This is an early Michel Gondry video when he was still starting out. They talk about it a little in the special features on his director’s series dvd (which I think you can netflix, well worth it). From what I remember the zooms are a type of morph from one shot to another. Each shot was set up to be a CU within the previous shot or a continuation of the story “move”. Most of Gondry’s work is just preproduced to death, the amount of planning done to pull off amazing feats with otherwise normal effects blows my mind. Wish I could add further explanation, but thats the limit to what I know about the video.