A dependency-light Python script (standard library only) that turns raw per-viewer ACR ratings into both numbers a subjective test can report. From a long- or wide-format CSV of per-subject scores for processed clips and their hidden references, it computes each clip's absolute MOS and its ACR-HR Differential MOS using the ITU-T P.910 formula DV = V(PVS) - V(REF) + 5, applies the optional two-point crushing function (crushed_DV = 7*DV/(2+DV) for DV > 5), and reports MOS, DMOS, the standard devia
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The handbook · 7 volumes
Fora Soft Video Engineering Handbook
This script turns raw ACR viewer ratings into MOS and ACR-HR DMOS with the ITU-T P.910 formula, ready for a subjective test report. Our seven-volume handbook covers the whole video stack; start with Volume 1 for compression quality and objective metrics, then Volume 3 for QoE in delivery and Volume 6 for AI models that predict viewer scores. Written by Nikolay Sapunov, CEO at Fora Soft.
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