: It compares the live list against its database to find "delta" (new) videos.
: Advanced bots like yt-playlist-downloader can skip files already present in the destination folder to save bandwidth. Youtube Playlist Downloader Bot
The core logic is written in Python, chosen for its extensive library support and asynchronous capabilities. The logic layer parses user inputs, sanitizes URLs, and manages the state of downloads. It employs the asyncio library to handle multiple user requests concurrently without blocking the main execution thread. : It compares the live list against its