COLOGNE — With the explosion of premium video content, consumed across multiple devices, the advertising marketplace has reached a sort of liquidity, explains Doug Knopper, co-founder and co-CEO of FreeWheel, in this video interview.

FreeWheel was founded in 2007 and was acquired by Comcast last year.

We spoke with Knopper in Cologne where the company is an exhibitor at DMEXCO.

DMEXCO '15 Presented by FreeWheel, DMEXCO '15