Ad delivery platform OneSource now allows publishers to serve video ads using DoubleClick DART and Microsoft Atlas Ad Manager, the company announced today. OneSource, which allows publishers to serve ads from multiple sources, can connect any ad server to its platform and extend its capability to video, CEO Amir Ashkenazi told me in an interview after the Beet.TV Online Video Roundtable last week.

By using an existing display ad servers for video, publishers don’t have to spend hundreds of thousands of dollars on a new ad server to monetize video–a cost-saving measure especially important in our current economy, according to Ashkenazi. "We think especially in those times, you need to maximize and open all your opportunities and cut the cost, and this is what we do in every step of the way," he says.

Kelsey Blodget, Associate Producer