ButterCut

This is the source code for the core ButterCut XML generator and video editing agent. If you love or hate Docker, have opinions on types, and have a favorite text editor, this is the spot for you. Otherwise, we recommend following the installation instructions on ButterCut.io.

Videos

Watch the demo: "I Taught Claude Code to Edit Movies"	Watch the ButterCut install video

Getting Started

ButterCut targets Macs with Apple Silicon (M-series chips). If you're technical and don't mind agent churn, you can likely get it working on Windows, Linux, etc. — but until revenue from ButterCut Pro is full time ish (🤞), broad Windows/Linux compatibility isn't a priority and isn't something I'll publicly support for non-technical users.

Clone this repository and then set it as your active directory.

git clone https://github.com/barefootford/buttercut.git && cd buttercut

Call the /setup skill to automatically install dependencies, or see advanced-setup.md for a custom install. Primary requirements are Ruby, Python, FFmpeg (full), and WhisperX. Check .python-version and .ruby-version for specific language versions, and Gemfile and requirements.txt for their respective dependencies.

Usage

ButterCut has two primary abstractions: libraries (where footage goes) and cuts (the agent builds a select, scene, or roughcut with you).

See docs/usage.md for working with libraries and cuts.

ButterCut vs. ButterCut Pro

This is the core (free) version of ButterCut. ButterCut Pro is the paid edition ($49/year).

Feature	ButterCut	ButterCut Pro
Single-track cuts	✅	✅
Exports to Final Cut Pro, Premiere & DaVinci Resolve	✅	✅
Multi-track cuts — B-roll laid over your A-roll spine	—	✅
ButterCut Preview — browse libraries, clips & cuts in Claude Desktop	—	✅
Multicam cuts	—	Coming soon

If you're a developer interested in a reduced-cost Pro license in exchange for bug reports, DM me on the ButterCut Discord linked from buttercut.io.

License

ButterCut is open source under the PolyForm Noncommercial License 1.0.0 with a Commercial Output exception.

• You absolutely can use ButterCut to make commercial videos. Cut a YouTube video for ad revenue, edit a paid client project, deliver a sponsored brand piece — all fine. The videos are yours, and the licensor claims no rights to them.
• You can't repackage ButterCut as commercial software. Selling, hosting, or bundling the tool itself (or a fork of it) into a commercial product, plugin, or SaaS requires a separate commercial license from TubeSalt LLC.

Personal, hobby, research, and educational use of the software is also free under the underlying license. If you'd like a commercial software license, reach out to Andrew@TubeSalt.com.

Contributing

Start with an issue, not a PR

Thanks to LLMs, it's really easy to spike a quick change to ButterCut — add a feature, fix a bug, etc. But it's still quite difficult to keep code cohesive and maintain working XML across three different editors. If you want to contribute, the best way to start is with a GitHub issue. Write a human-generated issue (I know!), and I'll work with you from there to get a commit in. I'm happy to pair, jump on a Google Meet, etc., to provide context and help get it over the finish line.

Alternatively, you can always create your own custom skills (or fork existing ones) and prefix them with user-, e.g. user-quick-interview-summary. User skills stays on your own Mac, .gitignored, so you can build custom workflows while staying on main. Include your own Ruby or Python scripts inside the skill folder for maximum power without needing a fork.

Legal

When you submit a pull request, you give up any rights or claims to the changes you submit to the ButterCut/TubeSalt project, and you assign the copyright for those changes to TubeSalt LLC.

If you can't or don't want to reassign those rights — for example, your employment contract may not allow it — don't submit a pull request. Instead, open an issue, and someone else can do the work.

In plain terms: when you submit a pull request to us, that code becomes ours. Most of the time, that's what you intend anyway, and we hope it doesn't scare you away from contributing.

Thanks

ButterCut was inspired by ambitious open source work from Chris Hocking and Andrew Arrow.