Abstract
A typical multimedia presentation involves an integration of a variety of data types represented in different media forms such as text, graphics, audio, video, etc. Audio and video in particular impose certain temporal constraints in their presentation in order to convey the desired message. When some of the multimedia objects needed in the presentation are to be retrieved from distributed multiple sources over a network, issues such as bandwidth limitation, network delays, low quality of service, user interaction, etc. become problems that may lead to synchronization difficulties.
We present some predictive mechanisms that can be used to ensure synchronization in network-based multimedia presentations in the presence of distributed multiple sources of data, limited network bandwidth, statistical network delays, and asynchronous user interaction. The various network problems are modelled as bounded probabilistic delays. Using an interval based presentation schedule, the mechanisms predict the optimal time to initiate the request for the multimedia objects. This guarantees that the required objects will be available at the time of their presentation, regardless of network problems. Using the notion of global presentation graph, the concept of hypermedia linking, and the hierarchical modelling power of the Petri net representation, we describe how asynchronous user modification of the presentation sequence can be supported. We also provide algorithms that capture special effects based on the presentation graph.
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© 1996 Kluwer Academic Publishers
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Adjeroh, D.A., Lee, M.C. (1996). Synchronization and User Interaction in Distributed Multimedia Presentation Systems. In: Nwosu, K.C., Thuraisingham, B., Berra, P.B. (eds) Multimedia Database Systems. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0463-0_9
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DOI: https://doi.org/10.1007/978-1-4613-0463-0_9
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