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community
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What's the best source/course to learn AV1 encoding with all it's parameters?
GitHub :: Advanced Command Line Options
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AV1 Video Codec
cpu-used is (somewhat confusingly) not for how many threads it uses, but how good the quality of the video should be in a scale from 0 to 9, where 0 is best quality and slowest, and 9 is worst quality and fastest. Very similar to how -preset was used for x264.
https://github.com/AOMediaCodec/community/wiki#how-to-make-e... explains the different settings that most change the speed of encoding.
SVT-AV1
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Any recent comparison between the encoders, specially rav1e and SVT-AV1?
The docs mention that the unit for this option is in "frames" (not "seconds").
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SVT-AV1 git: Neon optimizations across all processes - part2
From the pull request:
- SVT-AV1 git: Updating encoding parameters during the encoding session (RTC only)
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Guide to Adopting AV1 Encoding
In these tests SVT-AV1 beats x265 on quality:
- FullHD: http://compression.ru/video/codec_comparison/2022/main_repor...
- FullHD 10-bit: http://compression.ru/video/codec_comparison/2022/10_bit_rep...
- 4K: http://compression.ru/video/codec_comparison/2022/4k_report....
SVT-AV1 has seen a number of speed ups in recent releases:
https://gitlab.com/AOMediaCodec/SVT-AV1/-/releases
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10-bit and 4:2:2 Chroma Subsampling support for AV1?
I don't see this options under the "Advanced features" like for H.265/HEVC (for example). Also, adding "-input-depth 10" manually to the command line doesn't work (it doesn't recognize the parameter, despite it clearly being written here as one of them).
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Does Handbrake publish AV1 documents?
Docs for SVT-AV1 at https://gitlab.com/AOMediaCodec/SVT-AV1/-/tree/master/Docs
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[SVT-AV1 Git] The experimental SSIM RD tune in SVT-AV1 has been added to mainline
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.
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What's the status of AV1 encoding on ARM?
SVT-AV1 has no NEON.
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My AV1 testing (Part 3)
I used the precompiled FFmpeg from SVT-AV1's git: https://gitlab.com/AOMediaCodec/SVT-AV1/-/jobs/4540276837
- SVT-AV1 1.6.0 windows x64 binaries ?
What are some alternatives?
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
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
av1-spec - AV1 Bitstream & Decoding Process Specification
rav1e - The fastest and safest AV1 encoder.
FFmpeg-Builds
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.
media-autobuild_suite - This Windows Batchscript helps setup a Mingw-w64 compiler environment for building ffmpeg and other media tools under Windows.
ab-av1 - AV1 re-encoding using ffmpeg, svt-av1 & vmaf.
QSVEnc - QSVによる高速エンコードの性能実験
FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!
ffmpeg-windows-build-helpers - Helper script for cross compiling some media tools for windows, like customizable ffmpeg.exe (with or without non-free components, etc), and some other bonuses like mplayer, mp4box, mxf, etc.