Since the founding of ACM SIGMM in 1993, ACM Multimedia has been the worldwide premier conference and a key world event to display scientific achievements and innovative industrial products in the multimedia field. At ACM Multimedia 2014, we will celebrate its twenty-second iteration with an extensive program consisting of technical sessions covering all aspects of the multimedia field in forms of oral and poster presentations, tutorials, panels, exhibits, demonstrations and workshops, bringing into focus the principal subjects of investigation, competitions of research teams on challenging problems, and also an interactive art program stimulating artists and computer scientists to meet and discover together the frontiers of artistic communication.