NDLI: Light-weight stream synchronization framework for multimedia collaborative applications

Content Provider	IEEE Xplore Digital Library
Author	Gonzalez, A.J. Adbel-Wahab, H.
Copyright Year	2000
Description	Author affiliation: Dept. de Ingenieria Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso, Chile (Gonzalez, A.J.)
Abstract	Today's Internet best-effort services introduce unavoidable uncertainties in the data transfer delay and create the need for synchronization mechanisms that preserve the temporal relationship among streams of distributed multimedia applications. We present algorithms for stream synchronization that are immune to moderate clock skew between sender and receivers and take into account the different time constraints of each media. In our time model, we introduce the idea of a virtual observer, which perceives the session as being in the same room with a sender. We propose policies for delay management and special consideration is given to the time the algorithms take to reach steady state. We avoid the need for globally synchronized clocks for media synchronization by introducing the concept of user's multimedia presence, which defines a new manner for combining streams coming from multiple sites. Finally, we evaluate this framework with traces collected from the Internet.
Starting Page	398
Ending Page	403
File Size	717527
Page Count	6
File Format	PDF
ISBN	0769507220
DOI	10.1109/ISCC.2000.860670
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-07-06
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Streaming media Collaboration Synchronization Clocks Application software Transport protocols Delay effects Web and internet services Time factors Steady-state
Content Type	Text
Resource Type	Article

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