The information accompanying the video identifies the lighthouse as Cape Elizabeth Lighthouse. While the two lighthouses in the video are on or near Cape Elizabeth, they are not usually called that. The one on land is the Portland Head Light, and the one in the water is Ram Island Ledge Light. Cape Elizabeth Light is at the end of the Cape, and is actually Two Lights, except that the Coast Guard royally screwed up the rear one. Edward Hopper painted both Portland Head and Two Lights.
Owl's Head Light is also on Cape Elizabeth, as is Portland Bug Light.
The area is a lighthouse lover's Paradise.
-Joe-