The left sound channel is horizontal acceleration. The right: vertical. The video shows the vertical and horizontal axes correctly.
The video runs at 30 times real time speed.
This is a magnitude 6.2, 52km deep, earthquake, 35 km south-east of St Arnaud, New Zealand
It was recorded about 214km distant in Kapiti, New Zealand.
The S wave arrives about 33.44 seconds after the P wave.
214km / 33.44 seconds = 6.4km per second of PS difference.
4.5Hz Mark Products geophone
Turn it up.