rav1e
SVT-AV1
DISCONTINUED
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| rav1e | SVT-AV1 | |
|---|---|---|
| 70 | 30 | |
| 3,418 | 1,320 | |
| 0.8% | - | |
| 7.2 | 9.3 | |
| 10 days ago | almost 3 years ago | |
| Assembly | C | |
| BSD 2-clause "Simplified" License | GNU General Public License v3.0 or later |
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.
rav1e
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Learn x86-64 assembly by writing a GUI from scratch
Sure. You'll see it very often in codec implementations. From rav1e, a fast AV1 encoder mostly written in Rust: https://github.com/xiph/rav1e/tree/master/src/x86
Large portions of the algorithm have been translated into assembly for ARM and x86. Shaving even a couple percent off something like motion compensation search will add up to meaningful gains.
Or the current reference implementation of JPEG: https://github.com/libjpeg-turbo/libjpeg-turbo/tree/main/sim...
- Any new Opensource projects in (rust) looking for contributors. I want to start my journey as an OSS contributor.
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A little script to parse large libraries to AV1, if you're interested
You can speed up the sampling process with --vmaf n_subsample=5, which in my experience works more accurately than either 2 or 4, possibly due to this bug/feature present in multiple encoders. You might also need to manually set the number of threads used for VMAF calculation with --vmaf n_threads=16, but YMMV.
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rav1d: a Rust port of dav1d (currently experimental)
That remember me of https://github.com/xiph/rav1e which is an AV1 encoder
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HDR10, HDR10+, Dolby Vision with AV1?
It's getting there.. Initial steps for FFmepg: https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=8444 rav1e: https://github.com/xiph/rav1e/pull/3000
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Use HW hevc encoding for first pass · Issue #2945 · xiph/rav1e
I doubt much will be done on such an exotic feature any time soon. Progress has been slow on rav1e, it's missing a lot of features, and only supports tile threading.
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Announcing Rust 1.67.0
rav1e is quite well maintained, the fix for the lint was merged days after the ilog PR merged. But the 0.5.1 release of rav1e was one year ago, in December 2021, while the ilog rename was end of August 2022. There hadn't been a release though of rav1e until end of November 2022, which was also a semver incompatible one. Users had only 2-ish months of time to get to the new rav1e version without experiencing breakage.
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Symphonia: Audio decoding in safe Rust, now often faster than FFmpeg!
The rav1e encoder for AV1 has more assembly in it than Rust, which also doesn't bode well for memory-safe video codec implementations. But this might change once Rust provides portable and memory-safe explicit SIMD.
- .Webp is the bane of my existence
SVT-AV1
- No library usage documentation for SVT-AV1?
- AOM or SVT-AV1 on 5950X? video is 8K 60fps 60Mbit/s
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SVT-AV1 HDR Encoding (libsvtav1 with ffmpeg)
How about use the parameter "HighDynamicRangeInput" with command line "--enable-hdr 1"? It's from the official page: https://github.com/AOMediaCodec/SVT-AV1/blob/master/Docs/Parameters.md
I used the settings from the official page: https://github.com/AOMediaCodec/SVT-AV1/blob/master/Docs/svt-av1_encoder_user_guide.md
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AV1 Video Codec
I think a more relevant front page link/summary would be that the open-source AV-1 codec has reached the v1.0.0 milestone (18 days ago).
You can see nVidia's hardware support here: https://developer.nvidia.com/video-encode-and-decode-gpu-sup...
The take-away is that nVidia only has hardware support for AV1 on the RTX 3000 Ampere series cards.
Intel supported AV-1 decoding in its Xe-LP GPUs in 2020.
Intel also reached v1.0.0 of its open-source codec 2 weeks age, here: https://github.com/AOMediaCodec/SVT-AV1
I am not aware of any other CPU or GPU that has an AV-1 codec built in.
- Seems like the SVT-AV1 documentation issue #1753 about missing presets explanation is fixed now. And it seems like the preset 0, 1 and 2 are the same thing. Plus tons of other useful encoding guidelines (like how to tune for animation etc.).
- H.264 is magic: a technical walkthrough
- Av1
What are some alternatives?
SVT-AV1
obs-amd-encoder - AMD Advanced Media Framework Encoder Plugin for Open Broadcaster Studio
dav1d - A read-only mirror of dav1d source code repository. The origin is at https://code.videolan.org/videolan/dav1d/
waifu2x - Image Super-Resolution for Anime-Style Art
ffmpeg-build-script - The FFmpeg build script provides an easy way to build a static FFmpeg on OSX and Linux with non-free codecs included.
libavif - libavif - Library for encoding and decoding .avif files
SVT-HEVC - SVT HEVC encoder. Scalable Video Technology (SVT) is a software-based video coding technology that is highly optimized for Intel® Xeon® processors. Using the open source SVT-HEVC encoder, it is possible to spread video encoding processing across multiple Intel® Xeon® processors to achieve a real advantage of processing efficiency.
broot - A new way to see and navigate directory trees : https://dystroy.org/broot
community - libaom User Wiki
kvazaar - An open-source HEVC encoder
SVT-VP9 - SVT VP9 encoder. Scalable Video Technology (SVT) is a software-based video coding technology that is highly optimized for Intel® Xeon® processors. Using the open source SVT-VP9 encoder, it is possible to spread video encoding processing across multiple Intel® Xeon® processors to achieve a real advantage of processing efficiency.