I use Apple’s Grab application to take screenshots. Naturally, when I needed to grab a preview frame from a video, I followed my usual workflow: open video, pause video, select frame, grab video window, copy video window, open image editing application, paste, etc. Then, I read this and realized I was doing it all wrong. I can copy a frame directly from QuickTime Player. No need to launch the Grab application. OK, that’ll save a few steps next time around.