The old joke when a defensive back drops an interception is that "If he could catch, he'd be a receiver."  

But, the truth is, to develop defensive backs that can catch instead of just get credited with a pass break up, there needs to be time to practice making interceptions.

The video comes from Coach Harlon Barnett's DB System found only on Glazier Drive.  The video clip below is from the DB Ball Drills lesson.  Coach Barnett is the Associate Head Coach and Safeties Coach at Northwestern.

In this video, the drills you will see practice film of are:

Out Route (Right and Left)
Out and Up (Right and Left)
180 to Speed Turn (Right and Left)
Dancing with the Stars

Drive to the receiver, don't stare at the quarterback.  In the drill, the QB is the coach throwing the ball.  Then, find the ball to make the play.

The out and up drill teaches players to cover an out and up route by playing the same techniques as the Out Route drill, but then "collison" the receiver as he breaks long  and high point the interception.