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+# MetaMesh Plugin: Language
+
+A MetaMesh plugin that aggregates languages from all streams and determines the primary language.
+
+## Description
+
+This plugin collects language information from video, audio, and subtitle streams extracted by the FFmpeg plugin. It:
+
+- Converts language codes to ISO 639-3 format
+- Aggregates all detected languages into a set
+- Determines the primary language (first audio stream)
+- Maps titles to their detected language
+
+## Metadata Fields
+
+| Field | Description |
+|-------|-------------|
+| `languages` | Set of all detected languages (ISO 639-3) |
+| `primaryLanguage` | Primary language code |
+| `titles/{lang}` | Title mapped to language |
+
+## Dependencies
+
+- Requires `ffmpeg` plugin to run first
+
+## Configuration
+
+No configuration required.
+
+## API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/health` | GET | Health check |
+| `/manifest` | GET | Plugin manifest |
+| `/configure` | POST | Update configuration |
+| `/process` | POST | Process a file |
+
+## Running Locally
+
+```bash
+npm install
+npm run build
+npm start
+```
+
+## Docker
+
+```bash
+docker build -t metamesh-plugin-language .
+docker run -p 8080:8080 metamesh-plugin-language
+```
+
+## Environment Variables
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `PORT` | `8080` | HTTP server port |
+| `HOST` | `0.0.0.0` | HTTP server host |
+
+## License
+
+MIT