Stitch to Remotion Walkthrough Videos

Overview

Prerequisites

• Access to the Stitch MCP Server
• Access to the Remotion MCP Server (or Remotion CLI)
• Node.js and npm installed
• A Stitch project with designed screens

• Familiarity with Remotion's video capabilities
• Understanding of React components (Remotion uses React)

Retrieval and Networking

Step 1: Discover Available MCP Servers

list_tools

• Stitch MCP: Look for

  stitch:

  or

  mcp_stitch:

  prefix
• Remotion MCP: Look for

  remotion:

  or

  mcp_remotion:

  prefix

Step 2: Retrieve Stitch Project Information

1. Project lookup (if Project ID is not provided):
   • Call

     [stitch_prefix]:list_projects

     with

     filter: "view=owned"

   • Identify target project by title (e.g., "Calculator App")
   • Extract Project ID from

     name

     field (e.g.,

     projects/13534454087919359824

     )
2. Screen retrieval:
   • Call

     [stitch_prefix]:list_screens

     with the project ID (numeric only)
   • Review screen titles to identify all screens for the walkthrough
   • Extract Screen IDs from each screen's

     name

     field
3. Screen metadata fetch: For each screen:
   • Call

     [stitch_prefix]:get_screen

     with

     projectId

     and

     screenId

   • Retrieve:

     • screenshot.downloadUrl

       — Visual asset for the video

     • htmlCode.downloadUrl

       — Optional: for extracting text/content

     • width

       ,

       height

       — Screen dimensions for proper scaling
     • Screen title and description for text overlays
4. Asset download:
   • Use

     web_fetch

     or

     Bash

     with

     curl

     to download screenshots
   • Save to a staging directory:

     assets/screens/{screen-name}.png

   • Organize assets in order of the intended walkthrough flow

Step 3: Set Up Remotion Project

1. Check for existing Remotion project:
   • Look for

     remotion.config.ts

     or

     package.json

     with Remotion dependencies
   • If exists, use the existing project structure
2. Create new Remotion project (if needed):
   bash

   npm create video@latest -- --blank

   • Choose TypeScript template
   • Set up in a dedicated

     video/

     directory
3. Install dependencies:
   bash

   cd video
   npm install @remotion/transitions @remotion/animated-emoji

Video Composition Strategy

Architecture

1. ScreenSlide.tsx

   — Individual screen display component
   • Props:

     imageSrc

     ,

     title

     ,

     description

     ,

     width

     ,

     height

   • Features: Zoom-in animation, fade transitions
   • Duration: Configurable (default 3-5 seconds per screen)

2. WalkthroughComposition.tsx

   — Main video composition
   • Sequences multiple

     ScreenSlide

     components
   • Handles transitions between screens
   • Adds text overlays and annotations

3. config.ts

   — Video configuration
   • Frame rate (default: 30 fps)
   • Video dimensions (match Stitch screen dimensions or scale appropriately)
   • Total duration calculation

Transition Effects

@remotion/transitions

• Fade: Smooth cross-fade between screens
  tsx

  import {fade} from '@remotion/transitions/fade';

• Slide: Directional slide transitions
  tsx

  import {slide} from '@remotion/transitions/slide';

• Zoom: Zoom in/out effects for emphasis
  • Use

    spring()

    animation for smooth zoom
  • Apply to important UI elements

Text Overlays

1. Screen titles: Display at the top or bottom of each frame
2. Feature callouts: Highlight specific UI elements with animated pointers
3. Descriptions: Fade in descriptive text for each screen
4. Progress indicator: Show current screen position in walkthrough

Execution Steps

Step 1: Gather Screen Assets

1. Identify target Stitch project
2. List all screens in the project
3. Download screenshots for each screen
4. Organize in order of walkthrough flow
5. Create a manifest file (

   screens.json

   ):

{
  "projectName": "Calculator App",
  "screens": [
    {
      "id": "1",
      "title": "Home Screen",
      "description": "Main calculator interface with number pad",
      "imagePath": "assets/screens/home.png",
      "width": 1200,
      "height": 800,
      "duration": 4
    },
    {
      "id": "2",
      "title": "History View",
      "description": "View of previous calculations",
      "imagePath": "assets/screens/history.png",
      "width": 1200,
      "height": 800,
      "duration": 3
    }
  ]
}

Step 2: Generate Remotion Components

1. Create

   ScreenSlide.tsx

   :
   • Use

     useCurrentFrame()

     and

     spring()

     for animations
   • Implement zoom and fade effects
   • Add text overlays with proper timing
2. Create

   WalkthroughComposition.tsx

   :
   • Import screen manifest
   • Sequence screens with

     <Sequence>

     components
   • Apply transitions between screens
   • Calculate proper timing and offsets
3. Update

   remotion.config.ts

   :
   • Set composition ID
   • Configure video dimensions
   • Set frame rate and duration

• Use

  resources/screen-slide-template.tsx

  as starting point
• Follow

  resources/composition-checklist.md

  for completeness
• Review examples in

  examples/walkthrough/

  directory

Step 3: Preview and Refine

1. Start Remotion Studio:
   bash

   npm run dev

   • Opens browser-based preview
   • Allows real-time editing and refinement
2. Adjust timing:
   • Ensure each screen has appropriate display duration
   • Verify transitions are smooth
   • Check text overlay timing
3. Fine-tune animations:
   • Adjust spring configurations for zoom effects
   • Modify easing functions for transitions
   • Ensure text is readable at all times

Step 4: Render Video

1. Render using Remotion CLI:
   bash

   npx remotion render WalkthroughComposition output.mp4

2. Alternative: Use Remotion MCP (if available):
   • Call

     [remotion_prefix]:render

     with composition details
   • Specify output format (MP4, WebM, etc.)
3. Optimization options:
   • Set quality level (

     --quality

     )
   • Configure codec (

     --codec h264

     or

     h265

     )
   • Enable parallel rendering (

     --concurrency

     )

Advanced Features

Interactive Hotspots

import {interpolate, useCurrentFrame} from 'remotion';

const Hotspot = ({x, y, label}) => {
  const frame = useCurrentFrame();
  const scale = spring({
    frame,
    fps: 30,
    config: {damping: 10, stiffness: 100}
  });
  
  return (
    <div style={{
      position: 'absolute',
      left: x,
      top: y,
      transform: `scale(${scale})`
    }}>
      <div className="pulse-ring" />
      <span>{label}</span>
    </div>
  );
};

Voiceover Integration

1. Generate voiceover script from screen descriptions
2. Use text-to-speech or record audio
3. Import audio into Remotion with

   <Audio>

   component
4. Sync screen timing with voiceover pacing

Dynamic Text Extraction

1. Download

   htmlCode.downloadUrl

   for each screen
2. Parse HTML to extract key text elements (headings, buttons, labels)
3. Generate automatic callouts for important UI elements
4. Add to composition as timed text overlays

File Structure

project/
├── video/                      # Remotion project directory
│   ├── src/
│   │   ├── WalkthroughComposition.tsx
│   │   ├── ScreenSlide.tsx
│   │   ├── components/
│   │   │   ├── Hotspot.tsx
│   │   │   └── TextOverlay.tsx
│   │   └── Root.tsx
│   ├── public/
│   │   └── assets/
│   │       └── screens/        # Downloaded Stitch screenshots
│   │           ├── home.png
│   │           └── history.png
│   ├── remotion.config.ts
│   └── package.json
├── screens.json                # Screen manifest
└── output.mp4                  # Rendered video

Integration with Remotion Skills

• Repository: https://github.com/remotion-dev/remotion/tree/main/packages/skills
• Installation:

  npx skills add remotion-dev/skills

• Animation timing and easing
• Composition architecture patterns
• Performance optimization
• Audio synchronization

Common Patterns

Pattern 1: Simple Slide Show

• 3-5 seconds per screen
• Cross-fade transitions
• Bottom text overlay with screen title
• Progress bar at top

Pattern 2: Feature Highlight

• Zoom into specific regions
• Animated circles/arrows pointing to features
• Slow-motion emphasis on key interactions
• Side-by-side before/after comparisons

Pattern 3: User Flow

• Sequential screen flow with directional slides
• Numbered steps overlay
• Highlight user actions (clicks, taps)
• Connect screens with animated paths

Troubleshooting

screenshot.downloadUrl

Best Practices

1. Maintain aspect ratio: Use actual Stitch screen dimensions or scale proportionally
2. Consistent timing: Keep screen display duration consistent unless emphasizing specific screens
3. Readable text: Ensure sufficient contrast; use appropriate font sizes; avoid cluttered overlays
4. Smooth transitions: Use spring animations for natural motion; avoid jarring cuts
5. Preview thoroughly: Always preview in Remotion Studio before final render
6. Optimize assets: Compress images appropriately; use efficient formats (PNG for UI, JPG for photos)

Example Usage

Look up the screens in my Stitch project "Calculator App" and build a remotion video 
that shows a walkthrough of the screens.

1. List Stitch projects → Find "Calculator App" → Extract project ID
2. List screens in project → Identify all screens (Home, History, Settings)
3. Download screenshots for each screen → Save to

   assets/screens/

4. Create

   screens.json

   manifest with screen metadata
5. Generate Remotion components (

   ScreenSlide.tsx

   ,

   WalkthroughComposition.tsx

   )
6. Preview in Remotion Studio → Refine timing and transitions
7. Render final video →

   calculator-walkthrough.mp4

8. Report completion with video preview link

Tips for Success

• Start simple: Begin with basic fade transitions before adding complex animations
• Follow Remotion patterns: Leverage Remotion's official skills and documentation
• Use manifest files: Keep screen data organized in JSON for easy updates
• Preview frequently: Use Remotion Studio to catch issues early
• Consider accessibility: Add captions; ensure text is readable; use clear visuals
• Optimize for platform: Match video dimensions to target platform (YouTube, social media, etc.)

References

• Stitch Documentation: https://stitch.withgoogle.com/docs/
• Remotion Documentation: https://www.remotion.dev/docs/
• Remotion Skills: https://www.remotion.dev/docs/ai/skills
• Remotion MCP: https://www.remotion.dev/docs/ai/mcp
• Remotion Transitions: https://www.remotion.dev/docs/transitions