I was curious so I just timed the jump at the beginning of the song about 15 seconds in.

Assuming the jump is about 30cm, and I stopwatched it at 0.3 seconds from the apex to the ground, you arrive at an acceleration of 9.6m/s^2 which is basically spot on the acceleration due to gravity.

At 0:57 the camera pans to a position where you can see people on the upper floor walking by in the distance. You can see them move as the robot dance, which shows the video is not sped up. You could claim they were composited in (a suicidal move for BD, if they ever tried that), but if you look closely at the windows below, you can see the the camera crew in the reflection, who also move at the correct pace - and that shot would've been hell of a work to fake. In conclusion: this is real-time.