Embedded Video in a Portfolio Post on Home Page

Hello, I am wanting to add an embedded video on this site: http://medullazu.com/

This theme pulls portfolio items but does not directly support embedded videos on the homepage.

As you can see it simply takes you to the post with the video. It does pull the thumbnail from the video.

What I would like to do is embed a video directly or make it so clicking the image causes a video lightbox to popup.