This appears to be a bug with the Chrome HTML5 player. Changing your video player to Flash should fix it, or just watch the videos in Firefox. I agree, though

This appears to be a bug with the Chrome HTML5 player. Changing your video player to Flash should fix it, or just watch the videos in Firefox. I agree, though, the video player overall is steps behind Youtube and others. I'd guess it's because they built their player from scratch (it being a core technology) and they have lots of kinds to work out to get it up to modern video player standards.