He claims to have invented that spin blower, which is cool. I've seen how the Africans do this, and it requires basically an entire village to make one iron hoe using 2 goat skin forge blowers.
I'll go ahead and submit that video.
But building bellows is much harder. You would need a good skins and good leather crafting skills. I could not build a bellows with valves using primitive means, but I could probably build this blower.