ab-av1
ffmpeg-compare
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ab-av1 | ffmpeg-compare | |
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19 | 4 | |
327 | 15 | |
- | - | |
7.5 | 0.0 | |
19 days ago | over 4 years ago | |
Rust | Shell | |
MIT License | GNU General Public License v3.0 or later |
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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.
ffmpeg-compare
- Easily identifying the CRF required to achieve a target VMAF
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Is there a recommended ffmpeg command cookbook with common / high quality scripts?
Netflix’s vmaf AI based comparison engine is in ffmpeg now by default I think. You can take some snippets of your video and run some compressions and compare them to the original to see how they compare. I threw together a script a few years ago to automate that process a bit https://github.com/Torpus/ffmpeg-compare It’s pretty old so not sure it still works but could give you some ideas on how to implement something similar.
What are some alternatives?
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
SVT-AV1
NotEnoughAV1Encodes-Qt - Linux GUI for AV1 Encoders
ffmpeg-quality-metrics - Calculate quality metrics with FFmpeg (SSIM, PSNR, VMAF, VIF)
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
redb - An embedded key-value database in pure Rust
encoder-benchmark - A tool to benchmark your hardware's real-time video encoding capabilities.
ffmprovisr - Repository of useful FFmpeg commands for archivists!
sled - the champagne of beta embedded databases
FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg.exe
awesome-video - A curated list of awesome streaming video tools, frameworks, libraries, and learning resources.
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