Html5 background video and mmenu plugin is buggy in Chrome. What to do?

Question

Google Chrome

Need help with the following.
There is a background video and there is an mmenu plugin. In Firefox, when you open the page, the video is shown. If you click on the menu, the video moves and the menu is displayed. That is, everything is fine.
And in Chrome, the video does not play. It starts to play if you press the control panel and the play button.
How to overcome this collapse and make the video play in chrome from the very beginning. I must say right away that if you disable the js script mmenu, the video goes back to Chrome