Somewhere towards the end he mentions snow shoes. The very first thought that came into my mind when i saw the opening sequence.
A bit later he said something about "hard going" while plowing through the snow, still without.
1. I guess no one told him that square format does not work for landscapes.
2. Look at how much work it is to compose for square format.
3. Was there a second, unseen umbrella to shield the video camera lens?
4. That would imply an unseen assistant, as well.
Seriously, that guy is having enormous fun. I'm envious.