A small, dependency-free (pure standard-library) Python tool that turns a grid of measured (resolution, bitrate, VMAF) points into a per-title, quality-driven bitrate ladder — the measurement side of per-title encoding. It builds the convex hull from the grid (at each bitrate, keep the resolution with the highest VMAF), sets the top rung as the lowest bitrate reaching a target score (default VMAF 95; the article's 93-95 band), spaces the lower rungs by a bitrate factor (default 1.66x, the Apple
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The handbook · 7 volumes
Fora Soft Video Engineering Handbook
This quality-target ladder builder turns a grid of measured resolution, bitrate and VMAF points into a per-title bitrate ladder through the convex hull. Our seven-volume handbook covers the video stack; start with Volume 1 for quality metrics and encoder tuning, then Volume 3 for ABR ladders and rung selection. Written by Nikolay Sapunov, CEO at Fora Soft.
Building per-title bitrate ladders and want them driven by measured quality?
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