Av1an
homebrew-core
Av1an | homebrew-core | |
---|---|---|
65 | 133 | |
1,356 | 13,236 | |
- | 0.6% | |
7.5 | 10.0 | |
15 days ago | 3 days ago | |
Rust | Ruby | |
GNU General Public License v3.0 only | BSD 2-clause "Simplified" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
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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I have a feeling crunchyroll should be using AV1
I specifically used https://github.com/master-of-zen/Av1an with --target-quality 100 to keep the compression as close to lossless as possible (you could probably shave even more size off if you didn’t use near-lossless compression)
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Automatic choose encode settings?
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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Building pc for ffmpeg rendering
i'm still trying to figure out if av1an is the breakthrough to using large CPU counts without losing quality. but it's a ridiculously poorly documented program. i haven't gotten it to run effectively yet. https://github.com/master-of-zen/Av1an
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Codecs for the 4K Era: HEVC, AV1, VVC and Beyond
I don't know about VVC, but I've never seen a recommendation of preset 0 for SVT-AV1. The docs say "presets 1-3 represent extremely high efficiency, for use when encode time is not important and quality/size of the resulting video file is critical". It seems like 0 is the equivalent placebo preset. But if you want AV1 with coding efficiency over all else, IIRC the typical approach is to use av1an to detect scene transitions and farm out parallel encodes with aomenc.
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Automating av1 encoding?
That might be because it doesn't work.
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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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Trying to use av1an without success
Are you using the current version, 0.4.0, from https://github.com/master-of-zen/Av1an/releases
- Av1an - Cross-platform command-line AV1 encoding framework written in Rust
- Av1an: Cross-platform command-line AV1 encoding framework written in Rust
homebrew-core
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Is Go Used in Production more than Rust ?
$ brew info eza ==> eza: stable 0.18.13 (bottled) Modern, maintained replacement for ls https://github.com/eza-community/eza Not installed From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/e/eza.rb License: MIT ==> Dependencies Build: pandoc ✘, pkg-config ✔, rust ✘ Required: libgit2 ✘ ==> Analytics install: 12,792 (30 days), 38,295 (90 days), 68,375 (365 days) install-on-request: 12,790 (30 days), 38,293 (90 days), 68,375 (365 days) build-error: 0 (30 days)
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GitHub Disabled the Xz Repo
Is disabling the compromised repo the typical GitHub policy? My concern is there are monorepos used by package managers, like brew, that are a collection of thousands of projects [1]. These monorepos seem like a prime target for attack and if GitHub disables one because a malicious commit was merged then you've taken down an entire ecosystem.
[1] https://github.com/Homebrew/homebrew-core
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Backdoor in upstream xz/liblzma leading to SSH server compromise
> Correct. Though we do not appear to be affected, this revert was done out of an abundance of caution.
[1] https://github.com/Homebrew/homebrew-core/pull/167512
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Pyenv – lets you easily switch between multiple versions of Python
> right, but now you know even less about your setup when you some roadblock
This is the same with a binary though. And with homebrew, you can't follow patches or flags used or if they change.
- https://github.com/Homebrew/homebrew-core/blob/c964ad7fa53ad...
- Apple curl security incident 12604
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Cowsay
definitely be careful about using fortune in a corporate environment or public space if you don't know what dat files you are using or you might just get an extremely unwelcome surprise.
I was practicing a presentation and used to use "fortune" all the time. I forget exactly what it output but I remember being absolutely mortified about what could have happened if that had popped up during an internal company tech talk.
Kudos to brew for keeping unsuspecting people safe
https://github.com/Homebrew/homebrew-core/commit/3fb3c4c3e55...
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Ask HN: Trouble with a Stargate
I'm sorry to be asking this as I find it a bit silly, but it's blocking my PR [3], so could a few of you star the project on Github [1] to get my PR to run?
[1] https://github.com/laktak/chkbit-py
[2] https://brew.sh
[3] https://github.com/Homebrew/homebrew-core/pull/160018
- Simulate an Ubuntu-like VM inside macOS
- When open source platforms are worse than closed source
- Homebrew Rejects the Idea for Post-Install Notes
What are some alternatives?
HandBrake - HandBrake's main development repository
yt-dlp - A feature-rich command-line audio/video downloader
SVT-AV1
asdf-python - Python plugin for the asdf version manager
FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!
HomeBrew - 🍺 The missing package manager for macOS (or Linux)
NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1)
homebrew-php - :beer: Homebrew tap for PHP 5.6 to 8.4. PHP 8.4 is built nightly.
FFmpeg-Builds
osxfuse - FUSE extends macOS by adding support for user space file systems
ab-av1 - AV1 re-encoding using ffmpeg, svt-av1 & vmaf.
homebrew-cask-versions - 🔢 Alternate versions of Casks