# Remotion Captions & Subtitles — AI-Powered Video Subtitles

> AI skill for generating and rendering captions in Remotion videos. Supports transcription, word-level timing, and styled subtitle export.

## Install

Save the content below to `.claude/skills/` or append to your `CLAUDE.md`:

## Quick Use

```bash
npx skills add remotion-dev/skills
```

The captions skill activates automatically when you work with subtitles in a Remotion project.

---

## Intro

A specialized Remotion skill for AI-powered caption and subtitle workflows. Covers transcription (audio/video to captions), the `Caption` JSON format with word-level timing, styled subtitle rendering, and dynamic composition duration based on caption length. Part of the [Remotion AI Skills](https://tokrepo.com/en/workflows/57997ead-c8fa-409c-916f-28bbc0adc8d9) collection.

**Best for**: Developers building video content with auto-generated subtitles
**Works with**: Claude Code, OpenAI Codex, Cursor

---

## Caption Format

All captions use the `Caption` type:
```typescript
import type { Caption } from "@remotion/captions";

type Caption = {
  text: string;
  startMs: number;
  endMs: number;
  timestampMs: number | null;
  confidence: number | null;
};
```

## Generating Captions

Transcribe video/audio files to generate captions with word-level timestamps. Supports multiple transcription services.

## Displaying Captions

Render captions as styled overlays on your video compositions, with full control over:
- Font, size, color, background
- Word-by-word or line-by-line display
- Animated highlighting of current word
- Position (top, bottom, center)

### FAQ

**Q: What caption format does Remotion use?**
A: Remotion uses a JSON-based `Caption` type with `text`, `startMs`, `endMs`, `timestampMs`, and `confidence` fields for word-level timing.

**Q: Can I auto-generate subtitles from audio?**
A: Yes. The skill includes transcription rules for generating captions from audio/video files with word-level timestamps.

---

## Source & Thanks

> Created by [Remotion](https://github.com/remotion-dev). Licensed under MIT.
> [remotion-dev/skills](https://github.com/remotion-dev/skills) — Subtitles rule

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Source: https://tokrepo.com/en/workflows/7775f06a-8adf-477a-91e9-85f51682cd10
Author: Skill Factory