If you are referring to a specific video you have encountered, it may fall into one of these common categories for that naming convention:

: Mobile applications like Video Splitter or Story Cutter often generate numbered filenames (e.g., part_28180.mp4 ) when breaking long videos into smaller segments for WhatsApp or Instagram stories.

: Numerical strings are frequently used as channel descriptors in IPTV playlists and OTT provider lists.