It took extreme cinematographer Devin Graham, a.k.a. Devin SuperTramp, four months to set up his latest adrenaline-pumping, three-minute video.

It’s the world’s largest urban zip line, and it requires riders to BASE jump off of it after four seconds, in order to avoid a crash landing at the other end of the 2,000-foot line, where the wire was attached to a car.

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“There’s never been a zip line done like this in a city before — when you take over a gigantic building and shut down a major freeway — so we brought on the right people and they had to do a lot of research to make sure it would be safe,” Graham told The Blaze.

The line stretches from an 800-foot skyscraper in Panama City, Panama, over a marina and a highway. The producers picked Panama City in part because the city allowed them to close down the highway during filming.

A range of cameras capture the feat via helicam, helmet cams, and cameras attached to various buildings. During practice runs, one helmet cam dropped to the ground, as did a pair of one of the diver’s sunglasses.

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“Ever since I was a little kid, I was borrowing my parents’ cameras to get the shot that no one else could,” The Daily News quotes Graham, who has 2.3 million YouTube subscribers and has generated more than 390 million views on his site.

Photo: YouTube screen grab