First, hide the entire first section by navigating to Settings >> Design Settings >> Search Box / Call to Action >> Hide Entire Section:
Add the video as Custom Homepage Content. To start this process, navigate to Content >> Webpage Builder >> Edit Homepage:
Add the Video using the Coding Icon < >
In order to make the video larger and match the width of the rest of the elements in the homepage, replace the width and height:
Also make sure to remove or add a different Title H1 and Subtitle H2:
The last step will be to call this section as custom homepage content. To do this navigate to Settings >> Design Settings >> Homepage >> Select Content to Display >> Select: Custom Homepage Content
Now you can Visit the Site, the end result is the video above the fold:
