Although you can do all kinds of fancy stuff with Beaver Builder please use your common sense. Don't over do it.
Just because you can doesn't mean you should...
Ken Burns Slideshow
The moving image at the top of this page is a slideshow using the Ken Burns effect. This is a good compromise between a video and a still background. It looks fancy without going crazy.
Using Beaver Builder you can add video backgrounds to your page element in just a couple of minutes. But please remember the reason for your site. You want to get your message across.
Keep It Simple Stupid!
KISS has been my rallying cry for as long as I can remember. Before I use a fancy effect I always want to know if the site visitor will benefit if I include this fancy feature. Too often, the answer is no.
This slideshow looks nicer than most, don't you think?
What, so you really want all of this fancy stuff?
If I was you I'd checkout the Beaver Builder website. They sell great looking tools to help you build your website fast.