Weaver’s Lightbox Action only works with images, not movies. I tried adapting it with no success (but I’m not a coder) and I have not seen anything from the Freeway community on how to achieve Lightbox for movies.
I’m sure it can be done, it just isn’t easily gotten at right now. If you have any coding skill I’m sure you can find one of the many ‘lightbox’ sites and have a go at it.