Stitch to Remotion Walkthrough Videos

Constraint: Only use this skill when the user explicitly mentions "Stitch" and walkthrough video or Remotion.

You are a video production specialist creating walkthrough videos from Stitch app designs. Combine Stitch MCP (or stitch-mcp-list-projects, stitch-mcp-list-screens, stitch-mcp-get-screen) to get screens with Remotion for programmatic video: transitions, zoom, text overlays.

Prerequisites

• Stitch MCP Server (https://stitch.withgoogle.com/docs/mcp/guide/)
• Remotion MCP or Remotion CLI; Node.js and npm
• A Stitch project with designed screens

Retrieval and Networking

1. Discover prefixes: Run list_tools for Stitch and Remotion MCP prefixes.
2. Project/screen lookup: Use [stitch_prefix]:list_projects (filter view=owned), then [stitch_prefix]:list_screens with projectId; identify screens for the walkthrough.
3. Screen metadata: For each screen call [stitch_prefix]:get_screen; get screenshot.downloadUrl, htmlCode.downloadUrl, width, height, title, description.
4. Asset download: Download screenshots (e.g. via web_fetch or Bash curl); save to assets/screens/{screen-name}.png in walkthrough order.
5. Manifest: Create screens.json with projectName, screens array (id, title, description, imagePath, width, height, duration).

Video Composition Strategy

• ScreenSlide.tsx: Single screen (imageSrc, title, description, width, height); zoom/fade; configurable duration (e.g. 3–5 s).
• WalkthroughComposition.tsx: Sequence of ScreenSlides; transitions (fade/slide from @remotion/transitions); text overlays.
• Config: Frame rate (e.g. 30 fps), dimensions (match Stitch or scale), total duration.

Use Remotion spring() for zoom; use @remotion/transitions (fade, slide) between screens.

Common Patterns (align with official)

• Simple slide show: 3–5 s per screen, cross-fade, bottom text overlay (screen title), progress bar at top.
• Feature highlight: Zoom into regions; animated circles/arrows; slow-motion on key interactions; before/after comparisons.
• User flow: Sequential screens with directional slides; numbered steps overlay; highlight actions (clicks, taps); connect screens with animated paths.

Optional: Voiceover and dynamic text

• Voiceover: Generate script from screen descriptions; use TTS or recorded audio; sync screen timing with narration.
• Dynamic text: Download htmlCode.downloadUrl per screen; parse HTML for headings/buttons/labels; generate timed callouts in the composition.

Execution Steps

1. Gather assets: List Stitch project → list screens → get_screen for each → download screenshots → build screens.json.
2. Remotion setup: Use existing Remotion project or npm create video@latest -- --blank in e.g. video/; install @remotion/transitions etc.
3. Build components: ScreenSlide.tsx (useCurrentFrame, spring, zoom/fade); WalkthroughComposition.tsx (Sequence, manifest); update remotion.config.ts.
4. Preview: npm run dev in video/; adjust timing and transitions.
5. Render: npx remotion render WalkthroughComposition output.mp4 (or use Remotion MCP if available).

Integration with This Repo

• Stitch screens: Use stitch-mcp-list-projects, stitch-mcp-list-screens, stitch-mcp-get-screen to resolve projectId/screenId and get download URLs.
• Design consistency: If DESIGN.md exists (from stitch-design-md), use screen titles/descriptions for overlay text.

File Structure

project/
├── video/
│   ├── src/
│   │   ├── WalkthroughComposition.tsx
│   │   ├── ScreenSlide.tsx
│   │   └── Root.tsx
│   ├── public/assets/screens/   # Stitch screenshots
│   ├── remotion.config.ts
│   └── package.json
├── screens.json                 # Screen manifest
└── output.mp4

Troubleshooting

Issue	Solution
Blurry screenshots	Use full-resolution screenshot URLs
Misaligned text	Match composition size to screen dimensions
Choppy animations	Increase fps; tune spring damping
Build fails	Check Node/Remotion version; install deps

Keywords

English: Stitch, Remotion, walkthrough, video, screenshots, transitions.
中文关键词： Stitch、Remotion、走查视频、转场。

References

• Remotion docs
• Remotion transitions
• Remotion Skills — animation, composition patterns, performance; install with npx skills add remotion-dev/skills.
• Remotion MCP — programmatic render and preview.
• Stitch MCP
• Examples
• Screens Manifest Example
• Full templates in google-labs-code/stitch-skills.