Here's an app I wrote to analyze video quality between different encodes. This was inspired by FFMetrics, but I wanted many more features for comparisons, like advanced statistics and an ability to easily and instantly subjectively A/B compare encoded videos with the source. This makes subjective video quality comparisons so much easier when you can compare on a frame by frame basis and while the video is playing, and instantly switch to the source or a different encoded video.
So I decided to write my own app, and I'd like to share it with all of you. I hope you all enjoy
Let me know what you think, have any issues, or have feature requests.
v1.1 release
- Add VMAF v1 models for standard, phone, 4K, and HFR viewing scenarios.
- Bunch of code refactoring for adding future metrics
Features:
- Calculate VMAF, VMAF NEG, PSNR, SSIM, and XPSNR for multiple test videos.
- VMAF v0.61 and v1 models for standard, phone, 4K, and HFR viewing scenarios.
- Compare metric curves, statistics, and per-frame scores.
- Instant switch between source and encoded video for easy visual A/B comparisons, both frame by frame and during playback, and between different encoded videos.
- Inspect bitrate by frame, second, or GOP without running quality metrics.
- Detect black bars and handle resolution mismatches automatically.
- Use GPU decoding when supported, with independent software fallback per input.
- Calculate two test videos in parallel on many-core CPUs.
- Cache completed results and restore them when matching videos are loaded again.
The app can be downloaded below.
https://github.com/4KVCD/VideoMetricsLab/releases
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Last edited by 4KVCD; 22nd Sep 2026 at 19:46.
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v1.1 is released!
VMAF v0.61 and v1 models for standard, phone, 4K, and HFR viewing scenarios are added along with some internal code refactoring for adding future metrics
https://github.com/4KVCD/VideoMetricsLab/releases/tag/v1.1 -
v1.1.1 released. Needed to fix some quick bugs
- Fixed the metric graph clipping VMAF v1 scores above 100.
- Show the application version in the window title: VideoMetricsLab 1.1.1.
- Omit calculation-library version metadata from non-VMAF cache entries
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