AI video editor that keeps your footage local
Last updated: November 10, 2026
SpaceCut is an AI video editor for Mac and Windows that works on your computer. Your video files, projects and transcripts are never uploaded, and transcription runs on your machine. The AI agent is the one part that goes online: it sends your request, plus the transcript excerpts and still frames it needs, to the Claude or ChatGPT account you connected.
What stays, and what leaves
| What | Where it goes |
|---|---|
| Your video and audio files | Nowhere. SpaceCut reads them where they are on your disk and never modifies the originals |
| Your projects, edits and exports | They stay on your computer |
| Transcription | Done on your computer, in 25 languages. The speech models are downloaded once, from Hugging Face |
| Rendering the final video | Done on your computer |
| Your requests to the agent, transcript excerpts, still frames | To Anthropic or OpenAI, straight from your computer, under your own account |
| Your license key, an anonymous identifier of your computer, the app version | To our license server, when you activate and from time to time after |
| Analytics and usage statistics | None. The app sends us nothing about what you do or what is in your projects |
The full detail is in our Privacy Policy.
What the AI agent sees
The agent does not receive your video files. It reads the transcript, with the time of each word, and it looks at still frames when it has to check the picture: is the title readable, is the face in frame. Those excerpts go from your computer to the AI provider you connected, under that provider’s terms. We never receive them.
The agent runs on your own Claude Code or Codex plan. You choose the provider, and its privacy settings are yours to set.
How to check any AI video editor yourself
Many AI video editors work in the cloud: you upload your footage and their servers process it. Three checks tell you which kind you have.
- Read the privacy policy. Look for where your media is stored and processed, and for how long.
- Watch the import. If adding a 10 GB file starts a long upload, your footage is leaving your computer.
- Turn off your internet connection. See what still works.
In SpaceCut, the agent stops without a connection, because Claude Code and Codex run online. So you cannot ask for anything new: no new edit, no new animation, and no new transcript, because the agent is the one that starts a transcription (the transcription itself runs on your computer). Everything you already have keeps working: you can open your timeline, change it by hand, adjust the settings of an animation and export. The app also checks your license online from time to time.
Why it matters
- Client work. Footage under a confidentiality agreement stays where your contract says it stays.
- Unreleased videos. Nothing sits on someone else’s server before you publish.
- Large files. No upload and no waiting in a queue: you drop a 4K file and start.
Questions
Is my footage uploaded anywhere? No. Your video files, transcripts and projects stay on your computer. Only what the agent needs to see (transcript excerpts, still frames) goes to the AI provider you connected.
Does SpaceCut train an AI on my videos? We never receive your videos, so we cannot. What your AI provider does with the excerpts the agent sends depends on your plan and on their terms: check the privacy settings of your Claude or ChatGPT account.
Where are my original files? Where you left them. You link a folder and SpaceCut reads it in place. Nothing is copied or moved, and the originals are never changed.
Can I edit without the agent? Yes. The timeline is a normal one: tracks, cuts, keyframes, nested sequences. Every change the agent makes can be undone or redone by hand.
Which computers does it run on? Macs with Apple silicon (M1 or later), and PCs with Windows 10 or 11 (64-bit). See the prices.