Video Background Not Working

Hi I am trying to use a video background from youtube but it is not working. I have tried it using the full-screen slider, the full width slider and a color section, all with the same result.
The video plays because I can hear it (using your example youtube link but only with the slider – not with the color section) but it does not show. It only shows black or a color of the overlay. I would like to use the color section so the controls are not active (play/pause)
I tried it on another site using Enfold, and it works fine.
I tried de-activating the caching and security plugins, and still same results.