To add video, create a content page and select Media layout on the left. You can choose between the following content blocks: single video, video with text, video on the left, and video on the right.
You can upload videos from your PC, add from Library, or embed them from Youtube or Vimeo.
Available storage for video upload to the Library
Free - Not available
Starter - 1 Gb
Pro, Team, Enterprise - Unlimited
Check out Video Upload Guidelines for more details on supported file types etc.