synchronized clip not showing in final video
I have synchronized 24 videos and cropped and resized each clip to fit on the screen (much like a zoom meeting screen). When I double click on the synchronized clip in the timeline, it opens up and shows and plays all clips. but when I close up the synchronized clip and play video from beginning, it just shows a blank screen where the 24 mini videos clips should be.
MacBook Pro 15”, macOS 10.15