Playing videos in Full Screen:
To view videos in Full Screen mode right mouse click within the video window whilst the video is playing to bring up a menu. Scroll down to Zoom and a sub-menu will open where you can select the Full Screen option. To stop viewing in Full Screen mode and return to the original mode press the Escape (Esc) key on your keyboard. Click the image below for a larger version.
Click the image above to view a larger version