RemotionUI Agent

Use this skill when helping users build full Remotion compositions with RemotionUI, not one-off effects.

Hard rules

• Use Remotion docs for framework fundamentals.
• Use RemotionUI for ready-made source components copied into the user's repo.
• Run npx remotion-ui@latest add <component> before importing a component.
• Import from local paths: @/compositions/..., @/remotion/scenes/..., @/remotion/primitives/...
• Never import UI components from the remotion-ui npm package — it ships a CLI only, not a component library. Components are copy-pasted source files, like shadcn/ui.

Remotion animation rules (mandatory)

RemotionUI components are plain Remotion source files. All render-time motion must be driven by Remotion's frame-based primitives, not browser-timing APIs, because output is rendered frame-by-frame server-side, not played back live in a browser:

• Animate with useCurrentFrame() to read the current frame, interpolate() to map frame ranges to value ranges, and spring() for physical, settling motion.
• Sequence timing with <Sequence from={...} durationInFrames={...}> — never setTimeout, setInterval, or requestAnimationFrame.
• Never use CSS transitions, CSS animation / @keyframes, or Tailwind animation utility classes (animate-*, transition-*) for anything that must appear in the rendered video. These run on wall-clock time in a live browser and do not exist frame-accurately during Remotion's server-side render — they will look wrong or be entirely absent in the output.
• It's fine to use Tailwind for static layout/spacing/color classes — the rule only applies to motion/timing.
• Derive all opacity/position/scale/rotation values from interpolate(frame, [inputRange], [outputRange], { extrapolateLeft: "clamp", extrapolateRight: "clamp" }) or spring({ frame, fps, config }), then apply them via inline style (e.g. style={{ opacity, transform: \translateY(${y}px)` }}`).
• Get fps from useVideoConfig(), not a hardcoded constant.

Workflow

1. Understand the video goal (social clip, podcast, data story, product intro).
2. Pick a flagship composition from https://remotionui.com/ai/components.json
3. Run npx remotion-ui doctor if setup looks broken.
4. Install: npx remotion-ui add <name>
5. Import from local source paths and compose in Root.tsx.
6. Customize copied source for brand, timing, and layout — following the animation rules above.

Agent indexes

• Components: https://remotionui.com/ai/components.json
• Per-component detail: https://remotionui.com/ai/components/.json
• Full guide: https://remotionui.com/ai/remotionui-agent.md
• Registry: https://remotionui.com/r/index.json

CLI (agent-friendly)

npx remotion-ui init --existing          # bootstrap remotion-ui.json
npx remotion-ui doctor --json            # diagnose setup
npx remotion-ui search -q caption --json
npx remotion-ui view social-clip --json
npx remotion-ui list --json
npx remotion-ui add social-clip caption-highlight

Existing Remotion projects

cd your-remotion-project
npx remotion-ui init --existing
npx remotion-ui add social-clip
npm run dev

Composition-first defaults

Goal	Flagship composition
9:16 social clip	social-clip
Creator reel	creator-reel
Podcast clip	podcast-clip
Data explainer	data-story
Product launch	intro