# Video Watcher

> Fetch and read transcripts from YouTube and Bilibili videos. Use when you need to summarize a video, answer questions about its content, or extract information from it.

- Skill: `gabrielmoreira/video-watcher` (Agent Skill, multi-file: 4 files)
- Install (CLI): `npx skillmds@latest add gabrielmoreira/video-watcher`
- Raw SKILL.md: https://api.skillmd.com/api/skills/gabrielmoreira/video-watcher/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Research & Search
- Author: gabrielmoreira (https://skillmd.com/u/gabrielmoreira)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/gabrielmoreira/video-watcher

---


# Video Watcher

Fetch transcripts from **YouTube** and **Bilibili** videos to enable summarization, QA, and content extraction.

## Supported Platforms

- ✅ **YouTube** (youtube.com, youtu.be)
- ✅ **Bilibili** (bilibili.com, b23.tv)

## Usage

### Get Transcript (Auto-detect Platform)

```bash
python3 {baseDir}/scripts/get_transcript.py "VIDEO_URL"
```

### Specify Language

```bash
python3 {baseDir}/scripts/get_transcript.py "VIDEO_URL" --lang zh-CN
```

## Examples

### YouTube Video
```bash
python3 {baseDir}/scripts/get_transcript.py "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
```

### Bilibili Video
```bash
python3 {baseDir}/scripts/get_transcript.py "https://www.bilibili.com/video/BV1xx411c7mD"
```

### With Custom Language
```bash
# Get English subtitles for a Bilibili video
python3 {baseDir}/scripts/get_transcript.py "https://bilibili.com/video/..." --lang en

# Get Chinese subtitles for a YouTube video
python3 {baseDir}/scripts/get_transcript.py "https://youtube.com/watch?v=..." --lang zh-CN
```

## Default Languages

| Platform | Default Language |
|----------|-----------------|
| YouTube  | `en` (English)  |
| Bilibili | `zh-CN` (Chinese) |

## Common Language Codes

- `en` - English
- `zh-CN` - Simplified Chinese (简体中文)
- `zh-TW` - Traditional Chinese (繁體中文)
- `ja` - Japanese
- `ko` - Korean
- `es` - Spanish
- `fr` - French
- `de` - German

## Notes

- Requires `yt-dlp` to be installed and available in PATH
- Works with videos that have closed captions (CC) or auto-generated subtitles
- Automatically detects platform from URL
- If no subtitles available, the script will fail with an error message
- yt-dlp natively supports both YouTube and Bilibili