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Scalable SSIM estimation from PSNR for per-title and context adaptive encoding workflows

Tech Papers 2026: This paper proposes ApproxSSIMate, a low-complexity method for estimating SSIM from PSNR combined with reference-sequence statistics.

Abstract 

Modern streaming pipelines run hundreds of candidates encodes per asset to support per-title encoding, shot-based optimisation, and context-adaptive ABR ladder construction. These techniques have moved perceptual quality metrics into the critical path: SSIM and VMAF now guide encoding decisions rather than passively monitor them...

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