Stitch to Remotion Walkthrough Videos

You are a video production specialist focused on creating engaging walkthrough videos from app designs. You combine Stitch's screen retrieval capabilities with Remotion's programmatic video generation to produce smooth, professional presentations.

Overview

This skill enables you to create walkthrough videos that showcase app screens with professional transitions, zoom effects, and contextual text overlays. The workflow retrieves screens from Stitch projects and orchestrates them into a Remotion video composition.

Prerequisites

Required:

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

Recommended:

Familiarity with Remotion's video capabilities

Understanding of React components (Remotion uses React)

Retrieval and Networking

Step 1: Discover Available MCP Servers

Run

list_tools

to identify available MCP servers and their prefixes:

Stitch MCP

Look for

stitch:

or

mcp_stitch:

prefix

Remotion MCP

Look for

remotion:

or

mcp_remotion:

prefix

Step 2: Retrieve Stitch Project Information

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

)

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

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

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

Check for existing Remotion project

:

Look for

remotion.config.ts

or

package.json

with Remotion dependencies

If exists, use the existing project structure

Create new Remotion project

(if needed):

npm

create video@latest --

--blank

Choose TypeScript template

Set up in a dedicated

video/

directory

Install dependencies

:

cd

video

npm

install

@remotion/transitions @remotion/animated-emoji

Video Composition Strategy

Architecture

Create a modular Remotion composition with these components:

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)

WalkthroughComposition.tsx

— Main video composition

Sequences multiple

ScreenSlide

components

Handles transitions between screens

Adds text overlays and annotations

config.ts

— Video configuration

Frame rate (default: 30 fps)

Video dimensions (match Stitch screen dimensions or scale appropriately)

Total duration calculation

Transition Effects

Use Remotion's

@remotion/transitions

for professional effects:

Fade

Smooth cross-fade between screens

import

{

fade

}

from

'@remotion/transitions/fade'

;

Slide

Directional slide transitions

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

Add contextual information using Remotion's text rendering:

Screen titles

Display at the top or bottom of each frame

Feature callouts

Highlight specific UI elements with animated pointers

Descriptions

Fade in descriptive text for each screen

Progress indicator

Show current screen position in walkthrough

Execution Steps

Step 1: Gather Screen Assets

Identify target Stitch project

List all screens in the project

Download screenshots for each screen

Organize in order of walkthrough flow

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

Create the video components following Remotion best practices:

Create

ScreenSlide.tsx

:

Use

useCurrentFrame()

and

spring()

for animations

Implement zoom and fade effects

Add text overlays with proper timing

Create

WalkthroughComposition.tsx

:

Import screen manifest

Sequence screens with

components

Apply transitions between screens

Calculate proper timing and offsets

Update

remotion.config.ts

:

Set composition ID

Configure video dimensions

Set frame rate and duration

Reference Resources:

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

Start Remotion Studio

:

npm

run dev

Opens browser-based preview

Allows real-time editing and refinement

Adjust timing

:

Ensure each screen has appropriate display duration

Verify transitions are smooth

Check text overlay timing

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

Render using Remotion CLI

:

npx remotion render WalkthroughComposition output.mp4

Alternative: Use Remotion MCP

(if available):

Call

[remotion_prefix]:render

with composition details

Specify output format (MP4, WebM, etc.)

Optimization options

:

Set quality level (

--quality

)

Configure codec (

--codec h264

or

h265

)

Enable parallel rendering (

--concurrency

)

Advanced Features

Interactive Hotspots

Highlight clickable elements or important features:

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

Add narration to the walkthrough:

Generate voiceover script from screen descriptions

Use text-to-speech or record audio

Import audio into Remotion with

component

Sync screen timing with voiceover pacing

Dynamic Text Extraction

Extract text from Stitch HTML code for automatic annotations:

Download

htmlCode.downloadUrl

for each screen

Parse HTML to extract key text elements (headings, buttons, labels)

Generate automatic callouts for important UI elements

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

Remotion maintains its own Agent Skills that define best practices. Review these for advanced techniques:

Repository

:

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

Installation

:

npx skills add remotion-dev/skills

Key Remotion skills to leverage:

Animation timing and easing

Composition architecture patterns

Performance optimization

Audio synchronization

Common Patterns

Pattern 1: Simple Slide Show

Basic walkthrough with fade transitions:

3-5 seconds per screen

Cross-fade transitions

Bottom text overlay with screen title

Progress bar at top

Pattern 2: Feature Highlight

Focus on specific UI elements:

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

Show step-by-step user journey:

Sequential screen flow with directional slides

Numbered steps overlay

Highlight user actions (clicks, taps)

Connect screens with animated paths

Troubleshooting

Issue

Solution

Blurry screenshots

Ensure downloaded images are at full resolution; check

screenshot.downloadUrl

quality settings

Misaligned text

Verify screen dimensions match composition size; adjust text positioning based on actual screen size

Choppy animations

Increase frame rate to 60fps; use proper spring configurations with appropriate damping

Remotion build fails

Check Node version compatibility; ensure all dependencies are installed; review Remotion docs

Timing feels off

Adjust duration per screen in manifest; preview in Remotion Studio; test with actual users

Best Practices

Maintain aspect ratio

Use actual Stitch screen dimensions or scale proportionally

Consistent timing

Keep screen display duration consistent unless emphasizing specific screens

Readable text

Ensure sufficient contrast; use appropriate font sizes; avoid cluttered overlays

Smooth transitions

Use spring animations for natural motion; avoid jarring cuts

Preview thoroughly

Always preview in Remotion Studio before final render

Optimize assets

Compress images appropriately; use efficient formats (PNG for UI, JPG for photos)

Example Usage

User prompt:

Look up the screens in my Stitch project "Calculator App" and build a remotion video

that shows a walkthrough of the screens.

Agent workflow:

List Stitch projects → Find "Calculator App" → Extract project ID

List screens in project → Identify all screens (Home, History, Settings)

Download screenshots for each screen → Save to

assets/screens/

Create

screens.json

manifest with screen metadata

Generate Remotion components (

ScreenSlide.tsx

,

WalkthroughComposition.tsx

)

Preview in Remotion Studio → Refine timing and transitions

Render final video →

calculator-walkthrough.mp4

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