When I watched it, there were two sets of text - one was the large font (starts white then yellow/pink/green) on the middle of the screen which looks like part of the video and then at the top there was what looked more like normal subtitles white on black. I just clicked on the link and didn't adjust any settings so I don't know if it's a setting issue ( I don't have a youtube acount and was not logged in) but if it's something you can control your side, get rid of the top subtitle one.
It was very distracting as it diverts attention. I didn't know where to look - the person, the main text or the subtitle.
I would leave the camera on the speaker. Throughout it someone was speaking and you'd then show someone listening. With three characters and it a short video it becomes confusing. Most of those videos are on the speaker and only cut to the listener for a real 'reaction' shot. The listeners weren't 'reacting' (As in pulling faces or anything of substance) so there was too much chopping about which was confusing and unnecessary.
Generally I thought the speaking was a bit fast and could do with a little slowing down to make the speech clearer.