using Safari and the SuperTab video won't play, you can try the following:
1) In Safari, click
Safari →
Preferences...
2) Click
Click Privacy →
Manage Website Data
3) Scroll to youtube.com or use the search box to find it
4) Select youtube.com and click Remove → Done
5) Quit Safari
6) Re-open Safari and the video should now play.
If all else fails, you can simply watch the video on
YouTube.