Expert skill for yt-dlp (youtube-dl fork) - a powerful command-line media downloader supporting 1000+ websites.
Use for: downloading videos/audio from YouTube, Bilibili, Twitch, Twitter, etc; format selection and conversion;
subtitle downloading and embedding; playlist handling; metadata embedding; cookies/authentication; SponsorBlock integration;
custom extractor development; understanding yt-dlp codebase architecture.
Examples: "download YouTube video 4K", "extract audio mp3", "yt-dlp best format", "embed subtitles",
"Bilibili downloader", "sponsorblock skip ads", "cookies authentication", "write custom extractor",
"XiaoHongShu download complete package"