Reset Aspect Ratio in iMovie 10
I have been using iMovie for some time but now I need to work with a different aspect ratio -the old 4:3 ratio. I digitized some old family movies that were on VHS in this ratio. When I open iMovie I don't seem to get a choice. Anyone know how to do this. Seems fairly basic but I can't find a way. I'm working with Big Sur.
Thanks
iMac Line (2012 and Later)