Intrastream synchronization for continuous media streams: a surveyof playout schedulers
Laoutaris, N.; Stavrakakis, I.
Network, IEEE
Volume 16, Issue 3, May/Jun 2002 Page(s):30 - 40
Digital Object Identifier 10.1109/MNET.2002.1002997
Summary:The transmission of real-time streams over best effort networks
has been an interesting research area for over a decade. An important
objective of the research community has been to devise methods that cope
with the variations of the network delay-also called delay jitter-that
are an inherent characteristic of best effort networks. Jitter destroys
the temporal relationships between periodically transmitted media units,
that constitute a real-time media stream, thus hindering the
comprehension of the stream. Playout adaptation algorithms undertake the
labor of the temporal reconstruction of the stream, which is sometimes
referred to as the restoration of its' intrastream synchronization
quality. This article surveys the work in the area of playout
adaptation, aiming to concisely organize ideas that have been presented
in isolation and identify the main points of differentiation among
different schemes. The survey, discusses issues related to timing
information, handling of late media units, quality evaluation metrics,
and adaptation to changing delay conditions
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