If you downloaded this from an unknown source, run a scan using tools like Malwarebytes before opening it.
The naming convention (a title followed by a number in parentheses and a file extension) is typical for automated backups from cloud services like Google Photos or messaging apps. You can manage and organize such files using the Google Photos Help Center . Girls Forever (742) mp4
If you are trying to of the video safely: If you downloaded this from an unknown source,