G42 (16).mp4 -

: You can use a tool like MediaInfo to view the file's hidden data, such as the date it was created, the camera model used, and the exact resolution.

: Check your Downloads history or Recycle Bin to find the original "g42.mp4" file, which might provide context on where this 16th version came from. g42 (16).mp4

: Your browser or operating system likely added (16) because there were 15 previous versions of a file named "g42.mp4" in the same folder. : You can use a tool like MediaInfo

Could you clarify where you or what software generated it so I can provide more specific details? How to Create and Open an MP4 File the camera model used