Dealing with synchronization and timing variability in the playback of interactive session recordings

Engineering tests and scientific experiments use a variety of techniques to simultaneously record phenomena that frequently are not well correlated to the human's visual and cognitive timeframe. Therefore, the captured data are subsequently analysed in a different timeframe using, for example, slow motion or time lapse, and in some cases the playback rate is variable in a more complex manner. We term this condition time elasticity. We present methods to achieve synchronism amongst the range of media streams captured whilst consuming a low overhead of computing resource. These schemes allow for variable start times and extents for individual media streams as well as providing for variable time increments both within one medium and across a range of media elements. The techniques have been demonstrated within a system for the analysis of vehicle crash tests.

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“…Reported work that is relevant to our goals includes descriptions of conceptual models [4,5,8,10] and practical implementations [2,3,6,9,15].…”

Section: Background On Synchronisationmentioning

confidence: 99%

“…Methods for synchronisation involving audio streams are discussed in [2,9]. The latter describe a system that synchronises prestored streams, consisting in this case of an audio stream and image windows.…”

Section: Background On Synchronisationmentioning

confidence: 99%

Synchronised multimedia for engineering and scientific analysis

Athwal

Robinson²

2003

Multimedia Systems

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“…Synchronization has also been studied by Manohar and Prakash. 34 They study methods to enable the faithful replay of multimedia-objects under varying system parameters. To accomplish synchronization of different session objects, they provide an adaptive scheduling algorithm.…”

Section: Related Workmentioning

confidence: 99%

Collaborative multimedia documents: Authoring and presentation

Candan¹,

Prabhakaran²,

Subrahmanian³

1998

Int. J. Intell. Syst.

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“…The related research issues include data retrieval [15], delivery of media objects over a network [3,4,8,9,12,29,30], and temporal reasoning and media synchronization [1,25,27,33,36,37]. Also, multimedia authoring and presentation schedule creation have been studied by many researchers [2,6,16,17,19,20,21,24,26,34,38]. Similarly, derivation of retrieval schedules for distributed multimedia presentation has also been studied in many works, such as [17,19,28,29,30,31,35].…”

Section: Related Workmentioning

confidence: 99%

Retrieval schedules based on resource availability and flexible presentation specifications

1998

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A distributed multimedia document presentation involves retrieval of objects from one or more document servers and their presentation at the client system. The presentation of the multimedia objects has to be carried out in accordance with the specification of temporal relationships between the objects. The retrieval of multimedia objects from the document server(s) is influenced by factors such as temporal specification of objects presentations, throughput offered by the network service provider, and the buffer resources on the client system. Flexibility in the temporal specification of the multimedia document may help in deriving an object retrieval schedule that can handle variations in network throughput and buffer resource availability. In this paper, we develop techniques for deriving a flexible object retrieval schedule for a distributed multimedia document presentation. The schedule is based on flexible temporal specification of the multimedia document using the difference constraints approach. We show how the derived retrieval schedule can be validated and modified to ensure that it can work with the offered network throughput and the available buffer resources.

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Dealing with synchronization and timing variability in the playback of interactive session recordings

Cited by 17 publications

References 26 publications

Synchronised multimedia for engineering and scientific analysis

Synchronised multimedia for engineering and scientific analysis

Collaborative multimedia documents: Authoring and presentation

Retrieval schedules based on resource availability and flexible presentation specifications

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