Slow down there, son.
the way private video's sorta work is you ask the creator of the video directly for a piece of his material. More than likely, if he's in a position to give the video to people, and he knows you won't spread it around TOO much, then he'll give it to you. (please note if he doesn't want to, you shouldn't get upset at all, probably nothing personal they just don't want people they don't know very well to have it. And the creator is a lot more likely to say 'yes' if he knows you/has seen your chops before and is impressed. )
Or you can always contact your local media dealer; same rule sort of applies, if they think your good they'll be more willing to give you vids. PS I don't reccomend the 2nd option I just suggested at all for Andrei's video's... respect it if he says no, and espeially don't take it personal.