Video Downloader (Universal)

Detects media sources on any website — video, audio, images, HLS/DASH streams. Provides in-browser downloads and CLI command generation for external tools. For popular sites (youtube, tiktok, instagram, etc.) automatically provides an optimised yt-dlp command via live-fetched site list.

For everything else, falls back to manual strategies with optional cookie injection.

Detection

• <video>, <source>, <audio>
• dl8-video (Delight VR)
• videojs, jwplayer, shaka players
• HLS (m3u8), DASH (mpd)
• Network request interception (fetch / XHR)
• Detached media elements (via document-start createElement hooks)
• Source refresh (re-fetches page HTML for token-refreshed URLs)

Strategies (per source)

Action (click to run)

• GM_download — browser native download (real TLS + cookies)
• Direct — <a download> trigger (cross-origin may open tab)
• Capture — captureStream() + MediaRecorder, records player in real-time → WebM (defeats Cloudflare)
• Tab — opens source URL in new tab
• Copy URL

CLI (copy & run in terminal)

• yt-dlp — generic extractor with impersonation, referer, UA, cookies
• N_m3u8DL-RE — https://github.com/nilaoda/N_m3u8DL-RE (best for HLS/DASH)
• aria2c, curl, wget, ffmpeg — with referer, UA, cookies

Features

• Grouped by type — detected sources are organised under section headers (HLS, DASH, Video, Audio, Image, Other)
• Cookie management — arbitrary {name, value} pairs persisted in GM storage; custom cookie editor UI
• Quick toggle — cookie inclusion in CLI commands can be toggled on/off with one click from the panel header (off by default)
• Native site detection — automatically detects 1000+ yt-dlp-supported sites and shows a tailored one-click command

Some formats may not work, hence the many fallback strategies.