# KB Bilibili Content Skill

**kb-bilibili-content** - Download Bilibili videos and extract content.

## Features

- Video download using **yt-dlp** (recommended)
- Subtitle extraction
- Article content extraction
- Multiple quality options (360P/480P/720P/1080P)
- Supports `BILIBILI_COOKIE` environment variable

## Environment Variables

| Variable | Required | Description |
|----------|----------|-------------|
| `BILIBILI_COOKIE` | No | B站登录 Cookie (for member-only videos) |

## Commands

```bash
# Download video (720P default)
python bilibili_content.py --id "BV1xx411c7mD" --type video --output "/path/to/downloads/"

# Download video (1080P)
python bilibili_content.py --id "BV1xx411c7mD" --type video --quality 80 --output "/path/to/downloads/"

# Download video (480P)
python bilibili_content.py --id "BV1xx411c7mD" --type video --quality 32 --output "/path/to/downloads/"

# Extract subtitle
python bilibili_content.py --id "BV1xx411c7mD" --type subtitle --output "/path/to/subtitles/"

# Get article content
python bilibili_content.py --id "cv43780186" --type article --output "/path/to/article.md"
```

## Output

```json
{
  "success": true,
  "type": "video",
  "filename": "video_title.mp4",
  "filepath": "/path/to/downloads/video_title.mp4",
  "message": "下载完成: video_title.mp4"
}
```

## Cookie Setup

### Get Cookie from Browser
1. Login to bilibili.com
2. Press F12 → Network → Refresh page
3. Copy Cookie from request headers

### Set Environment Variable
```bash
# Add to ~/.bashrc for persistence
export BILIBILI_COOKIE="SESSDATA=xxx; bili_jct=xxx; DedeUserID=xxx; DedeUserID__ckMd5=xxx"

# Or set temporarily
export BILIBILI_COOKIE="your_cookie_here"
```

## Installation

```bash
cp -r kb-bilibili-content/ ~/skills/
pip install aiohttp playwright
playwright install chromium
```

## How It Works

Video download uses **yt-dlp** with Netscape-format cookie file:
1. Parses `BILIBILI_COOKIE` environment variable
2. Creates temporary Netscape-format cookie file
3. Runs `yt-dlp --cookies <file> -f <format> -o <output>`
4. Cleans up temporary file

## Quality Options

| Quality | ID | Resolution | Notes |
|---------|-----|------------|-------|
| 16 | 360P | 640x360 | Fastest |
| 32 | 480P | 852x480 | Default for low bandwidth |
| 64 | 720P | 1280x720 | **Recommended** |
| 80 | 1080P | 1920x1080 | Best quality |

Default quality: **64 (720P)**