Set key photo/ poster frame for videos in macOS Monterey Photos?
Apple seems to have tossed out the ability to set a poster frame for a video in the Photos app (macOS Monterey v12.01). Used to be able to click on the cogwheel in the video player control panel (Catalina), or right-click a frame in Edit mode (Big Sur). Those options have annoyingly disappeared, and would simply like to see something other than a blank black poster frame.
Thanks to anyone who knows the secret!
iMac 27″, macOS 12.0