The left sound channel is horizontal acceleration. The right: vertical. The video shows the vertical and horizontal axes correctly.
The video runs at 11 times real time speed.
This is a magnitude 3.5, 52km deep, earthquake, 35km west of Levin, New Zealand
It was recorded about 44km distant in Kapiti, New Zealand.
The S wave arrives about 7.7 seconds after the P wave.
44km / 7.7 seconds = 5.7km per second of PS difference.
Turn it up.