Background video’s as data attribute not iFrame before page load

Hi there,

Could you tell me if you have any suggestions concerning the link attached. We are looking at a way to block YouTube backgrounds on Elementor, we need a little help to see which javascript is responsible for setting the iFrame after page load, and how to block or replace the functionality and keep a still image as background as placeholder.

Either this topic, or via the link will be fine. Hope to hear from you, regards Aert

The page I need help with: [log in to see the link]