Use a video as a section background
The older classic editor allowed a direct MP4 URL in a section’s Video Background URL setting. That setting is not present in the tested KickoffLabs editor. KickoffLabs currently has video sections and a video hero that use YouTube or Vimeo URLs; these place a video in the page content, rather than behind a section.
For a KickoffLabs page, use a video section when the video itself is the content. Preview it on desktop and mobile, then test the published page. If your design specifically requires motion behind text, contact support to confirm a supported KickoffLabs route before relying on the classic MP4 background instructions.
For a page that still opens in the classic editor, select the section, open its design/background options, and use its Video Background URL field with a public direct MP4 file URL. Keep a readable image or color fallback and test on a slower mobile connection. A normal YouTube page URL is not a direct MP4 file URL.
Need help? Email support@kickofflabs.com with the page URL, editor type, and the video URL you intend to use.