It was drone footage. Definitely some of the best I've seen. The tornado would have been virtually impossible to see without it.
As for the second question, I want to say that what we're seeing is really strong inflow, but after watching it a few times I think it's the larger circulation of the tornado. I'm not as well versed as others, but it looks like the Bear's Cage to me: basically the precipitation wrapping around the updraft, with the actual tornado (condensation funnel) in the center.