Most modern platforms (like Instagram, TikTok, or WhatsApp) don't save your videos as "My_Vacation_Video.mp4." Instead, they assign a UUID for several reasons:
Random identifiers make it harder for unauthorized users to guess the URL of a private video. A404da2f 16f4 4076 9796 04c745345cfd mp4
Services like Google Photos or iCloud sometimes use these IDs as internal file names. Most modern platforms (like Instagram, TikTok, or WhatsApp)