"Eric Lee. 2005. Designing time-based interactions with multimedia. In Proceedings of the 13th annual ACM international conference on Multimedia (MULTIMEDIA '05). ACM, New York, NY, USA, 1037-1038. DOI=10.1145/1101149.1101363 http://doi.acm.org/10.1145/1101149.1101363" The current model of time in multimedia frameworks poses particular problems when designing multimedia systems with time-based interaction. We propose to expand and extend an existing distinction between semantic time and real time from music and film theory to multimedia systems design. The semantic time concept also forms the foundation of a new software framework for multimedia systems that we are building, that, unlike most existing frameworks, includes mechanisms for time-based effects such as time-stretching.

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