Remotion Image & Video Masking

Overview

This skill enables Claude to create advanced masking and layering effects in Remotion where text, images, and videos interact dynamically through composition-based masking techniques.

The workflow focuses on:

• image masking
• video masking
• layered compositions
• text occlusion effects
• depth simulation
• cinematic transitions
• frame-based masking animations

The goal is to create visually engaging scenes where elements appear naturally layered, such as text moving behind foreground objects or videos blending seamlessly through animated masks.

Setup

Before starting:

1. Install Node.js: https://nodejs.org

2. Verify installation:

node -v
npm -v

3. Create a Remotion project:

npm init video

4. Start development server:

npm run dev

5. Open the project in VS Code.

Recommended tools:

• VS Code
• Remotion Preview
• React knowledge
• Image editing software (optional)
• PNG assets with transparency

Recommended extensions:

• ES7 React snippets
• Prettier

Inputs Required

• Foreground images or videos
• Background assets
• Text overlays
• Video clips
• Animation timing information

Optional:

• Transparent PNG assets
• Alpha masks
• Branding assets
• Motion references

When to Use This Skill

Use this skill when:

• creating cinematic motion graphics
• building startup launch videos
• designing layered text animations
• simulating depth in scenes
• creating premium-looking transitions
• developing social media motion content
• building visually dynamic compositions

When NOT to Use

Do NOT use this skill for:

• static graphic design
• simple subtitle overlays
• non-animated compositions
• basic slideshow workflows
• projects without layered visual interaction

Example Use Case

Create a startup launch video where animated text moves behind product screenshots and video layers.

Claude should:

1. Separate foreground and background layers
2. Position masked image assets above text
3. Animate text frame-by-frame
4. Maintain clean depth illusion
5. Synchronize masking effects with scene timing
6. Ensure smooth rendering consistency

Final result should:

• feel cinematic
• create convincing depth
• maintain smooth motion
• preserve readability
• render consistently across frames

Core Masking Principles

1. Layer Ordering Controls Depth

Masking in Remotion depends heavily on visual layer ordering.

Foreground layers should:

• sit above text
• preserve occlusion illusion
• create depth separation

Typical structure:

Background
↓
Animated Text
↓
Foreground Image/Video

Correct layer ordering creates:

• cinematic depth
• realistic occlusion
• stronger visual hierarchy

2. Use Transparent Assets Whenever Possible

PNG assets with transparency improve masking flexibility.

Best use cases:

• product cutouts
• character renders
• foreground objects
• isolated UI elements

Transparent assets make it easier to:

• hide text partially
• simulate depth
• create smooth transitions

3. Animate Everything Frame-by-Frame

All masking motion should derive from:

• useCurrentFrame()
• interpolation
• spring systems

Avoid:

• CSS transitions
• browser animation systems
• uncontrolled movement

Preferred APIs:

• useCurrentFrame()
• spring()
• interpolate()

4. Preserve Layout Stability

Masking effects often create layout instability if dimensions change during animation.

Claude should proactively prevent:

• jumping text
• resizing elements
• unstable layer positioning
• clipping artifacts

Recommended strategies:

• fixed containers
• stable positioning
• controlled transforms
• isolated animation layers

5. Use Motion to Enhance Depth

Motion should reinforce layering.

Examples:

• foreground moves slower than background
• text slides beneath objects
• masked elements reveal gradually
• layered parallax effects

Good motion design improves:

• visual clarity
• cinematic feel
• scene engagement

Workflow

1. Plan Scene Depth

Start by identifying:

• foreground elements
• background layers
• animated text regions
• masking interactions

Define:

• which objects should hide text
• where depth transitions occur
• how motion supports layering

2. Organize Composition Structure

Separate layers clearly:

Example structure:

components/
  Background.tsx
  Foreground.tsx
  AnimatedText.tsx

Benefits:

• easier debugging
• reusable masking logic
• cleaner animation structure

3. Create Foreground Masks

Use:

• transparent PNGs
• cropped video layers
• isolated foreground elements

Position foreground layers above animated text.

This creates:

• hidden text effects
• depth simulation
• cinematic layering

4. Animate Text & Layers

Use:

• useCurrentFrame()
• spring()
• interpolation

Example animation goals:

• text sliding behind objects
• layered reveals
• cinematic transitions
• depth-enhancing motion

Preferred motion style:

• smooth
• controlled
• deterministic

Avoid:

• sudden jumps
• uncontrolled easing
• browser-dependent transitions

5. Synchronize Scene Timing

Ensure:

• masking aligns with motion
• transitions remain readable
• visual hierarchy stays clear

Subtitle timing and masking timing should remain synchronized frame-by-frame.

6. Validate Rendering Quality

Before export validate:

• masking alignment
• layer ordering
• text readability
• motion smoothness
• layout stability

Check frame-by-frame for:

• clipping issues
• unstable positioning
• visual artifacts

7. Render Final Video

Render output:

npm run build

or:

npx remotion render

Preferred export:

• MP4
• high bitrate for masking-heavy scenes

Output Expectations

The final output should include:

• cinematic masking effects
• smooth layered motion
• stable compositions
• convincing depth simulation
• production-ready rendered video

The workflow itself should remain:

• reusable
• modular
• render-safe
• maintainable

Execution Strategy (for AI agents)

The agent should:

1. Structure scenes around visual depth
2. Maintain clear layer hierarchy
3. Use masking to enhance storytelling
4. Animate all motion frame-by-frame
5. Preserve layout stability during transitions
6. Validate rendering consistency before export

The workflow should optimize for:

• cinematic quality
• visual clarity
• motion smoothness
• rendering consistency
• scene readability

Best Practices

• Keep foreground layers clean and isolated
• Use transparent assets whenever possible
• Avoid cluttered masking compositions
• Validate scenes frame-by-frame
• Keep motion smooth and intentional
• Maintain readability during masking
• Reuse layered animation patterns

Notes

• Layer ordering is critical for convincing masking effects
• Transparent assets significantly improve flexibility
• Stable layouts improve cinematic quality
• Subtle masking often looks better than aggressive effects
• Motion design strongly affects depth perception