If this is a file you found on your device or a shared drive, you can try checking the (right-click > Properties on Windows, or Get Info on Mac) to see the "Date Created" or "Origin," which might give you a clue about where it came from.
: Specific brands often use alphanumeric strings to catalog clips. g4_01255.mp4
: Sometimes associated with specific archives or forum attachments. If this is a file you found on
: Files uploaded to services like Google Drive or Dropbox without a manual name change. g4_01255.mp4