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.
Learn x86-64 assembly by writing a GUI from scratch
11 projects | news.ycombinator.com | 1 Jun 2023
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.
17 projects | /r/rust | 14 May 2023
A little script to parse large libraries to AV1, if you're interested
4 projects | /r/ffmpeg | 15 Apr 2023
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.
rav1d: a Rust port of dav1d (currently experimental)
2 projects | /r/AV1 | 10 Apr 2023
That remember me of https://github.com/xiph/rav1e which is an AV1 encoder
HDR10, HDR10+, Dolby Vision with AV1?
2 projects | /r/AV1 | 1 Mar 2023
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
Use HW hevc encoding for first pass · Issue #2945 · xiph/rav1e
2 projects | /r/AV1 | 26 Jan 2023
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.2 projects | /r/AV1 | 26 Jan 2023
Announcing Rust 1.67.0
10 projects | /r/rust | 26 Jan 2023
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.
Symphonia: Audio decoding in safe Rust, now often faster than FFmpeg!
2 projects | /r/linux | 24 Jan 2023
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
11 projects | /r/DataHoarder | 5 Jan 2023
Guide to Adopting AV1 Encoding
4 projects | news.ycombinator.com | 3 Nov 2023
1. Compile this: https://gitlab.com/AOMediaCodec/SVT-AV1
2. ffmpeg -i infile.mp4 -map 0:v:0 -pix_fmt yuv420p10le -f yuv4mpegpipe -strict -1 - | SvtAv1EncApp -i stdin --preset 6 --keyint 240 --input-depth 10 --crf 30 --rc 0 --passes 1 --film-grain 0 -b infile.ivf
3. ffmpeg -i infile.ivf -i infile.mp4 -map 0:v -map 1:a:0 -c copy outfile.mp44 projects | news.ycombinator.com | 3 Nov 2023
In these tests SVT-AV1 beats x265 on quality:
- FullHD 10-bit: http://compression.ru/video/codec_comparison/2022/10_bit_rep...
SVT-AV1 has seen a number of speed ups in recent releases:
[SVT-AV1 Git] The experimental SSIM RD tune in SVT-AV1 has been added to mainline
Handy list of 1.6.0 of pre-compiled binary's: https://gitlab.com/AOMediaCodec/SVT-AV1/-/pipelines/911865688
I find it interesting that you know the project well enough to get to the pre-compiled binaries page, yet somehow missed that the merge request explictly calls out a VMAF LOSS for the SSIM tune by several percentage points.
What's the status of AV1 encoding on ARM?
3 projects | /r/AV1 | 3 Jul 2023
SVT-AV1 has no NEON.
SVT-AV1 v1.6.0 got released speeding up the higher quality presets by 30-40%
3 projects | /r/AV1 | 21 Jun 2023
Any code experts want to look at the commits between 1.6 and 1.5 and see how this speedup was achieved? https://gitlab.com/AOMediaCodec/SVT-AV1/-/commits/master3 projects | /r/AV1 | 21 Jun 2023
Binaries (incl. FFmpeg) should be here: https://gitlab.com/AOMediaCodec/SVT-AV1/-/pipelines/907000565
[Query] I am using ffmpeg svt-av1 1.4.1 & 1.5.0. Can i change mini-gop size, normally it defaults to 32 when using preset 4. what's the param to change it?
3 projects | /r/AV1 | 20 May 2023
I am on Win10, use it from CLI. The most recent ffmpeg 6.0 will have svt-av1 1.4.1 version , for the newest build 1.5.0 you can get it from https://gitlab.com/AOMediaCodec/SVT-AV1/-/pipelines/850420031, search for ffmpeg.3 projects | /r/AV1 | 20 May 2023
I believe --hierarchical-levels is the setting to change the mini-gop. Most of the time you don't want to change it from the default, though.
What are some alternatives?
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
dav1d - A read-only mirror of dav1d source code repository. The origin is at https://code.videolan.org/videolan/dav1d/
SVT-AV1 - Welcome to the GitHub repo for the SVT-AV1! This repo is set to read-only for archiving purposes. Please join us at https://gitlab.com/AOMediaCodec/SVT-AV1. We look forward to seeing you there
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.
media-autobuild_suite - This Windows Batchscript helps setup a Mingw-w64 compiler environment for building ffmpeg and other media tools under Windows.
libavif - libavif - Library for encoding and decoding .avif files
obs-amd-encoder - AMD Advanced Media Framework Encoder Plugin for Open Broadcaster Studio
broot - A new way to see and navigate directory trees : https://dystroy.org/broot
aom-av1-lavish - A fork of aom-av1-psy, which is a fork of aomenc. Designed to open up the encoder for hyper-tuning and fidelity.
qt-avif-image-plugin - Qt plug-in to allow Qt and KDE based applications to read/write AVIF images.
vvenc - VVenC, the Fraunhofer Versatile Video Encoder