: It can hold video and audio tracks, as well as subtitles and still images.

: Many default camera apps use VID_ or IMG_ followed by this exact timestamp format.

If the file won't open, use a versatile player like the VLC Media Player which supports nearly all MP4 encoding types.

: Tools like OBS or Windows Game Bar often default to date-based filenames if a custom title isn't provided. Technical Details of the .mp4 Format

This naming convention is standard for many digital recording devices and software to ensure every file has a unique name based on the time it was saved.

If you have found this file and are unsure of its origin, you can check its to find clues:

the file and select Properties (Windows) or Get Info (Mac).

While the name is just a label, the .mp4 extension signifies that it is a .