3716mp4

Make sure the file actually ends in .mp4 . Sometimes files are renamed or have hidden extensions.

: It could be a specific ID used in a software platform or content management system for a video asset. 3716mp4

: Go to View in File Explorer and check File name extensions . Make sure the file actually ends in

: You can use the CloudConvert MP4 Tool for a quick online fix, or Handbrake for a more professional, desktop-based conversion. or Handbrake for a more professional