22Jul2018 03:14:44 Z
The left sound channel is horizontal acceleration. The right: vertical. The video shows the vertical and horizontal axes correctly.
The video runs at 10 times real time speed.
This is a magnitude 5.2, 72.5km deep, earthquake, 20 km east of Nelson
It was recorded about 133km distant in Kapiti, New Zealand.
The S wave arrives about 7.12 seconds after the P wave.
133km / 7.12 seconds = 18.7km per second of PS difference.
Turn it up.