Your video reminded me of a 50 mile canoe journey, called "The Voyageur," we took in Boy Scout Camp over 50 years ago. It was supposed to be a three and a half day trip, but since it was raining like a monsoon, we did not start out the normal first day and waited for what was normally the second day.
Anyway, we were instructed to use our canoe paddles to knock off dead branches from trees that were well under the leaf canopy, this to get the driest kindling possible as everything was so thoroughly soaked. Also in science classes, we had already been taught that when the surface area of things were the largest, they oxidized/burned more readily.
So I combined that information and got the driest twigs from under the leaf canopy, then smashed them between the dried surfaces of two rocks to increase the surface area. Had no problems getting the fire started that way.