Oh believe me, I've seen so many videos and read so many documents online trying to understand this. Most talk about an infinite array of inductors and capacitors, and most show inductors also on the bottom segment of the line (the video you posted shows inductors only on the top segment).
But still there's doubts, for example: I see on tutorials the formula to calculate characteristic inductance as: Zo=Sqrt(L/C), with L and C being per unit length. Looking at this transmission line at your video, how do you find the inductance and capacitance per unit length? Do I measure the inductance of the entire cable and then divide by the cable's length, then measure the capacitance of the entire cable and divide by the cable's length?