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ii Message from the General Chair Welcome to the First Multimedia Communications Workshop! The multimedia revolution is undoubtedly taking place. Never in history, in fact, humanity has had the opportunity of accessing so much audio and video content, from such a large variety of sources and for purposes so diverse that include both pure entertainment and scholarly pursuits. The multimedia revolution, however, is still far from being over; many issues remain open to debate and competing visions of the future continue to vie for supremacy. It is, therefore, the right time to discuss what is the future of multimedia delivery, quantitatively addressing questions such as the role of streaming in an increasingly download-based digital world, peer-to-peer multimedia communications, multimedia over ad hoc mobile networks, DVB-H, packet videoconferencing, video sensor networks, 3D television, car-to-car and car-to-roadside signal communications, and other evolving and emerging applications. The goal for this workshop is to offer a unique, focused opportunity to gather and discuss with peers the state of the art as well as the most interesting potential new directions of multimedia communications. We would like to thank all the authors who responded to the Call for Papers, regardless of whether thei