Simple Video Downloader

Built on yt-dlp - a powerful open-source video downloader.

Prerequisites

This skill requires yt-dlp to be installed. Before proceeding:

1. Check if yt-dlp is available:

   yt-dlp --version
   

2. If not installed, let the user decide how to handle it:

   • Install via: pip install yt-dlp or download binary from yt-dlp releases
   • If user has no Python, they may prefer alternative approaches (browser extensions, online services, etc.)

Do not install yt-dlp for the user. Let them choose their preferred method.

Workflow

1. Get info: Run yt-dlp -j <URL> for metadata, yt-dlp -F <URL> for available formats
2. Analyze: Check resolution, duration, chapters, subtitles/danmaku availability
3. Ask user: Use question tool to confirm options
4. Build command: Construct and execute the download command

Common Options

Option	Purpose
-f "bestvideo+bestaudio"	Best quality video + audio merge
--write-subs --sub-lang danmaku	Download danmaku (Bilibili)
--write-thumbnail --embed-thumbnail	Download and embed cover
--embed-metadata	Embed video metadata
-x --audio-format mp3	Extract audio as MP3
--cookies-from-browser chrome	Use browser cookies for premium content

Output

Save to _Output/ directory:

-o "_Output/%(title)s [%(id)s].%(ext)s"

Tips

• Chapters: Embedded in video by default. Do NOT use --split-chapters (creates messy leftover files)
• Bilibili: 4K/1080P60 requires premium membership. Ask about danmaku preference
• Verify: Use ffprobe to check downloaded file details

Reference

For detailed yt-dlp options, see: references/usage-guide.md