22May2018 17:59:16 Z
The left sound channel is horizontal acceleration. The right: vertical. The video shows the vertical and horizontal axes correctly.
The video runs at 45 times real time speed.
This is a magnitude 4.5, 17.3km deep, earthquake, 20 km north-east of Pongaroa
It was recorded about 121km distant in Kapiti, New Zealand.
The S wave arrives about 16.4 seconds after the P wave.
121km / 16.4 seconds = 7.4km per second of PS difference.
The M3.8 aftershock 4m42s after the larger earthquake is here.
Turn it up.