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vmaf
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Extreme Video Compression
Netflix did VMAF for this: https://github.com/Netflix/vmaf
It checks a reference video against an encoded video and returns a score representing how close the encoded video appears to the original from a human perspective.
- Netflix/VMAF – Release v3.0.0
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Linux GUI/Frontend for VMAF
Not sure this is the right sub but I'm going to encode my entire BluRay collection in AV1 / NVEC. I'd like to optimize settings with VMAF but would like an ubuntu/debian based GUI to work with.
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Does anybody run libvmaf on your output as a validation check?
VMAF for anybody that doesn't know quantifies the quality difference between a source and modified video.
- How do you guys visually compare clips?
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reduce video filesize
Netflix even has a method to measure perceivable quality difference. A little while ago I used this tool to calculate this.
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How did my silly little After Effects filter reduce the file to 10% its size? The footage wasn't raw or 10-bit or anything, and I rendered it out at basically the same resolution (cropping aside). How did I do this????
Well you can use something like https://mediaarea.net/en/MediaInfo to look at the files and https://github.com/Netflix/vmaf to see if there is no loss.
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[HUB] Reddit Users Expose Steve: DLSS vs. FSR Performance, GeForce RTX 4070 Ti vs. Radeon RX 7900 XT
Vmaf exists
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4:2:0 10-bit HEVC vs 4:2:2 10-bit AVC codecs higher quality? (S5II, GH6)
You can try some tests https://github.com/Netflix/vmaf
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Unusually good compression ratio - Sanity Check
You can try VMAF as well (which ffmpeg supports). It's normally recommended to make a lossless copy first as a baseline too
I
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Anime Encoding Guide for X265 (HEVC) & AAC/Opus (& Why to Never Use FLAC) (2019)
I recall some recent codec or project that addressed anime compression, something similar to the following:
https://github.com/nikitaa30/I
What are some alternatives?
Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding
staxrip - 🎞 Video encoding GUI for Windows.
FFmpeg-Builds
FFmpeg-Builds - FFmpeg Builds for yt-dlp
ffmpeg-debug-qp - FFmpeg Debug Script for QP Values
ssimulacra2 - SSIMULACRA 2. Perceptual metric.
Pulsar-VMAF - Hardware-based VMAF
ffmpeg-quality-metrics - Calculate quality metrics with FFmpeg (SSIM, PSNR, VMAF, VIF)
nmkoder - Media encoding, muxing, analysis toolkit for Windows
NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1)
videobench - VMAF PSNR Bitrate Analyzer