# Changelog
All notable changes to YT-NINJA will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [1.0.0] - 2024-01-XX
### Added - Initial Release 🎉
#### Core Features
- **35 MCP tools** for comprehensive YouTube interaction
- **7 manager classes** for organized business logic
- **4 integration wrappers** (YouTube, GenAI, FFmpeg, Process)
- **Complete error handling** with descriptive messages and suggestions
- **Environment validation** on startup
#### Playback Control
- Play videos in browser or VLC
- Audio-only playback with loop support
- Play specific video segments with timestamps
- Stop and manage active playback sessions
#### Download Management
- Download videos in multiple formats (MP4, WebM, MKV) and qualities
- Extract audio in various formats (MP3, WAV, FLAC, M4A, OGG)
- Download thumbnails in highest resolution
- Download entire playlists (video or audio)
- Download channel videos (placeholder implementation)
- Extract video clips with precise timestamps
#### Transcript Processing
- Extract official subtitles/captions
- AI-powered transcript generation (placeholder - needs Whisper API)
- Multi-language transcript translation
- Timestamp-aligned formatting
- Audio extraction from videos
#### Data Retrieval
- Fetch comprehensive video metadata
- Get playlist information with total duration
- Retrieve channel statistics
- YouTube search with result count control
- Music-specific search with filtering
#### AI-Powered Analysis
- Video summarization with configurable length
- Automatic chapter generation (5-15 chapters)
- Keyword extraction with relevance scoring
- Topic detection with confidence scores
#### Media Processing
- Video format conversion (MP4, WebM, MKV)
- Audio format conversion (MP3, WAV, FLAC, M4A, OGG)
- Frame extraction at custom FPS (1-60)
- Audio trimming with timestamp precision
#### Advanced Features
- Real-time audio streaming without download
- Podcast mode (audio + transcript + summary + chapters + keywords)
- AI-powered video highlight generation
- Caption burning (placeholder - needs FFmpeg implementation)
#### Documentation
- Comprehensive README with installation and usage
- Complete tool reference (TOOLS.md) with 35 tool examples
- Quick start guide (QUICKSTART.md)
- Contributing guidelines (CONTRIBUTING.md)
- Troubleshooting section with common issues
#### Developer Experience
- TypeScript with strict mode
- ESLint and Prettier configuration
- Jest test framework setup
- Fast-check for property-based testing
- Build system with tsup
- Development and production scripts
### Known Limitations
- **Automatic transcription**: Placeholder implementation, requires Whisper API integration
- **Channel video listing**: Returns placeholder, needs YouTube API enhancement
- **Caption burning**: Placeholder implementation, requires FFmpeg subtitle filter
- **No tests**: Test suite not yet implemented (0 of ~40 property tests)
### Technical Details
**Dependencies:**
- @modelcontextprotocol/sdk ^1.23.0
- youtubei.js ^16.0.1
- @google/genai ^1.30.0
- fluent-ffmpeg ^2.1.3
- zod ^4.1.13
**Requirements:**
- Node.js >= 18.0.0
- npm >= 9.0.0
- FFmpeg (auto-installed)
- VLC (optional, for playback)
**Environment Variables:**
- GEMINI_API_KEY (required)
- DOWNLOAD_DIR (optional, default: ./downloads)
- TEMP_DIR (optional, default: ./temp)
- MAX_CONCURRENT_DOWNLOADS (optional, default: 3)
---
## [Unreleased]
### Planned Features
#### High Priority
- [ ] Whisper API integration for automatic transcription
- [ ] Channel video listing implementation
- [ ] Property-based test suite (~40 tests)
- [ ] Caption burning with FFmpeg subtitle filter
#### Medium Priority
- [ ] Unit tests for utilities and managers
- [ ] Integration tests for workflows
- [ ] E2E tests with real YouTube videos
- [ ] Performance optimizations (parallel downloads, caching)
#### Low Priority
- [ ] YouTube Shorts support
- [ ] Live stream recording
- [ ] Comment extraction and analysis
- [ ] Multi-language subtitle generation
- [ ] GPU acceleration for video processing
- [ ] Cloud storage integration (S3, Google Drive)
- [ ] Webhook notifications for long operations
### Potential Breaking Changes
None planned for v1.x releases.
---
## Version History
- **1.0.0** - Initial release with 35 tools and comprehensive YouTube interaction
---
## Contributing
See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines on contributing to YT-NINJA.
## Support
For issues and questions, please open an issue on [GitHub](https://github.com/your-repo/yt-ninja/issues).
