# KV-Tube v3.0

> A lightweight, privacy-focused YouTube frontend web application with AI-powered features.

KV-Tube removes distractions, tracking, and ads from the YouTube watching experience. It provides a clean interface to search, watch, and discover related content without needing a Google account.

## 🚀 Key Features (v3)

- **Privacy First**: No tracking, no ads.
- **Clean Interface**: Distraction-free watching experience.
- **Efficient Streaming**: Direct video stream extraction using `yt-dlp`.
- **AI Summary (Experimental)**: Generate concise summaries of videos (Currently disabled due to upstream rate limits).
- **Multi-Language**: Support for English and Vietnamese (UI & Content).
- **Auto-Update**: Includes `update_deps.py` to easily keep core fetching tools up-to-date.

## 🛠️ Architecture Data Flow

```mermaid
graph TD
    User[User Browser]
    Server[KV-Tube Server (Flask)]
    YTDLP[yt-dlp Core]
    YTFetcher[YTFetcher Lib]
    YouTube[YouTube V3 API / HTML]

    User -- "1. Search / Watch Request" --> Server
    Server -- "2. Extract Video Metadata" --> YTDLP
    YTDLP -- "3. Network Requests (Cookies Optional)" --> YouTube
    YouTube -- "4. Raw Video/Audio Streams" --> YTDLP
    YTDLP -- "5. Stream URL / Metadata" --> Server
    
    subgraph Transcript System [Transcript System (Deferred)]
        Server -.-> YTFetcher
        YTFetcher -.-> YouTube
        YTFetcher -- "No Transcript (429)" -.-> Server
    end

    Server -- "6. Render HTML / Stream Proxy" --> User
```

## 🔧 Installation & Usage

### Prerequisites
- Python 3.10+
- Git
- Valid `cookies.txt` (Optional, for bypassing age-restrictions or rate limits)

### Local Setup
1. Clone the repository:
   ```bash
   git clone https://git.khoavo.myds.me/vndangkhoa/kv-tube.git
   cd kv-tube
   ```
2. Install dependencies:
   ```bash
   pip install -r requirements.txt
   ```
3. Run the application:
   ```bash
   python wsgi.py
   ```
4. Access at `http://localhost:5002`

### Docker Deployment (Linux/AMD64)

Built for stability and ease of use.

```bash
docker pull vndangkhoa/kv-tube:latest
docker run -d -p 5002:5002 -v $(pwd)/cookies.txt:/app/cookies.txt vndangkhoa/kv-tube:latest
```

## 📦 Updates

- **v3.0**: Major release. 
    - Full modularization of backend routes.
    - Integrated `ytfetcher` for specialized fetching.
    - Added manual dependency update script (`update_deps.py`).
    - Enhanced error handling for upstream rate limits.
    - Docker `linux/amd64` support verified.

---
*Developed by Khoa Vo*