The link in this comment[0] shows the camera shaking well before the lights are flashing. Also, you can see the arcs of electricity in the flashes. Lightning is purple not bluish. Human made electrical systems make the bluish color. The flashes do not start until ~20s into the 39s video. How are we even coming close to these being "before" the earthquake?

[0]https://news.ycombinator.com/item?id=37485077