When you paste a link into a downloader, the software sends a request to that web page, just like a browser does. It scans the page's source code (HTML, JavaScript, and metadata tags) to find direct links to the video files. Many platforms embed these links within specific JavaScript objects or data attributes. Sniffing Network Requests

The website creates an index file (like a .m3u8 or .mpd file) that acts as a map for these clips.

Inside each resolution profile is a chronological list of URLs pointing to tiny, 2-to-10-second video fragments (often .ts or .m4s files). 3. Bypassing Digital Rights Management (DRM) and Tokens

: It searches for direct media source links (like .mp4 files) or dynamic streaming manifests (like .m3u8 or .mpd files).