Click on the video link
Copy the full YouTube link:
https://www.youtube.com/watch?v=Vp7U04zmiOY&feature=youtu.be
Remove the "s" in https and the "&" or "#" with all the code after.
http://www.youtube.com/watch?v=Vp7U04zmiOY
Ensure the forum text is set to "DHTML Form with xCode"
Click on the YouTube icon and paste-in your edited code.
Cycle through the remaining options.