15May2015 05:34:35 Z
The left sound channel is horizontal acceleration. The right: vertical. The video shows the vertical and horizontal axes correctly.
The video runs at 21 times real time speed.
This is a magnitude 4.6, 16km deep, earthquake, 5 km south-east of Seddon
It was recorded about 121km distant in Kapiti, New Zealand.
The S wave arrives about 19.18 seconds after the P wave.
121km / 19.18 seconds = 6.3km per second of PS difference.
Turn it up.