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