab-av1 calculates and converts automatically calculates the vmaf and crf properly
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did I fail at preserving dvds? mpeg2 vs h264 vs av1
I like using NotEnoughAV1Encodes. There's also Av1an, and ab-av1.
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CRF value for efficient 4k encoding?
I just let ab-av1 automatically find a CRF that hits a VMAF target on a few samples.
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Easily identifying the CRF required to achieve a target VMAF
The team who produced ab-av1 0.4.0 https://github.com/alexheretic/ab-av1 have recently extended the crf-search mechanism to support non av1 codecs. This is a cool tool that allows you to run a single command to estimate what CRF is required to target a particular VMAF. It was originally written for AV1, but has now been extended for other codecs https://alexheretic.github.io/posts/ab-av1-2/ including x264 & x265. It takes the pain way from running multiple VMAF passes.
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AOM or SVT-AV1 on 5950X? video is 8K 60fps 60Mbit/s
Thank you! I also found https://github.com/alexheretic/ab-av1 which can do a binary search to find the 'cheapest' CRF to achieve certain quality (VMAF)
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Quality loss when you encode
If you want to mess with AV1, then there's AV1an that has a feature to target a VMAF. ab-av1 has their 'crf-search.' Although, most of the time I just use NotEnoughAV1Encodes with settings I like. Although, granted AV1 has less compatibility and it takes forever.
Av1an
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Guide to Adopting AV1 Encoding
The hardware encoders are very fast and generally better than x264 (but not by as much as you'd think with the x264 slow preset).
In addition, there are threaded AV1 encoders you may be overlooking, like SVT-AV1. For non-realtime, my favorite is av1an, which also yields better quality than is possible from aomenc: https://github.com/master-of-zen/Av1an
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Automatic choose encode settings?
Basically Av1an.
There's also Av1an as suggested by someone else. It's going to produce more efficient encodes because it uses chunk-based encoding to reach the required VMAF for every single chunk, but this is also slower because every chunk will be re-encoded until the VMAF target is reached. It's also a PITA to compile, has a long list of bugs, and isn't very actively developed. One of the long-standing issues is that frames have a tendency to go missing during splitting, which IME is going to keep happening when the input files aren't standardized. And thus the recommendation is to transcode the input to lossless first, which is just completely unsustainable.
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VMAF is confusing me
Have you seen Av1an? It's supposed to encode to a target VMAF.
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[Guide] Installing av1an on Ubuntu 22.04
git clone https://github.com/master-of-zen/Av1an cd Av1an cargo build --release sudo ldconfig
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AV1 Encoder development series Part 1: working on rav1e in a different, better and more forward manner
Here's a couple of pages that cover the basics of aomenc: https://github.com/master-of-zen/Av1an/blob/master/docs/Encoders/aomenc.md https://gist.github.com/shssoichiro/a46ff01db70243c1719479f6518ea34d For more of a deep dive into settings, you can join the discord, lots of people share their settings and you can see what's working well for others.
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Should I recompress video I shot with mobile?
Av1an can even aim for a target quality.
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did I fail at preserving dvds? mpeg2 vs h264 vs av1
I like using NotEnoughAV1Encodes. There's also Av1an, and ab-av1.
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Currently impossible to use av1an on Windows?
In your case, I'd get one of the [nightly builds](https://github.com/master-of-zen/Av1an/releases/tag/latest) of Av1an. They should work with ffmpeg 5.
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Guide how to use av1an ?
1.9 release notes with Dynamic Progress Bar, Batch Encode, Config files https://github.com/master-of-zen/Av1an/releases/tag/1.9
What are some alternatives?
HandBrake - HandBrake's main development repository
SVT-AV1
FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!
NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1)
FFmpeg-Builds
nmkoder - Media encoding, muxing, analysis toolkit for Windows
vmaf - Perceptual video quality assessment based on multi-method fusion.
FFmpeg-Builds - FFmpeg Builds for yt-dlp
digital_video_introduction - A hands-on introduction to video technology: image, video, codec (av1, vp9, h265) and more (ffmpeg encoding). Translations: 🇺🇸 🇨🇳 🇯🇵 🇮🇹 🇰🇷 🇷🇺 🇧🇷 🇪🇸
ffmpeg-quality-metrics - Calculate quality metrics with FFmpeg (SSIM, PSNR, VMAF, VIF)
caniuse - Raw browser/feature support data from caniuse.com