Some capabilities: https://www.navy.mil/navydata/fact_display.asp?cid=4350&tid=500&ct=4
From the video I doubt they were using that particular style drone. It appears to be taken from a low altitude and rather close to the ship. (Notice the pan near the end of the video.)
That being said. I can easily purchase a low endurance video capable drone that will fit in the palm of my hand. And that’s a civilian model.