Cinematic question

[lagman]

Ok, so I was watching this Mexican documentary -En El Hoyo- yesterday and then I get to the last part of the film:


I just don't know how that was shot, I think it can't be an helicopter as it's flying way too close to an unfinished construction, a RC helicopter? Maybe, but it flies a long, long distance, so I'm not sure.
So, what do you think guys?

edit: damn youtube quality -_=

 

[kellyan95]

It's going fast - I'm saying a small 1 person helicopiter with a good camera. It's probably a lot higher than it looks because of zooming. Way to long/far a flight for a regular RC. Doubtful UAV.

 

[lagman]

Well, that makes sense -and sounds pretty cool,BTW

-.
Thank you.