This is the second version of one of the most-shared water and sound videos on YouTube. A soft rubber hose is taped to a powered speaker so the water stream is shaken at the tone frequency, and a camera running at 24 frames per second captures the stream as a frozen zigzag or as beads that appear to crawl upwards.
The description is unusually honest about what is going on. The effect cannot be seen with the naked eye; it only works through the camera, because the frame rate and the vibration frequency are matched. It also notes that a strobe light would make the same thing visible to the eye directly. That is exactly the stroboscopic principle our own phased-strobe rigs rely on, and this video is a neat demonstration of it with almost no equipment.
It is worth being clear with visitors that this is not sound sculpting water into a standing shape. It is aliasing, and it is still a lovely trick.