Ffmpeg Quality

Context: $ARGUMENTS

Reference-vs-distorted (full-reference) objective quality metrics with ffmpeg filters. VMAF is the gold standard for perceptual quality; PSNR and SSIM are older but universally understood. All full-reference filters require the two inputs to be pixel-aligned: same resolution, same frame rate, same pixel format, same length.

Quick start

• Score a transcode vs its source (VMAF): → Step 2 (VMAF recipe)
• Quick PSNR/SSIM number: → Step 2 (PSNR or SSIM recipe)
• Find best CRF for a target VMAF: → Step 3 (rate-distortion sweep)
• Single-file QC (no reference): → Step 2 (blockdetect / blurdetect)
• Parse per-frame results: → Step 3 (JSON/log parsing)

When to use