The OS for the users range from Win 7 to Win 8.1. Browser is ie11. Always works right for admin users no matter what machine. Works for 1 regular user no matter what machine. Fails for all other users no matter what machine. Video lives on a media server. SharePoint is 2013.
I can open ie as admin and another browser window on the same machine as a regular user and have them side by side and the admin user will see the video and the regular user will get an error or see nothing.