$(document).ready(() => {
let width = $(window).width(100%);
let height = $(window).height(100%);
$(«#videoBackground»)
.width(width)
.height(height);
});

$(window).resize(() => {
let width = $(window).width(100%);
let height = $(window).height(100%);
$(«#videoBackground»)
.width(width)
.height(height);
});