Mixing video ad formats is a good idea — you know that. If your goal is to drive maximum reach and video completions, what mix of video ad formats would you use?

You’d use masthead ads and non-skippable in-stream ads.

You’d use masthead ads and bumper ads. 

You’d use skippable in-stream ads and bumper ads. 

You’d use skippable in-stream ads and non-skippable in-stream ads.