ffmpeg-skill is a free, open-source Claude skill past 4,000 GitHub stars. It gives Claude 42 editing tools that run on your own computer, then has Claude check what it made.
Here's what it does, how to set it up, and the limits you should know first.
What it does
- Cut, join, remove silence, and fit a video to a length or a vertical frame.
- Burn captions that pop word by word, placed clear of each app's buttons.
- Add overlays and titles, clean up audio, and set loudness.
- Export for Reels, TikTok, Shorts, YouTube, X, LinkedIn and Facebook, and check the file against each one's specs.
- Work offline: no upload, no API key, no account.
Free, for your email
Get the full setup steps + the copy-paste setup prompt
The rest of this guide (5 more sections, 2 copy-paste prompts) opens right here. The setup prompt, one paste into Claude that sets it all up, comes by email only. Use your real address.
Unlocks: Step 1: install what it needs · Step 2: your first edit · Step 3: check it yourself · The catch · Sources
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