Bilibili & YouTube Watcher

---

name: video-watcher description: 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. author: adapted from youtube-watcher version: 1.1.0 triggers: - "watch video" - "summarize video" - "video transcript" - "youtube summary" - "bilibili summary" - "analyze video" metadata: {"clawdbot":{"emoji":"📺","requires":{"bins":["yt-dlp"]},"install":[{"id":"brew","kind":"brew","formula":"yt-dlp","bins":["yt-dlp"],"label":"Install yt-dlp (brew)"},{"id":"pip","kind":"pip","package":"yt-dlp","bins":["yt-dlp"],"label":"Install yt-dlp (pip)"}]}}

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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)

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

Specify Language

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

Examples

YouTube Video

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

Bilibili Video

python3 {baseDir}/scripts/get_transcript.py "https://www.bilibili.com/video/BV1xx411c7mD"

With Custom Language

# 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

YouTube Video

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

Bilibili Video

python3 {baseDir}/scripts/get_transcript.py "https://www.bilibili.com/video/BV1xx411c7mD"

With Custom Language

# 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

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