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11,760 stars · Rust

How to use Concat: what you can do with it

What is Concat? Concat is a free, open-source video editor and CapCut alternative for macOS, Windows, Linux and Android. It runs locally on a native Rust engine with a GPU compositor and covers auto-captions with local Whisper, text-to-speech and voice cloning, background removal, keyframes, 100 effects and 4K export, with no watermark, account or upload. A built-in MCP server (concat --mcp) and a JSON-RPC API let AI agents and scripts edit video too.

How do I use it? Download Concat from the website or GitHub Releases for your platform; then on macOS, if an unsigned build will not open, run xattr -dr com.apple.quarantine /Applications/Concat.app; download a caption model size once from Settings. Full steps below.

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What do you want to do?

3 use cases

Quick start with Concat

  1. Check you have what it needs: macOS, Windows, Linux or Android (iOS sideloaded); AI models for captions, voices and cutout download once from Settings, then work offline; To build from source: Rust 1.93+, FFmpeg 7+ development libraries, cmake and a C++ compiler.
  2. Open jub0t/Concat on GitHub and read the README and license.
  3. Download Concat from the website or GitHub Releases for your platform
  4. On macOS, if an unsigned build will not open, run xattr -dr com.apple.quarantine /Applications/Concat.app
  5. Download a caption model size once from Settings
  6. Drop in your footage and generate auto-captions; style them with title presets

These steps come from our top use case, Add styled auto-captions to Shorts and Reels, fully offline, which also has a copy-paste agent prompt.

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Using the Deduped MCP, get the setup steps for jub0t/Concat

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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Concat alternatives · Best AI repos for Content

About this repo

  • Who it is forCreators making TikToks, Reels, Shorts, YouTube videos and podcast clips who want CapCut features without watermarks, accounts or uploads, and developers who want agents to cut video.
  • Why it is hot12k stars, launched 62 days ago, picked up by one AI source we track
  • LanguageRust
  • Sourcegithub.com/jub0t/Concat · Back to Hot repos

Requirements

  • macOS, Windows, Linux or Android (iOS sideloaded)
  • AI models for captions, voices and cutout download once from Settings, then work offline
  • To build from source: Rust 1.93+, FFmpeg 7+ development libraries, cmake and a C++ compiler

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Maintain Concat? Show readers where to find these use cases. Use cases on Deduped

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[![Use cases on Deduped](https://dedupedai.com/badge/jub0t/Concat.svg)](https://dedupedai.com/use-cases/jub0t-concat/?utm_source=github&utm_medium=badge&utm_campaign=jub0t-Concat)

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<a href="https://dedupedai.com/use-cases/jub0t-concat/?utm_source=github&amp;utm_medium=badge&amp;utm_campaign=jub0t-Concat"><img src="https://dedupedai.com/badge/jub0t/Concat.svg" alt="Use cases on Deduped" height="20"></a>

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Questions about Concat

What is Concat?

Concat is a free, open-source video editor and CapCut alternative for macOS, Windows, Linux and Android. It runs locally on a native Rust engine with a GPU compositor and covers auto-captions with local Whisper, text-to-speech and voice cloning, background removal, keyframes, 100 effects and 4K export, with no watermark, account or upload. A built-in MCP server (concat --mcp) and a JSON-RPC API let AI agents and scripts edit video too. It is an open-source project on GitHub: https://github.com/jub0t/Concat.

How do I use Concat?

Download Concat from the website or GitHub Releases for your platform; then on macOS, if an unsigned build will not open, run xattr -dr com.apple.quarantine /Applications/Concat.app; download a caption model size once from Settings. The use cases on this page give the full steps and a copy-paste agent prompt for each job.

Who is Concat for?

Creators making TikToks, Reels, Shorts, YouTube videos and podcast clips who want CapCut features without watermarks, accounts or uploads, and developers who want agents to cut video.

What can I do with Concat?

3 use cases so far, for example: Add styled auto-captions to Shorts and Reels, fully offline; Let Claude or another agent edit your video over MCP; Make a tutorial with a cloned voice-over and background removal. Each has steps and a copy-paste agent prompt.

What do I need to run Concat?

macOS, Windows, Linux or Android (iOS sideloaded); AI models for captions, voices and cutout download once from Settings, then work offline; To build from source: Rust 1.93+, FFmpeg 7+ development libraries, cmake and a C++ compiler.

What are alternatives to Concat?

Other hot AI repos in Content: Voice Studio, Anatomy, Reelmimic, Get Brolls, DeepSeek Whalechan.

Is Concat safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.