If you click within the video player with your mouse, you can use the tab button on your keyboard to highlight the ‘play’ button (yellow box).
Once the 'play' button is highlighted you can use the space bar or the enter buttons on your keyboard to play or pause the video.
You can also use the left arrow key to rewind and the right arrow key to fast-forward through a video when it plays.
You can't fast-forward through the ad breaks.