If the video is from vimeo, youtube or a direct link to an html5 supported format it should open in a lightbox automatically. What is the link you are trying to use and page it isn’t working on?
Here is the link to the video on youtube https://www.youtube.com/watch?v=dapy0p_OHEs and here is the link on the website http://higherpursuits.org/home/ I currently have the video on the server because it was just going to the youtube page. I have tried many different things without any luck.
Thank you for your help!