San Francisco-based Alphabird has acquired Sydney, Australia-based video ad developer Volt Media. Alphabird said the deal will expand its presence in the Asia-Pacific region. Volt’s video ad platform will give existing customers better Web and mobile options. Launched in 2011, Volt serves advertising content on an array of online video partners, including Dailymotion and Blip. It also has “preferred video partner status” with some of Australia’s biggest shops and trading desks, including Cadreon, Ikon and OMD.