5d712f535159251a73c03.mp4 Now
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: 5d712f535159251a73c03.mp4
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
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. 5d712f535159251a73c03.mp4