To find more context (like the date it was filmed or the camera used), you can right-click the file and select "Properties" (Windows) or "Get Info" (macOS) to view the metadata . MP4 files explained: How to open and use - Adobe
If you have encountered this specific file on a storage device: Ajb06759 mp4
A chronological counter that indicates this was the 6,759th file recorded by that device. Extension (.mp4): The digital container format. The Role of the MP4 Format To find more context (like the date it