A developer using the handle jub0t released Concat, an open-source, cross-platform video editor built as a free alternative to CapCut, according to its GitHub repository. The project has drawn more than 3,800 stars since it was created in late August.
Concat runs on a native Rust engine with a GPU compositor and ships more than 170 effects, filters, transitions and text animations, along with multi-track editing, blend modes and keyframe animation through a curve editor, the repository says. It exports H.264, HEVC and AV1 video up to 4K at 60 frames per second.
The editor includes auto-captioning and text-to-speech through local Whisper models, voice cloning, and background removal for people and objects, according to the repository. It also exposes a JSON-RPC, gRPC and MCP API alongside a command-line interface, letting AI agents cut video directly, the project says.
Concat runs on Windows, macOS, Linux, Android and sideloaded iOS and iPadOS, and is licensed under AGPL-3.0-or-later with documented exceptions. The project describes itself as in beta: "it works, and it still has edges."
Video editors that expose an API for agents are still rare; most agent tooling targets code or text. A CapCut alternative an agent can drive through MCP, rather than a human dragging clips on a timeline, is a preview of where consumer creative tools are headed next.