Adap.tv has secured $13M in Series B venture funding. Led by Spark Capital, the Series B round also includes existing investors Redpoint Venture and Gemini Israel Fund. As part of the investment, Spark Capital General Partner Dennis Miller will join the Adap.tv board of directors. Adap.tv will use the financing to accelerate the development of its flagship offering Adap.tv OneSource and its adoption by video publishers and online ad networks.

The opportunity for online video advertising is significant. According to eMarketer, nearly 67 percent of US Internet users view online video ads at least once a month in 2008 and 129.5 million people will watch online video ads this year. By 2013, an estimated 183 million people in the US will watch online videos.

Following a $10M Series A round led by Redpoint Ventures and Gemini Israel Funds in July 2007, this investment makes Adap.tv one of the best capitalized companies in the video advertising space. Since Adap.tv launched OneSource in April, it has signed partnerships with leading video websites, including BitTorrent, Metacafe, DemandMedia, blip.tv and nearly 300 others. With Adap.tv as the latest portfolio addition, Spark Capital focuses on the conflux of the media, entertainment and technology industries with current investments including, Twitter, Veoh Networks and EQAL.

Adap.tv OneSource empowers online publishers to run ads in any format and from any source on their video content, without having to perform multiple ad network integrations or adopt special video serving technology. Publishers using Adap.tv can choose from a wealth of online video advertising formats, such as pre-roll video ads or overlay ads, to maximize revenue and protect the user experience. Ad sources may include the publisher's own sales team or any number of video, display or text ad networks.