There are many things to like about QuickTime X, and many improvements were included over QuickTime Pro 7. In Preview: Press 'Command-N' (or select File > 'New from Clipboard').Press 'Command-C' (or select Edit > 'Copy').In QuickTime Player: Pause on the frame you want to capture (use arrow keys to go forward/backward by 1 frame).
In recent versions, to grab a frame, do the following: Update: More recent versions of QuickTime Player have the ability to copy frames of the video by using 'Command + C'.