The video appears to show the reconfiguration of the ISS, which takes place in order for new components to berth, or when space needs to be made for future commercial or cargo vehicles. The ISS crew last set about doing this in late May, when multiple modules were being shuffled around and a new docking port was built in order to dock two spacecraft at the space station simultaneously.
What makes this especially striking to watch is the Earth underneath. The increased speed of the video makes the whole thing look more like a sci-fi animation film than an ordinary, snail-pace docking video.
There is a bit in the middle where the docking sequence is reversed to the music.