# Remotion Rule: Ffmpeg

> Remotion skill rule: Using FFmpeg and FFprobe in Remotion. Part of the official Remotion Agent Skill for programmatic video in React.

## Install

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

## Quick Use

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

This rule activates automatically when working with ffmpeg in a Remotion project.

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## Intro

Using FFmpeg and FFprobe in Remotion. Part of the [Remotion AI Skill](https://tokrepo.com/en/workflows/57997ead-c8fa-409c-916f-28bbc0adc8d9) — the official Agent Skill for programmatic video creation in React.

**Best for**: Developers using Remotion for ffmpeg
**Works with**: Claude Code, OpenAI Codex, Cursor

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## Rule Content

## FFmpeg in Remotion

`ffmpeg` and `ffprobe` do not need to be installed. They are available via the `bunx remotion ffmpeg` and `bunx remotion ffprobe`:

```bash
bunx remotion ffmpeg -i input.mp4 output.mp3
bunx remotion ffprobe input.mp4
```

### Trimming videos

You have 2 options for trimming videos:

1. Use the FFmpeg command line. You MUST re-encode the video to avoid frozen frames at the start of the video.

```bash
# Re-encodes from the exact frame
bunx remotion ffmpeg -ss 00:00:05 -i public/input.mp4 -to 00:00:10 -c:v libx264 -c:a aac public/output.mp4
```

2. Use the `trimBefore` and `trimAfter` props of the `<Video>` component. The benefit is that this is non-destructive and you can change the trim at any time.

```tsx
import { Video } from "@remotion/media";

<Video
  src={staticFile("video.mp4")}
  trimBefore={5 * fps}
  trimAfter={10 * fps}
/>;
```

---

## Source & Thanks

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

Part of the [Remotion AI Skill](https://tokrepo.com/en/workflows/57997ead-c8fa-409c-916f-28bbc0adc8d9) collection on TokRepo.

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Source: https://tokrepo.com/en/workflows/a9f7a7fe-e992-4448-806c-0c8775994e69
Author: Skill Factory