I've been attempting to insert an embedded YouTube video into a three-part slideshow on the front page of one of our microsites using the 'Video Link' property of the slideshow sections, but am only getting an empty, borderless frame on preview. I've tried a variety of things, including adding YT's embed codes, using Vimeo, and cutting off various bits of the URL.

Is this function actually supported in v6.x.x? If so, how might I go about coercing it into working?