Do you have about where you found this file or are you trying to recover a lost video ?
Right-click the file and select Properties (Windows) or Get Info (Mac) to see the "Date Created" or "Location" where it was filmed. 56EC4783-A3DE-4BF3-9435-2EBD75852A33.MP4
The .MP4 extension indicates it is a standard digital multimedia container used for video and audio. Do you have about where you found this