Reading through the comments and reviewing the video does indeed point to arcing power lines. Ive seen videos of fast moving arcs across medium voltage lines that looked like a horizontal jacobs ladder. The lines over current protection equipment might not instantly trip as the current might be limited by enough impedance in the equipment. Disappointing reveal.

That sounds plausible.

>I figured, with the advent of cameras everywhere we would have much more evidence of them by now

The prevalence of phone cameras in the modern world has shown that:

-Bigfoot doesn't exist.

-Police brutality does.

There must be a relevant xkcd....

Cell phone with no zoom?

The convincing bit to me is the few frames you see when the ball "collapses".

They do at 0:25