The problem with pruning videos is all you really see is a guy jumping around the tree with a few larger limbs coming out. Sure you could do some cut ins to show the bigger limbs being lowered out, maybe a couple swings and limb walks, but in general it just isn't as dramatic as a removal.
I have a video of an Elm where we removed the dead and broken limbs, made soon after I got my gopro. The video is just a distant shot of the whole tree, and I sped up the footage to show how we move around the tree etc. It is something good for clients to see, and get an understanding of, but it is not going to go viral. To someone that is not an arborist, it would probably be pretty boring. I would think most pruning videos would be the same, without heavy editing and dramatic flair.