Hey Ciaran,
Just a question
In the template options you can choose a background for the different modules.
Teamplates --> Joomla 51 Teamplate --> General --> Modules/Component Styling
Top-1 Background Image
Top-2 Background Image
Top-3 Background Image
…
Would it be conceivable that you create a "Background Video field" for future templates?
So that it`s possible to place a simple video as a module background.
For Example: https://stock.adobe.com/at/video/acquisti/17309071
Kindly,
Chris