Is there a way to view the videos in full screen?

Yes, there certainly is. At the top right of the video frame there is a little double arrow icon.  Click that to go to fullscreen view. To go back to the normal view, hit the ESC (escape) key, or click the same icon again. The control bar of the videos will disappear while you are watching for unimpeded viewing.  Just move the mouse across the screen for access to the video controls.