# MPV Immersion Tracker for Language Learning

A Lua script for MPV that helps you track your language learning immersion sessions. The script uses a manual keybinding to start/stop tracking, giving you full control over when to log your sessions.

## Features

- **Manual Session Control**: Press `Ctrl+t` to start/stop immersion tracking
- **Session Tracking**: Records start/end times, duration, and progress
- **Comprehensive Logging**: Tracks video metadata, formats, resolution, and more
- **Resume Support**: Continues tracking if you stop and resume watching later
- **CSV Export**: Saves all session data to a CSV file for analysis
- **Real-time Progress**: Monitors watch progress and saves periodically
- **MPV Integration**: Uses only MPV's built-in functions - no external dependencies
- **MPV Options**: Configure everything through MPV's standard configuration system

## Installation

1. **Locate your MPV scripts directory**:
   - **Linux/macOS**: `~/.config/mpv/scripts/`
   - **Windows**: `%APPDATA%\mpv\scripts\`

2. **Copy the script file**:

   ```bash
   cp immersion-tracker.lua ~/.config/mpv/scripts/
   ```

3. **Restart MPV** or reload scripts with `Ctrl+Shift+r`

## Configuration

## Data Output

### CSV Format

The script generates a CSV file with the following columns:

| Column       | Description                        |
| ------------ | ---------------------------------- |
| Session ID   | Unique identifier for each session |
| Title        | Video title or filename            |
| Filename     | Original filename                  |
| Path         | Full file path                     |
| Duration     | Total video duration in seconds    |
| Start Time   | Session start timestamp            |
| End Time     | Session end timestamp              |
| Watch Time   | Total time spent watching          |
| Progress     | Percentage of video watched        |
| Video Format | Video codec                        |
| Audio Format | Audio codec                        |
| Resolution   | Video resolution                   |
| FPS          | Frame rate                         |
| Bitrate      | Video bitrate                      |

### Session Files

- **Current session**: `data/current_session.json` (for resuming)
- **Backup files**: Previous sessions are backed up automatically

## Session Management

### Starting a Session

- Press `Ctrl+t` to start tracking
- The script will gather current video information
- Session data is saved immediately
- On-screen message confirms tracking has started (if enabled)

### Stopping a Session

- Press `Ctrl+t` again to stop tracking
- End time and total watch time are calculated
- Data is saved to CSV
- On-screen message shows completion percentage (if enabled)

### Resume Support

- If you stop watching and restart later, the script can resume tracking
- Progress is maintained across sessions
- Previous session data is preserved

## Advanced Features

### Auto-save

- Session data is saved every 10 seconds (configurable)
- Ensures data isn't lost if MPV crashes
- Graceful shutdown handling

### Progress Tracking

- Real-time watch progress monitoring
- Seek detection and position tracking
- Duration and completion percentage
- Configurable progress milestones

### On-screen Messages

- Configurable confirmation when tracking starts/stops
- Progress information displayed
- Milestone notifications (optional)

### Session Naming

- Use media title or filename
- Custom prefixes
- Length limits
- Automatic truncation

## Data Analysis

### CSV Analysis Tools

- **Spreadsheets**: Open in Excel, Google Sheets, or LibreOffice
- **Python**: Use pandas for data analysis
- **R**: Import and analyze with RStudio
- **Command line**: Use `awk`, `sed`, or `csvkit`

### Example Queries

```bash
# Total watch time
awk -F',' 'NR>1 {sum+=$8} END {print "Total watch time:", sum, "seconds"}'

# Most watched content
awk -F',' 'NR>1 {print $2}' | sort | uniq -c | sort -nr

# Daily progress
awk -F',' 'NR>1 {print $6}' | cut -d' ' -f1 | sort | uniq -c
```

## Future Enhancements

- **Database support**: MySQL/PostgreSQL integration
- **Web dashboard**: View statistics in a browser
- **Export formats**: JSON, XML, or custom formats
- **Advanced analytics**: Watch patterns, learning goals
- **Cloud sync**: Backup data to cloud storage

## Contributing

Feel free to submit issues, feature requests, or pull requests to improve the script.

## License

This script is provided as-is for educational and personal use.

## Support

For issues or questions:

1. Check the console for error messages
2. Verify your MPV configuration
3. Check file permissions and paths
4. Review the troubleshooting section above
5. Check `mpv.conf.example` for configuration examples