NOSSDAV 2011 is the 21st anniversary of SIGMM's leading workshop on network and operating systems support for digital audio and video. The workshop, hosted at the University of British Columbia (UBC), will continue to focus on emerging research topics, controversial ideas, and future research directions in the area of multimedia systems research.

As in previous years, we will maintain the focused single-track format a setting that stimulates lively discussions among the senior and junior participants.

NOSSDAV encourages experimental research based on real systems and real data sets. Public availability of the source code and data sets discussed in papers presented at NOSSDAV is highly encouraged.

For NOSSDAV 2011, we will accept papers on broad ranges of topics related to the transmission and presentation of digital audio/video objects. We are particularly interested in soliciting articles that discuss system-level support for distributed social media, as well as papers that focus on enabling multimedia applications in distributed cloud.