Since the name is non-descriptive, you can check the file's metadata to learn about its origin:

Right-click the file, select Properties , and click the Details tab. You may find the "Date Created," which can help you remember when it was recorded. On Mac: Right-click and select Get Info .

If this is a personal video (like a security camera clip or a screen recording), it's best to rename it to something recognizable: Select the file and press (Windows) or Enter (Mac).

If you found this file online or received it from an unknown source:

Use a tool like MediaInfo to see the specific camera or software used to encode the video. 2. How to Open the File