Trouble with transitions in iMovie.
I am using the cross dissolve transition in iMovie. I use the precision editor. Half the time it works beautifully. However, other times the transition throws in extra frames from clips that are not being used. I go back into transition editor to correct the problem. All looks good there, but when I play the transition again in the movie, the problem of extra frames from other clips (sometimes deleted clips) is still there.
What is going on and how do I fix this?
MacBook Pro 13", macOS 10.14