Sometimes you may want to take a screenshot from a Camtasia Studio project. For example, to use as a YouTube custom thumbnail. You don’t need to export the video first and then use a video player with screenshot support. Export frame option is available from within Camtasia.
First, go to the frame you want to capture.
From Share menu choose Export frame as or press CTRL+F
Choose the file type and click save. PNG is the default and probably the best option for most Camtasia Projects.