Right-click the file and select Properties (Windows) or Get Info (Mac) to see the "Date Created," which might give you a hint about what you were doing when it was saved.

Since I can't see the video, let's "put together a story" based on the most common scenarios this type of cryptic filename represents: Scenario 1: The Digital Ghost

Look at the folder where you found it. If it's in /WhatsApp/Media , it's a video sent by a contact.

If you want to know what is actually in that specific file:

In this story, the file is a "corrupted" memory. A user finds this string of characters on an old hard drive. When they finally get it to play, it's not a video of a person, but a series of time-lapse photos of a room changing over ten years—furniture moving, walls being painted—all while a single plant in the corner stays perfectly still. The filename is the encrypted timestamp of the day the house was sold. Scenario 2: The Accidental Evidence