answer to all the questions: russia

My guess: he climbed out of a window above the entrance of a commieblock then fell somehow. The camera is at the door somewhere.

But, it looks like he was thrown, or at least jump, from that salto mortale he does.

My guess: the video is fake, he felt from standing right next to the bench but somebody edited this fall to look like it was from above.

It's actually just a drunk getting up from the bench where he slept and someone edited the fall onto the footage.

its a static camera at the entrance of the appartment, there are a lot of those now.

it happened in Salavat city, which is why woman is saying "уф, аллаҡайым!" in Bashkir language, meaning "oh my God!", maybe she was standing just below the camera at the entrance

IMMA THROW YOUR FAMILY IN A HOLE IN THE GROUND AND SET THEM ON FIRE