That's a balk (video)

[Tom H.]

I don't know about every pick off throw shown as not all give enough information (for me) --- that being said I can say that one in the middle of the vidio which was a view from 'home plate' area I certainly have a balk. His pivot foot DOES NOT gain direction more towards 1B than home. In fact it appears to me as if it is directly home. The thing that I don't understand -- with at least 3 umpires it was not called. Seems very strange....