A filter to add a youtube video background to your course This works well in many modern themes (bootstrap 3 and 4?) but due to the vast number used I'm leaving it up to you to check.
To use simple drag the Youtube_Page_background.txt (aka bundle) onto the green bundle button when making a new Generico filter.
To use in the course: Enter the atto editor (label, description etc) click the generico icon and select the "Youtube_Page_background" button where it says "W0LHTWG-UmQ" you need to paste in the embed code from the youtube URL. e.g. W0LHTWG-UmQ
Modified for Moodle by Vernon Spain
Code Sourced from http://thenewcode.com/500/Use-YouTube-Videos-as-Fullscreen-Web-Page-Backgrounds