The VITE TV CODE.txt file is a plain-text document containing Xtream Codes credentials (server URL, username, and password) used to activate IPTV services on streaming apps like TiviMate or IPTV Smarters. These files enable users to configure apps to access direct channel lists, typically on Android TV, Fire TV Stick, and other smart devices, requiring only the input of credentials via the "Xtream Codes API" option.