Video/Footage Option for background?

Hello,

Just purchased this theme and threw out my other theme (Salient). What struck me right away is the fact that I cannot even add a footage background (video in background instead of a picture). I look everywhere, and checked the forums and there’s nothing written about it. This theme has everything but no capability to allow a video (aka footage) in the background?

Please let me know if I am just blind and didn’t spot the option. I’m also not talking about an embedded video box. I’m talking about full screen video (example https://instal.com/, just click web site background if the video doesn’t start).

Please help me! Thanks in advance for looking :)