Fastest, Extremist Encoding & Target Quality
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Updated
Oct 22, 2026 - Assembly
Fastest, Extremist Encoding & Target Quality
Calculate VMAF, VMAF NEG, VMAF v1, SSIMULACRA2, Butteraugli and ColorVideo VDP on NVIDIA, AMD and Intel GPUs, alongside PSNR, SSIM and XPSNR. Compare encodes with frame-exact playback that switches between the source and each encode instantly to easily spot differences.
A Library for GPU-accelerated visual fidelity metrics, featuring SSIMULACRA2, Butteraugli and CVVDP.
Open-sourced FFMetrics alternative (slop)
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