remotion-video

name	remotion-video
description	Builds Remotion videos in React: compositions, useCurrentFrame, interpolate/spring, Sequence, and npx remotion render to MP4/WebM. Use when the user wants programmatic Remotion video, Remotion Studio, or frame-based React animation. Not for Premiere/FFmpeg timeline edits or AI video models (Sora/Veo). Never assume this folder ships a references pack.
version	1.0.1
recommended_skills	["react-frontend","animation-motion"]

When this skill is activated, always start your first response with the 🎬 emoji.

Overview

Remotion is a framework for creating videos programmatically using React. Instead of timeline-based editors, you write compositions as React components where every frame is a pure function of the current frame number. This gives you the full power of TypeScript, npm packages, and component-based architecture for building videos — from animated explainers and social media clips to data-driven visualizations and personalized video at scale.

This skill covers project setup, composition structure, frame-based animations with interpolate and spring, scene sequencing, asset management, audio integration, parametrized videos with Zod schemas, and rendering to MP4/WebM via CLI or programmatic APIs.

Sources verified (2026-05-31):

• Remotion docs: https://www.remotion.dev/docs/
• W3C WCAG 2.2: https://www.w3.org/TR/WCAG22/
• Apple HIG: https://developer.apple.com/design/human-interface-guidelines/
• Material Design 3: https://m3.material.io/

When to Use

Trigger this skill when the user:

• Wants to create a video programmatically using React/TypeScript
• Asks about Remotion compositions, useCurrentFrame, or useVideoConfig
• Needs to animate text, elements, or transitions between scenes
• Wants to render a video to MP4, WebM, or GIF from code
• Asks about spring animations, interpolate, or frame-based timing
• Wants to set up a new Remotion project from scratch
• Wants to add audio, images, or fonts to a Remotion video
• Asks about parametrized/data-driven video generation
• Needs to configure Remotion Studio for previewing compositions
• Needs programmatic, deterministic, reproducible video output (not AI synthetic footage)

Do NOT trigger this skill for:

• General React questions unrelated to video creation — use React skills
• Video editing with traditional timeline tools (Premiere, DaVinci, FFmpeg CLI)
• CSS animations for web pages — use animation/motion-design skills
• Video playback or streaming in web apps — use media player skills
• AI video model generation (Sora, Veo, Runway) — use those skills for synthetic shots, then assemble with Remotion if deterministic overlays are needed

Prerequisites

• Node.js 18+ and npm
• Basic React and TypeScript familiarity
• For rendering: FFmpeg is bundled with Remotion's renderer; no separate install needed for local rendering
• For cloud/Lambda rendering: follow current Remotion docs (https://www.remotion.dev/docs/lambda). This folder does not ship extra guides.

Key Principles

1. Every frame is a pure function — A Remotion component receives the current frame via useCurrentFrame() and must render deterministically for that frame. No side effects, no randomness without seeds, no reliance on wall-clock time. The same frame number must always produce the same visual output.

2. Compositions are the unit of video — Each <Composition> defines a video with explicit dimensions (width, height), frame rate (fps), and duration (durationInFrames). Think of compositions as "pages" in your project — one per video variant or scene that can be rendered independently.

3. Interpolate for everything — The interpolate() function maps frame numbers to any numeric value (opacity, position, scale, color channels). Combined with extrapolateRight: 'clamp', it is the workhorse for all animations. Use spring() when you need physics-based easing.

4. Sequence for time offsets — Use <Sequence from={frame}> to delay when children start appearing, and <Series> to play children one after another. Never use setTimeout or manual frame math for sequencing — the declarative primitives handle it correctly across preview and render.

5. Assets are static, data is dynamic — Put images, fonts, and audio files in the public/ folder and reference them with staticFile(). For dynamic data (API responses, database records), use delayRender() / continueRender() to pause rendering until the data is loaded.

Procedure

1. Set Up a New Remotion Project

npx create-video@latest

This scaffolds a project with TypeScript, a sample composition, and Remotion Studio configured. The project structure:

my-video/
  src/
    Root.tsx          # Registers all compositions
    MyComp.tsx        # Your first composition component
  public/             # Static assets (images, fonts, audio)
  remotion.config.ts  # Remotion configuration
  package.json

Start the preview studio:

npx remotion studio

2. Register a Composition

Every Remotion project has a root file that registers compositions:

import { Composition } from 'remotion';
import { MyVideo } from './MyVideo';

export const RemotionRoot: React.FC = () => {
  return (
    <Composition
      id="MyVideo"
      component={MyVideo}
      durationInFrames={150}
      fps={30}
      width={1920}
      height={1080}
    />
  );
};

HARD RULE: Composition dimensions must be even numbers. Video codecs (H.264, VP8) require even width and height. Remotion will throw an error if you use odd dimensions like 1921x1081. Always use even pixel values (1920x1080, 1280x720, etc.).

3. Frame-Based Timing

All timing in Remotion is expressed in frames, not seconds:

• Seconds to frames: seconds * fps
• Frames to seconds: frame / fps

At 30 fps, a 5-second video is 150 frames. Frame 0 is the first frame.

HARD RULE: Never hardcode fps in frame calculations. Always use useVideoConfig().fps to derive timing so compositions remain correct when fps changes.

4. Create a Basic Composition with useCurrentFrame

import { AbsoluteFill, useCurrentFrame, useVideoConfig, interpolate } from 'remotion';

export const FadeInText: React.FC = () => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();

  const opacity = interpolate(frame, [0, 30], [0, 1], {
    extrapolateRight: 'clamp',
  });

  const translateY = interpolate(frame, [0, 30], [20, 0], {
    extrapolateRight: 'clamp',
  });

  return (
    <AbsoluteFill
      style={{
        justifyContent: 'center',
        alignItems: 'center',
        backgroundColor: '#0f0f0f',
      }}
    >
      <h1
        style={{
          fontSize: 80,
          color: 'white',
          opacity,
          transform: `translateY(${translateY})`,
        }}
      >
        Hello Remotion
      
    
  );
};

5. Animate Text Word by Word

Split text into words and stagger each word's appearance using <Sequence>:

import { AbsoluteFill, Sequence, useCurrentFrame, interpolate } from 'remotion';

const AnimatedWord: React.FC<{ children: string }> = ({ children }) => {
  const frame = useCurrentFrame();
  const opacity = interpolate(frame, [0, 15], [0, 1], {
    extrapolateRight: 'clamp',
  });
  const translateY = interpolate(frame, [0, 15], [10, 0], {
    extrapolateRight: 'clamp',
  });

  return (
    <span
      style={{
        display: 'inline-block',
        opacity,
        transform: `translateY(${translateY}px)`,
        marginRight: 12,
      }}
    >
      {children}
    </span>
  );
};

export const WordByWord: React.FC<{ text:  }> =  {
   words = text.();

   (
    
  );
};

6. Element Animations with spring

Use spring() for physics-based animations that feel natural:

import { AbsoluteFill, useCurrentFrame, useVideoConfig, spring } from 'remotion';

export const SpringCard: React.FC = () => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();

  const scale = spring({
    frame,
    fps,
    config: { damping: 200, stiffness: 100, mass: 0.5 },
  });

  const slideUp = spring({
    frame: frame - 10,
    fps,
    config: { damping: 12, stiffness: 100 },
  });

  return (
    <AbsoluteFill style={{ justifyContent: 'center', alignItems: 'center', backgroundColor: '#0d1117' }}>
      <div
        style={{
          width: 400,
          height: 250,
          backgroundColor: '#161b22',
           ,
           `(${}) (${(  ) * })`,
        }}
      >
        Spring Animation
      
    
  );
};

GOTCHA: spring() starts from frame 0 of its context. When using spring() inside a <Sequence from={60}>, the frame passed to spring resets to 0 at frame 60 of the parent. If you pass the parent's raw frame, the animation will already be complete. Use useCurrentFrame() inside the Sequence child, not a frame from the parent.

7. Scene Transitions with Sequence and Series

Use <Sequence> for overlapping scenes and <Series> for sequential playback:

import { AbsoluteFill, Sequence, Series, useCurrentFrame, interpolate } from 'remotion';

const Scene: React.FC<{ color: string; title: string }> = ({ color, title }) => {
  const frame = useCurrentFrame();
  const opacity = interpolate(frame, [0, 20], [0, 1], {
    extrapolateRight: 'clamp',
  });

  return (
    <AbsoluteFill style={{ backgroundColor: color, justifyContent: 'center', alignItems: 'center' }}>
      <h1 style={{ color: 'white', fontSize: 72, opacity }}>{title}</h1>
    </AbsoluteFill>
  );
};

export const MultiScene: React.FC = () => {
   (
    
  );
};

8. Asset Handling (images, fonts, staticFile)

Reference static assets from the public/ folder using staticFile():

import { AbsoluteFill, Img, staticFile } from 'remotion';

export const AssetDemo: React.FC = () => {
  return (
    <AbsoluteFill style={{ justifyContent: 'center', alignItems: 'center' }}>
      <Img
        src={staticFile('logo.png')}
        style={{ width: 300, height: 300 }}
      />
    </AbsoluteFill>
  );
};

Load custom fonts with @remotion/google-fonts or CSS @font-face:

import { loadFont } from '@remotion/google-fonts/Inter';

const { fontFamily } = loadFont();

export const FontDemo: React.FC = () => {
  return (
    <AbsoluteFill style={{ justifyContent: 'center', alignItems: 'center' }}>
      <h1 style={{ fontFamily, fontSize: 64, color: 'white' }}>
        Custom Font
      </h1>
    </AbsoluteFill>
  );
};

GOTCHA: staticFile() paths are relative to public/. Calling staticFile('images/logo.png') looks for public/images/logo.png. Using absolute paths or paths outside public/ will fail silently in preview and error during render. Ensure all assets are in the public/ directory.

9. Audio Integration

Add audio with volume control and timing:

import { AbsoluteFill, Audio, Sequence, staticFile, interpolate } from 'remotion';

export const WithAudio: React.FC = () => {
  return (
    <AbsoluteFill style={{ backgroundColor: '#000' }}>
      <Audio
        src={staticFile('background-music.mp3')}
        volume={(f) =>
          interpolate(f, [0, 30, 120, 150], [0, 0.8, 0.8, 0], {
            extrapolateLeft: 'clamp',
            extrapolateRight: 'clamp',
          })
        }
      />
      <Sequence from={15}>
        <Audio src={staticFile('whoosh.mp3')} volume={0.5} />
      </Sequence>
    </AbsoluteFill>
  );
};

10. Async Data with delayRender

HARD RULE: Always call delayRender() immediately when async data is needed, and continueRender() when ready. If you forget, the render will proceed before data loads, showing empty or broken frames.

import { useState, useEffect, useCallback } from 'react';
import { AbsoluteFill, delayRender, continueRender } from 'remotion';

export const DataDriven: React.FC<{ apiUrl: string }> = ({ apiUrl }) => {
  const [data, setData] = useState(null);
  const [handle] = useState(() => delayRender('Loading API data', { timeoutInMilliseconds: 60000 }));

  const fetchData = useCallback(async () => {
    const res = await fetch(apiUrl);
    const json = await res.json();
    setData(json);
    continueRender(handle);
  }, [apiUrl, handle]);

  useEffect(() => {
    fetchData();
  }, [fetchData]);

  if (!data) return null;

  return (
    <AbsoluteFill style={{ backgroundColor: '#000',  '' }}>
      {data.title}
    
  );
};

GOTCHA: delayRender has a default 30-second timeout. If your async operation takes longer, the render will abort. Increase the timeout with delayRender('Loading data', { timeoutInMilliseconds: 60000 }) for slow operations.

11. Rendering Videos

Render to MP4 from the command line (Windows PowerShell):

# Render default composition
npx remotion render src/index.ts MyVideo out/video.mp4

# Render at 4K resolution
npx remotion render src/index.ts MyVideo out/video.mp4 --width 3840 --height 2160

# Render to WebM
npx remotion render src/index.ts MyVideo out/video.webm --codec vp8

# Render a specific frame range
npx remotion render src/index.ts MyVideo out/video.mp4 --frames 0-90

# Render with custom props
npx remotion render src/index.ts MyVideo out/video.mp4 --props '{\"title\": \"Hello\"}'

HARD RULE: Use <OffthreadVideo> instead of <Video> for rendered output. <Video> has slower rendering performance due to seeking overhead. <OffthreadVideo> is optimized for render-time playback.

For programmatic rendering, Lambda, codecs, and GIF, use the official Remotion docs: https://www.remotion.dev/docs/render and https://www.remotion.dev/docs/lambda. This skill folder does not ship extra guide files.

12. Parametrized Videos with Zod Schemas

For data-driven video, define props with Zod schemas in this file's procedure and the Remotion calculateMetadata docs (https://www.remotion.dev/docs/parametrized-rendering).

Pitfalls

Mistake	Why It Is Wrong	What to Do Instead
Using Math.random() without a seed	Produces different output per frame during render	Use a deterministic seed or random() from Remotion
Using setTimeout / setInterval	Breaks frame-based rendering — timers do not advance per frame	Use useCurrentFrame() and frame math for all timing
Missing extrapolateRight: 'clamp'	Values overshoot beyond the target range on later frames (e.g., opacity goes to 2)	Always add { extrapolateRight: 'clamp' } to interpolate() unless you intentionally want extrapolation
Hardcoding fps in frame calculations	Breaks when composition fps changes	Use useVideoConfig().fps to derive timing
Using <Video> for rendered output	Slower rendering performance due to seeking overhead	Use <OffthreadVideo> for better render performance
Forgetting delayRender() for async data	Renders before data loads, showing empty/broken frames	Call delayRender() immediately, continueRender() when ready
Inline styles with non-deterministic values	Flickers or inconsistency between preview and render	Derive all style values from the frame number only
Giant single composition	Hard to maintain and impossible to render scenes independently	Split into multiple compositions or use <Series> for scenes
Odd composition dimensions	Video codecs require even width/height; Remotion throws an error	Always use even pixel values (1920x1080, 1280x720, etc.)
staticFile() with absolute paths	Fails silently in preview, errors during render	Paths are relative to public/ — keep assets there
delayRender timeout exceeded (30s default)	Render aborts if async takes too long	Pass { timeoutInMilliseconds: 60000 } for slow operations

Verification

1. Studio preview works:

   npx remotion studio
   

   Open the browser URL shown in terminal. Confirm your composition appears in the left sidebar and plays when you press play.

2. Single-frame render check (fast smoke test):

   npx remotion still src/index.ts MyVideo out/frame-0.png --frame 0
   

   Verify out/frame-0.png exists and shows the expected first-frame visual.

3. Full render check:

   npx remotion render src/index.ts MyVideo out/video.mp4
   

   Verify the output file exists:

   Test-Path out/video.mp4
   

   Expected output: True

4. Determinism check: Render the same composition twice and compare file sizes — they should be identical or near-identical. Non-deterministic behavior (random without seed, wall-clock time) will produce different outputs.

5. Frame range check: Render a short range to verify timing:

   npx remotion render src/index.ts MyVideo out/clip.mp4 --frames 0-30
   

   Verify the clip is approximately 1 second at 30 fps.

Official docs (no extra files in this folder)

• Animation: https://www.remotion.dev/docs/animating-properties
• Render CLI: https://www.remotion.dev/docs/cli/render
• Parametrized rendering: https://www.remotion.dev/docs/parametrized-rendering

Related Skills

• react-frontend — for general React component patterns, hooks, and TypeScript
• animation-motion — for runtime web animation (GSAP, Motion, CSS animations) vs. rendered video
• ui-ux — for interface design, accessibility, and visual hierarchy guidance applicable to video overlays and captions