There is a specific workaround for video in DFP here: Using Hype with DoubleClick ads & video - #3
For Youtube, please see the solution here: Guide on how to make a Videobanner compatible with DFP using Tumult Hype - #19 by alexandre.lemay
Here's our DFP tutorial which is a great place to start: Howto: Deploying Hype animations to DoubleClick Studio