Velocut plugin
Velocut gives Codex a browser studio for video editing and 3D scenes, with attributed edits you can undo.
- 451 ★ on the repository
- Last commit
- MIT
Extended access
Why this level
- The plugin starts a local studio server and an MCP package through npx.
- AI observations and cloud features send data to the chosen model provider.
Install
- Works in
Manual install
npx @velocut/cli@0.0.2 studioStarts the prebuilt studio in the browser without the plugin. The portable ZIP from the release starts with node start-studio.mjs.
Access and checks
How we reviewExtended accessThe tool runs code or makes network calls and only reads external data.
- The plugin starts a local studio server and an MCP package through npx.
- AI observations and cloud features send data to the chosen model provider.
This is third-party code. Review the repository files before installing.
What it does
Velocut is a browser studio for video editing and 3D scene direction. The Codex plugin connects an agent to it over MCP: it builds scenes from geometry and furniture assemblies, edits objects, imports GLB models, places cameras, assembles clips on the timeline and inspects the result through frames and contact sheets. The model runs inside Codex; the plugin does not call a second AI inside Velocut. Agent edits land in the same branching history as manual ones, so any change can be inspected and undone. Revision checks reject stale agent edits when a person changed the scene in the meantime. Projects, media storage and rendering stay in the browser.
Who it is for. People who edit clips and build 3D scenes with Codex and want every agent edit visible in history rather than a finished file.
Good fit when
- A sunlit room with a table, two chairs and a sculpture is needed, built from editable objects.
- A first cut must be assembled from a set of clips on several tracks.
- A camera composition should be reviewed from rendered frames before export.
- A GLB model must be imported, arranged as copies and exported as static GLB.
Not a fit when
- Work happens in Safari or Firefox: the full editor needs WebGPU and WebCodecs in Chrome or Edge.
- Editing runs on a server without a browser.
- A heavy cinematic render is the goal rather than an editable browser scene.
Example request
Open Velocut, build a sunlit room with a wooden table and two chairs, then compose a wide shot and a close-up.Limitations
Needs Node.js 22.6 or newer with npm, and Chrome or Edge with WebGPU and WebCodecs. Projects live in browser IndexedDB and OPFS, so reopening them requires the same profile, hostname and port. The version is 0.0.2, an early release. Velocut's built-in assistant, cloud video generation, narration and transcription are configured separately and need their own keys. Generation spends credits of the chosen service. Video and 3D work only while the studio is open in a browser and paired through the pairing link.
How to disable. Remove the Velocut plugin in Codex and close the terminal running Studio. Projects live in the browser: clear site data for localhost:5173 if they are not needed.
FAQ
How do I connect Velocut to Codex?
Add a plugin marketplace with source `open-ribbi/velocut` and ref `v0.0.2`, install the Velocut plugin and ask Codex to open Velocut. Studio starts by itself.
Is a separate model key needed?
No, manual editing and the Codex route need no key. Keys are required only for the built-in assistant and cloud generation providers.
How do I run the studio without Codex?
Run `npx @velocut/cli@0.0.2 studio` and open the link in Chrome or Edge. Other MCP clients connect to the same MCP server.
Can an agent edit be undone?
Yes. Edits are recorded in history with the author, and you can inspect them, undo them or return to an earlier state and continue from there.
Which formats can be exported?
Video is encoded through WebCodecs into MP4 and codec availability depends on the browser. Static models are exported as GLB through the Director, SDK and MCP.
Discussion
No questions or reviews yet.
Related
PluginsChatCut connects Claude Code, Codex and Cursor to a video editor: the agent edits your footage, adds captions, cuts silences.
An open-source video editor with a Codex plugin: the agent opens a project in the side panel, imports media, edits in batches
A video editor with a local MCP server: an agent reviews the cut, edits the timeline and starts exports, ComfyUI generates
A Codex and Claude Code plugin with a local storyboard table: the agent writes shots and makes images, motion and voice-over
chengfeng-videocut
chengfeng-videocut-skills
An agent plugin for editing talking-head video: removing verbal slips, subtitles, on-screen graphics and rendering the final cut
Skills, a CLI and an MCP server that let Claude Code or Codex make video from a brief: editing, graphics, voiceover, subtitles
Comparison with similar tools
Cards that share the main search query, and how they differ.
| Tool | Official | Repository stars | Main difference |
|---|---|---|---|
| Velocut (this card) | no | 451 | |
| OpenVideo | no | 117 | a different video tool; Velocut adds editable 3D direction and an agent edit history |
| Remotion Agent Skills | no | 6,903 | teaches an agent to write video as code in Remotion; Velocut provides a live studio with a timeline |
README in short
The studio combines a multitrack video editor, an editable 3D Director and a programmable project runtime. Manual edits and agent work go through the same editing services, one project document and one undo history.