On : Right-click the file, select Properties , and go to the Details tab to see the creation date and length.
Since the filename is just a string of numbers, you can use these methods to figure out what the video is: 1_4918353903201812868.mp4
Use universally compatible players like VLC Media Player or KMPlayer , which can decode almost any MP4 file without needing external codec packs. On : Right-click the file, select Properties ,
On : Select the file and press Command + I to view the file inspector. On : Right-click the file
Could you provide or what you expect the video to be about so I can give you more specific details? How to play MP4 files in Windows - Microsoft Support