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viser v0.8.0

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@github-actions github-actions released this 16 Jun 09:56
· 29 commits to main since this release
v0.8.0
0c78a42

Faster analysis: choose a cheaper quality metric and expose subsampling controls.

Added

  • --metric vmaf|psnr|ssim on per-title analyze and per-shot analyze —
    selects the quality metric that drives hull/ladder selection. PSNR and SSIM use
    FFmpeg's native filters and bypass libvmaf's expensive feature extraction
    (ADM/VIF/motion), running ~10-20x faster per measurement for quick iteration.
    The chosen metric is recorded as a top-level metric field in the analysis JSON
    and labels the result tables accordingly.
  • per-shot analyze --subsample — exposes quality-metric frame subsampling
    (every Nth frame; default 5), previously only available on per-title analyze.
  • per-shot analyze --parallel — caps concurrent shot analyses (0 = auto).
  • Native PSNR/SSIM measurement path in viser-quality::measure — when only
    PSNR and/or SSIM are requested, measurement uses FFmpeg's psnr/ssim filters
    instead of libvmaf, honoring subsample via frame decimation.
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