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Add-ons for AI coding tools

ffmpeg-skill

Lets AI coding assistants like Claude Code, Cursor and Codex edit your videos on your own computer.

What it does

ffmpeg-skill is an add-on (an "Agent Skill") that gives AI coding assistants a set of video-editing tools. It uses FFmpeg, a free program for working with video and audio files. The assistant can cut and join clips, remove silences, add captions, change a video's shape (for example from wide to tall for phones), even out the volume, and export for platforms like TikTok, Reels or YouTube.

It teaches the assistant a fixed routine: first measure the file, then edit, then check the result. After editing, it inspects the output, including a sheet of still frames, before reporting back. The tools can also be used through MCP, a standard way for AI assistants to connect to outside tools.

Everything runs locally. Its makers say it needs no cloud service, no account and no API key, so your footage is not uploaded. Optional speech-to-text for captions works only if you install a local speech engine.

Who it's for

People who already use an AI coding assistant and want it to edit videos for social media, podcasts or interviews without uploading their footage.

Can I use it without coding?

With some setup. You install it with one command and need FFmpeg and Python on your computer, then you ask your AI assistant to edit videos in plain language. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Mac, Linux
Computer
An ordinary computer is fine
Privacy
Runs on your own device: your data stays with you
API key
Not needed

Try it

  1. Make sure FFmpeg and Python 3 are installed on your computer.
  2. Run the project's one-line install command to add the skill to Claude Code, Cursor or Codex, then run its "doctor" check.
  3. Ask your AI assistant in plain words to edit a video, for example to trim it and make it 60 seconds for Reels.

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • Plain-AyI is an independent guide and doesn't host or review the software it lists. Please check each project's official page before installing.
  • License (MIT): Very permissive: free to use, change and share, including for business.
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