Remotion Core

Remotion renders video from React. A composition is a React component whose output is a pure function of frame index — the same frame always produces the same pixels. Every animation must be derived from useCurrentFrame(), never from Date.now(), Math.random(), or any external mutable state.

This skill is the technical contract — how to build one Remotion project. The body below is the build guide; per-topic detail lives in references/ (index next), read on demand.