Migrated to Windows 10 a couple of months ago. Tried to use/play iphone .mov video files on Movie Studio Platium 12 and all I get is the audio. The fix for this in the past has been to go back to an older version of Quicktime, so I have a saved version of QT 7.62.14.0 on my thumbdrive to do this. Installed this and it didn't work! Only thing different is Windows 10 as far as I can think. What should i do?