GM Sir! Yes, that chicken tunnel is exactly what I'm talking about.
I made a tunnel at the edge of my garden with a 50 ft roll of 4 ft tall chicken wire. I tried several different things for securing the bottom, and supporting the arch. 2x4s work well, but it would cost quite a bit to go around the entire perimeter of my garden and between a few rows. The fencing alone is more than I want to spend, lol.
In the video you posted, they are using an old tire. I like that idea.
I'm trying to find a cheap way to make a 2ft radius support arch on the inside of the tunnel. I've priced round steel and aluminum rods, and I'm leaning that direction. I know there is a better way, I just haven't seen it yet.