iMovie : Cutaway Opacity Slider

Yes, that is very interesting. I was able to replicate your situation by switching back and forth from full screen to regular screen. I started by placing a photo above the main clip and then selecting Cutaway from the overlay function options. The opacity slider displayed in its proper place and I was able to adjust the opacity with the slider. Then I switched to full screen display and when I switched back to regular screen display the opacity slider was located way to the right as in your screen shot. I couldn't get it to correct. So I closed and reopened iMovie. When I attempted to re-add the cutaway option to the overlaying photo the opacity slider appeared for a moment in its correct place and then moved way to the right again just as you had observed. I was able to correct it by removing the overlaying photo from the top timeline, placing it in the bottom timeline, and then moving it back to the overlay position and re-adding the Cutaway option. Then the Opacity slider appeared in its proper place.

Until your post I had never noticed this anomaly before. Hopefully the above procedure will work for you in solving it.

-- Rich

I find that if I movie the top vid to the timeline and then close iMovie, when I reopen iMovie I can move the video back on top, select it, and the Cutaway overlay opacity slider will appear in its proper place. Try following that sequence and see if it works.

I am using iMovie 10.1.12 with Mojave. This is a curious bug.

-- Rich

Can you explain what you mean when you say that moving the overlaying photo from top to bottom timeline "doesn't work" for you? Are you saying that you cannot move the photo or are you saying that moving and replacing it back doesn't help?

I guess we need to avoid switching back and forth to full screen when using the cutaway overlay feature.

-- Rich

You are welcome. The relaunch procedure didn't fix the bug but at least it got us feasible workaround.

Best,

Rich