How does the YouTube video downloader work?

The YouTube downloader resolves metadata and available adaptive or progressive formats for a public video or Short, then lets the user select a permitted MP4-with-sound, video-only, or audio option. It is intended for content the user owns or has explicit permission or a license to save.

Yt-dlp runs server-side to resolve stream information and files are proxied to the browser through network-safety controls. Private, members-only, age-gated, DRM-protected, deleted, or region-blocked videos may not resolve, and platform changes can interrupt extraction. Downloading does not override YouTube terms or copyright.