Wix has released a great new tool called the Hoverbox, which is essentially a super customizable rollover button. Here I show you how to add a Hoverbox, and how to add elements/animation/video to the regular or hover’ed instance. Learn more in my Wix Designer blog:
https://www.picklewix.com/single-post/2017/01/04/Wix-Rollover-Buttons-Hoverbox

Note: the Wix Hoverbox is still in Beta mode, so it is not yet available to all Wix editors, but Wix hopes to release it this month (January 2017).