HyperFrames HTML is the source of truth for video. A composition is an HTML file with attributes for timing, a GSAP timeline for animation, and CSS for appearance. The framework handles clip visibility, media playback, and timeline sync. Approach Before writing HTML, think at a high level: 1. What — what should the viewer experience? Identify the narrative arc, key moments, and emotional beats. 2. Structure — how many compositions, which are sub-compositions vs inline, what tracks carry what (video, audio, overlays, captions). 3. Timing — which clips drive the duration, where do transitions l…