Tremor Network is readying to make ripples in video advertising, and parent company ARG Holdings has prepared the ground for Tremor's planned contextual ad network by buying design studio Asphalt Jungle. ClickZ reports that Tremor will begin selling video advertising across a yet-unnamed group of sites. Asphalt Jungle will provide creative support for video campaigns on the network, which consists of some 300 or so sites with 40 million monthly unique users and 500 million pageviews, according to the company.