Interactive Distributed Multimedia Systems (IDMS) and Protocols for Mul- media Systems (PROMS) have been two successful series of international events bringing together researchers, developers and practitioners from academia and industry in all areas of multimedia systems. These two workshops successfully merged in 2003 and now constitute the MIPS workshop. After the outstanding MIPS 2003 workshop, organized in Naples, Italy, by GiorgioVentreandRobertoCanonico, fromtheUniversityofNaplesFedericoII, MIPS2004movedtoGrenoble, France. Followingthegreattradition, MIPS2004 was intended to contribute...