Currently, the media consumption paradigm is changing
from a single end user to a group shared experience. Now, social communication opportunities
may be exploited (e.g., conferencing while watching television), facing lots of
technological (e.g., synchronization, universal session handling, scalability)
and perceptual (e.g., presence awareness, QoE) challenges.
This article focuses
on one of these major challenges ahead in new emerging social interactive
multimedia applications, which is the synchronization of different media
streams across multiple locations, known as inter-destination multimedia synchronization
(IDMS). A description of three kinds of temporal multimedia synchronization, and a summary of some related work and examples of applications in which IDMS is
needed is provided.
This article includes a discussion about an RTP/ RTCP-based
IDMS solution the authors have been working on, as well as the standardization status
regarding this kind of synchronization.
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