def test_backwards_range(self):
        """
        Cut out the last 5 seconds of a media file by using negative number in the
        range.
        """
        self.main(["example.mp4"], ["--edit", "none", "--cut_out", "-5secs,end"])
        self.main(["example.mp4"], ["--edit", "all/e", "--add_in", "-5secs,end"])

        Cut out the last 5 seconds of a media file by using negative number in the
        range.
        
auto_editor/cmds/test.py