Bilibili & YouTube Watcher — 双平台字幕提取

从 Bilibili（B站）和 YouTube 视频中提取字幕/转录文本，支持多语言、会员视频和内容问答。

When to Use This Skill

• User shares a Bilibili link and wants subtitles or a summary
• User shares a YouTube link and wants transcript extraction via yt-dlp
• User needs subtitles from member-only (大会员) Bilibili videos
• User wants to search or query content within a video's transcript
• User wants to compare subtitles across languages
• User needs to extract subtitles from videos with hardcoded subs (OCR not included — only soft subs)
• User wants batch subtitle extraction from a playlist or series

Prerequisites

Install yt-dlp

yt-dlp is a feature-rich command-line audio/video downloader that also extracts subtitles.