Can't Get QuickTime to Trim
I have an intermittent problem.
I am recording my PowerPoint slides with voice over for video lectures for my students using my older MacBook Air (2014) running MacOS Catalina 10.15.4, using QuickTime Player, version 10.5.
When I finish a recording, I go back and trim the end of the recording where I am closing the PowerPoint slide show presentation.
I do this through the Trim tool under Edit>Trim. I have had no trouble trimming the video when the trim tool works.
About half the time, despite clicking on Trim in the edit menu, or using the "Command"-T keystroke, I cannot get the trim bar to open. I can save, close out of QuickTime and come back and I might be able to get the Trim bar to open or I might not.
Any ideas why it sometime opens up and other times will not respond?
The trim button is active (black) and not greyed out but still will not open the trim bar.
MacBook Air