Right-click the file and select Properties > Details (Windows) or Get Info (macOS) to see if there is any encoded information about the camera, software, or date it was created.
The string "72d5e021..." is likely an MD5 or SHA-1 hash used to uniquely identify a file in a database. 72d5e021b3cc08b5b3f73cfb88266503.mp4
If you have this file and are trying to determine its origin or what it contains, you can use these methods: Right-click the file and select Properties > Details