Is something weird going on with embedded YouTube vids at the moment?
I've just done put a couple in the Latest Trailers thread, and the preview image is black and nothing happens if clicked (and this is the same for all the other YT vids in there) - this is via my desktop chrome browser.
If I look using Tapatalk on my Android tablet, there's just a clickable link that says YouTube Video and when hit returns a Network error message.