Remotion Layout Debugging
Overview
This skill enables Claude to diagnose and resolve layout instability issues in Remotion projects.
The workflow focuses on:
- fixing text jumping
- preventing layout shifts
- stabilizing animated elements
- debugging resizing issues
- preserving visual consistency
- maintaining deterministic rendering behavior
The goal is to ensure animations remain visually stable and professional even when dynamic content changes during playback.
Setup
Before starting:
Install Node.js: https://nodejs.org
Verify installation:
node -v
npm -v
- Create a Remotion project:
npm init video
- Start development server:
npm run dev
- Open the project in VS Code.
Recommended tools:
- VS Code
- Remotion Preview
- React knowledge
- Browser DevTools
Recommended extensions:
- ES7 React snippets
- Prettier
Inputs Required
- Remotion project
- Reproducible layout issue
- Animated components
- Text or subtitle systems
- Video scenes with unstable positioning
Optional:
- Motion references
- Existing animation logic
- Scene timing information
When to Use This Skill
Use this skill when:
- text jumps during animation
- subtitles resize unpredictably
- animated cards shift position
- layouts become unstable during typing effects
- scene elements flicker or move unexpectedly
- rendering differs between frames
- dynamic content changes cause instability
When NOT to Use
Do NOT use this skill for:
- static layouts
- non-animated UI debugging
- backend issues
- traditional CSS-only workflows
- non-visual rendering problems
Example Use Case
Fix a subtitle card that jumps vertically while text types onto the screen.
Claude should:
- Detect layout instability
- Identify resizing caused by dynamic text length
- Render invisible full text to preserve container height
- Overlay animated text separately
- Keep positioning stable across frames
- Validate rendering consistency
Final result should:
- eliminate layout jumping
- preserve smooth animation
- maintain stable positioning
- improve readability
- render consistently frame-by-frame
Core Layout Stability Principles
1. Prevent Dynamic Resizing
One of the most common causes of layout instability is dynamic resizing during animation.
Examples:
- typing effects changing container height
- subtitles expanding unexpectedly
- animated cards resizing between frames
Claude should proactively detect:
- changing dimensions
- unstable containers
- variable spacing
- reflow-triggering animations
2. Preserve Stable Layout Dimensions
Stable containers prevent visual jumping.
Recommended strategy:
- render invisible full text in the background
- preserve maximum container dimensions
- overlay animated content separately
Example approach:
Invisible Full Text
↓
Animated Visible Text Overlay
This ensures:
- stable height
- stable width
- predictable positioning
- smooth animation
3. Separate Layout From Animation
Animation logic should not directly control layout structure.
Preferred approach:
- keep layout dimensions fixed
- animate overlays independently
- isolate transforms from containers
Avoid:
- resizing parent containers during animation
- dynamically changing layout flow
- uncontrolled scaling systems
4. Keep Motion Deterministic
All motion should remain:
- frame-based
- predictable
- synchronized
- render-safe
Preferred systems:
useCurrentFrame()spring()- interpolation
Avoid:
- browser timing systems
- uncontrolled transitions
- layout-dependent animations
5. Validate Frame-by-Frame
Layout issues are often invisible during fast playback.
Claude should inspect:
- individual frames
- subtitle positioning
- container dimensions
- motion synchronization
Frame-level validation improves:
- rendering consistency
- visual polish
- animation stability
Workflow
1. Reproduce the Issue
Start by reproducing the layout instability consistently.
Identify:
- when the jump occurs
- which component causes instability
- whether text or motion triggers the issue
Typical symptoms:
- text jumping
- subtitle flickering
- resizing cards
- unstable transitions
2. Diagnose the Root Cause
Check for:
- changing text dimensions
- dynamic container resizing
- layout reflow
- unstable transforms
- incorrect positioning logic
Determine whether:
- animation affects layout
- layout affects animation
- timing creates instability
3. Stabilize Container Dimensions
Preserve stable layout sizing.
Recommended fix:
- render invisible full text
- maintain fixed dimensions
- overlay animated content separately
This prevents:
- vertical jumps
- horizontal resizing
- text reflow
- unstable spacing
4. Isolate Animation Layers
Separate:
- layout structure
- animation overlays
- transforms
- subtitle motion
Example structure:
Stable Container
↓
Invisible Placeholder
↓
Animated Text Overlay
This improves:
- render stability
- debugging clarity
- motion consistency
5. Validate Motion Systems
Check:
- frame synchronization
- spring behavior
- interpolation ranges
- transform stability
Ensure:
- movement remains smooth
- positioning stays consistent
- animation timing remains deterministic
6. Render & Validate
Before export validate:
- frame-by-frame consistency
- subtitle readability
- stable positioning
- smooth animation
- absence of layout jumping
Render output:
npm run build
or:
npx remotion render
Output Expectations
The final output should include:
- stable animated layouts
- smooth subtitle behavior
- deterministic rendering
- fixed positioning consistency
- production-ready animation quality
The workflow itself should remain:
- reusable
- modular
- easy to debug
- render-safe
Execution Strategy (for AI agents)
The agent should:
- Detect instability proactively
- Identify whether layout or animation causes the issue
- Preserve stable container dimensions
- Separate layout structure from animation overlays
- Validate rendering frame-by-frame
- Ensure deterministic rendering behavior
The workflow should optimize for:
- layout stability
- rendering consistency
- readability
- smooth motion
- professional visual quality
Best Practices
- Keep container dimensions stable
- Avoid layout-dependent animation
- Use invisible placeholders when needed
- Separate overlays from layout structure
- Validate animations frame-by-frame
- Preserve subtitle readability
- Keep transforms isolated from layout flow
Notes
- Most Remotion layout issues come from dynamic resizing
- Stable layouts dramatically improve perceived quality
- Invisible placeholder rendering is often the cleanest solution
- Frame-level validation catches issues early
- Deterministic layouts improve rendering reliability