To: mdv921
I've since discovered it has something to do with my system display settings. I've always had the setting for "change the size of text, apps, and other settings" to 150% otherwise everything on the screen is so small I can't see it. When I change that setting to 100% the video frame goes back to the way it's supposed to be. Now the question is why has it suddenly changed when I haven't made any changes to my system settings at all?