When you need to evaluate video compression results, this generates an interactive HTML report with PSNR and SSIM metrics plus frame-by-frame visual comparisons. It extracts frames at configurable intervals, calculates quality scores, and packages everything into a self-contained HTML file with slider, side-by-side, and grid viewing modes. The implementation is solid on security (path validation, no shell injection) and handles the annoying edge cases like mismatched durations. Processing takes a couple minutes for typical videos. If you're comparing codecs, testing bitrate settings, or just want quantified proof that your compression didn't wreck the quality, this does the job without requiring you to stitch together FFmpeg commands and spreadsheets yourself.
npx skills add https://github.com/daymade/claude-code-skills --skill video-comparer