Real-Time Video Processing with the WebCodecs API

A production-focused guide to building WebCodecs pipelines from a MediaStreamTrackProcessor, a TransformStream for per-frame work, and a VideoTrackGenerator to rebuild a track. It stresses calling frame.close() on every VideoFrame to avoid stuttering, handling silently dropped frames under backpressure, and worker-boundary ownership races, with browser support noted as Chrome 94+, Firefox 130+, and Safari 16.4+ for core features (Safari 18+ for MediaStreamTrackProcessor).