How can I take a snapshot of the last frame of a video? I have a video clip and I would like export the last frame for further processing with Gimp. How can I extract or take a snapshot of the last frame of a video?

I'm interested in solution on Mac or Linux.
On the frame you would like to save, press F12 to render (you can also press Render image in Render at the top of the window, or Render in Properties > Render settings > Render):



Then press F3 to save the resulting image.

Note that this will take other strips into account.