I have no doubt that a small number of foreigners live and work in North Korea, move around freely without minders, and are allowed to have cameras and make videos, but how do they get the footage out? Even if they work at some university and have access to the internet, I very much doubt it's unrestricted like that.

I am willing to believe some of them might smuggle it out, but this guy walks around and behaves like it's nobody's business.