# Oh My Cassette

> Oh My Cassette is an open-source AI video editing plugin and local MCP server for Claude Code, Codex, Hermes Agent, and OpenCode. It turns natural-language chat into finished montage videos on Cassette (https://trycassette.online) — beat-synced cuts, auto-matched music, subtitles, transitions, and picture-in-picture.

The plugin runs locally beside the agent and handles media ingestion, edit planning, and job supervision; editing and rendering happen on the Cassette cloud service. Each editing turn returns a timeline delta, a CTL digest, and a contact sheet as the per-turn preview, so an edit can be reviewed before anything renders. The runtime emits no editor deep link, and agents must not construct one. MIT licensed. Requires a Cassette account.

## Docs

- [README](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/README.md): overview, case videos with prompts, and per-host install guides (Claude Code, Codex, OpenCode, Hermes, any MCP host)
- [Changelog](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/CHANGELOG.md): release history
- [Showcase](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/docs/showcase.md): six real case videos with the exact prompt, inputs, and processing time for each
- [Support and scope](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/SUPPORT.md): what this plugin covers versus the hosted Cassette service, and where to report what
- [Contributing](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/CONTRIBUTING.md): development setup and guidelines
- [Development and troubleshooting](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/docs/development.md): configuration reference, transports, diagnostics, common runtime problems

## Try it

- [Public web demo](http://43.134.224.156:8080/): the full workflow in a browser, no install (evaluation only)
- [Cassette](https://trycassette.online): the AI video editing service the plugin drives

## Optional

- [简体中文 README](https://github.com/Cassette-Editor/oh-my-cassette/blob/main/README.zh-cn.md)