remotion

name	remotion
description	Create programmatic videos in React, render to MP4
category	AI Generation & Multimodal
status	active

Remotion

Purpose

Create real MP4 videos programmatically using React components. Combine JavaScript logic, animations, and dynamic data to produce professional videos at scale with render flexibility (local, server-side, or serverless Lambda).

When to Use

• Data-driven video generation (personalized, batch-rendered videos)
• Animated explainer videos or product demos
• Marketing campaigns with programmatic variations
• Video editing as code (versioning, templates, testing)
• High-volume video production (100s/1000s of unique videos)
• Integrating video into applications with custom editing UI

Do NOT use when: Quick one-off videos (use traditional video editors), real-time streaming, or non-deterministic content.

Workflow

1. Initialize Project — Run npx create-video@latest to scaffold a Remotion project with example composition.

2. Create Compositions — Write React components as video scenes. Use CSS or Tailwind for styling, JavaScript for animations, and props for dynamic content.

3. Parametrize & Preview — Pass data (text, images, JSON) to compositions. Develop and preview in Remotion Studio at http://localhost:3000.

4. Set Render Config — Define frame rate (30/60fps), dimensions (1080p/4K), codec, and output path.

5. Render Videos — Choose render target: local (CLI), server-side (Node.js), or serverless (Remotion Lambda). Export as MP4/WebM with optional audio.

Key Concepts

Composition: Video as React Component

A composition is a React component that returns JSX describing your video. Import Composition, Sequence (timeline segments), Img, AbsoluteFill (fullscreen layer), and animation utilities. Example:

export const MyVideo = ({ name, duration }) => (
  <AbsoluteFill style={{ background: '#fff' }}>
    <h1>{name}</h1>
    <motion.div animate={{ opacity: [0, 1] }} transition={{ duration }} />
  </AbsoluteFill>
);

Parametrization: Dynamic Content

Pass props to compositions as JSON or query params. Render videos programmatically with different names, images, colors, durations. Enables batch generation (100s of personalized videos).

Rendering Options

• Local: npx remotion render on your machine. Quick iteration, CPU-intensive.
• Server-side: Deploy composition to a Node.js server. Accept render requests via API.
• Remotion Lambda: Serverless AWS Lambda rendering. Scales to 1000s of concurrent renders. Charged per minute.

Timeline & Sequencing

Use <Sequence> to define when elements appear. Control frameRate, durationInFrames. Compose complex timelines by nesting sequences. Animations sync to frame count, ensuring deterministic output.

Audio Integration

Embed audio tracks (MP3, WAV) via <Audio> component. Sync to video duration. Mix multiple audio layers.

Example

Scenario: Generate personalized birthday videos for 100 customers.

Composition:

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

export const BirthdayVideo = ({ name, imageSrc }) => {
  return (
    <AbsoluteFill style={{ background: 'linear-gradient(to right, #FF6B6B, #FFE66D)' }}>
      <Sequence durationInFrames={120}>
        <h1 style={{ fontSize: 64, color: '#fff', textAlign: 'center' }}>Happy Birthday, {name}!</h1>
      </Sequence>
      <Sequence from={120} durationInFrames={120}>
        <Img src={imageSrc} style={{ width: '100%', height: '100%', objectFit: 'cover' }} />
      </Sequence>
    
  );
};

Render Script:

const customers = ['Alice', 'Bob', 'Carol'];
customers.forEach(({ name, imageSrc }) => {
  render({
    composition: BirthdayVideo,
    props: { name, imageSrc },
    fps: 30,
    durationInFrames: 240,
    codec: 'h264',
    outputPath: `./videos/${name}-birthday.mp4`,
  });
});

Result: 100 unique birthday videos, versioned in Git, rendered in parallel via Lambda.

Common Pitfalls

• Non-deterministic content: Don't use Math.random() or new Date() inside render. Determinism = cacheable, reproducible videos.
• Ignoring frame-based timing: Think in frames (e.g., 300 frames @ 30fps = 10s), not seconds. Off-by-one frame errors compound.
• Heavy CPU renders: 4K 60fps videos burn CPU. Use Lambda for scale or downgrade resolution locally.
• Missing parametrization: Hardcoding content prevents batch generation—always extract as props.
• Audio sync issues: Test audio duration matches video durationInFrames. Audio libraries vary; test codec compatibility.
• Complex nested sequences: Debugging timelines with 10+ nested sequences is painful. Flatten or use composition variables.

References

• Remotion Documentation — Official docs, API reference, and tutorials
• Remotion GitHub Repository — Source code, issues, and examples
• Produce Videos in React with Remotion — In-depth tutorial and use case exploration
• Deep Dive into Remotion Framework — Advanced patterns and Lambda rendering