Hiya. I was wondering if you could do something about the z-index in the css of the iframe. The video thumb overlaps many of the elements of the page, for example the EU cookies (http://3doordigital.com/wordpress/plugins/eu-cookie-law/) and speakpipe (www.speakpipe.com) tabs. I can't seem to get any changes to work via css myself.
I've had this problem with youtube overlapping before, but the developer was able to put it right.