So I added this via them customization to display on my homepage as the main top banner (instead of the default "Image Banner" option). Works fine and is exactly what I want, except now I need to add text over it (heading + subheading) and an action button. Looks like this will require custom code.
I tried to see if I could somehow use the Rich Text block over it, but doesn't appear to be an option (like it is for the "Image Banner").
Here's an example of exactly what I want https://heirloomroses.com/. Headers and an action button over the background video. Below is the custom liquid code I used to place the background video on my homepage: