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+# 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)**