The advantage of putting an autoplay video above-the-fold on your website’s home page
Here are three websites that use an autoplay video above-the-fold to tell their stories visually:
Icon Aircraft
High Point University
GlowForge
In all three cases, note how:
You learn important points about the product almost instantly, without words. For example, with Icon Aircraft you learn that the plane can land in water, and also works at a normal airport, and can be folded onto a trailer for easy towing
It is an extremely inviting, no-effort way for a visitor to learn about the product. No reading and no mental effort is required.
A call-to-action button is an obvious thing for the user to click