Or even in modern movies with CGI-enhanced characters.

Gollum moves as if his enormous head was empty, because the actor doing the motion capture didn't wear a heavy helmet.

In "Rust and Bones", Marion Cotillard plays a character that loses her legs after an accident, and she has her legs removed by CGI, but there are scenes where she's carried by Matthias Schoenaerts that look unnatural, out of balance.

I see this frequently even in newer movies/tv--when actors are drinking out of empty coffee cups.

That's a great example. I wonder how much of that is due to the (lack of) the weight of the coffee, vs. not having to compensate for sloshing liquid that could spill if you aren't careful.

Could it be slightly sped up? The robots do make jumps so one could calculate it from that.

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.