Could you give some more info? Are these YouTube vids? Or served via the <video> element? Either way, yes, they can easily be made responsive even just with CSS.
sorry If I posted it here, because I'm also thinking maybe I can modify the css/jquery codes and make it responsive.
Or do you know a free jQuery plugin @ralph that offer photo & video lightbox that also responsive?
I was really thinking in terms of a simple scenario where you have a YouTube video embedded on your page. It's easy to make it responsive by giving it a width of 100% and placing bottom % padding on the container to keep the container open.
Bookmarks