How to change aspect ratio from 16:9 to 9:16 iMovie 10.1
i Created 16:9 movie and would like to play in Microsoft PowerPoint in 9:16 but once I played it, the whole screen has squeezed out, i.e. The images becomes taller and narrow. Can someone please help me out? Thanks allot!
MacBook Pro with Retina display, Mac OS X (10.1.x)