[Mountaineer]

I don't know about video, but the federation has a computer program that is pretty good. You can set up about any senario and it will run through the mechanics of the situation for base and plate umpires in 2, 3 and I think 4-man crews. You can slow it down and basically go step by step if you want. I think it's about $40 or maybe less - I purchased it for our local board a few years ago when I was serving as our rules interpreter. While it's not perfect it is pretty good and IMO worth the price.