The market for online video ads continues to grow rapidly as more advertisers shift their spending from TV to the web. Google unsurprisingly wants to own its share of this market. In order to court large brands who want to buy against premium online video content, the company on Wednesday announced the launch of its own programmatic ad exchange for video ads under the name Google Partner Select. Google argues that while publishers invest in premium, high-quality video content, this content isn’t always easy to access for advertisers. “Our brands and agencies want to buy this premium content programmatically, but have difficulty finding the high quality inventory they want,” Google’s VP of display and video advertising products Neal Mohan writes in a blog post.