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Fifth Annual Tcl/Tk Workshop, 1997

Nsync - A Constraint Based Toolkit for Multimedia

Brian Bailey and Joseph A. Konstan
Department of Computer Science
University of Minnesota


Nsync (pronounced 'in-sync') is a declarative multimedia synchronization toolkit, implemented entirely in Tcl, designed to ease the complexity of designing innovative, interactive multimedia applications. Nsync does not represent a new multimedia synchronization model; rather, it provides a set of building blocks in the form of temporal and non-temporal constraints useful for specifying both the synchronization and interaction properties of an application. Nsync depends only on the logical time system provided by the Berkeley Continuous Media Toolkit, thus allowing any application using a similar notion of time to also benefit from the Nsync constraint mechanism. Nsync presents a new and powerful environment for rapid development of highly interactive multimedia applications.
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