Use header video instead of an image

Hello,

Thanks for this really wonderful theme first of all.

My question is, is it possible to use a video “header” instead of an image header for the different articles that the theme uses. I would love to have a video instead of an image on the main header for instance.

Is this possible? Is there any third party plugin that would allow me to do that? Is there some code I should/can tweak?

Thanks a lot.