Time-Compression: Systems Concerns, Usage, and Benefits

With the proliferation of online multimedia content and the popularity of multimedia streaming systems, it is increasingly useful to be able to skim and browse multimedia quickly. A key technique that enables quick browsing of multimedia is time-compression. Prior research has described how speech can be time-compressed (shortened in duration) while preserving the pitch of the audio. However, client-server systems providing this functionality have not been available. In this paper, we first describe the key tradeoffs faced by designers of streaming multimedia systems deploying timecompression. The implementation tradeoffs primarily impact the granularity of time-compression supported (discrete vs. continuous) and the latency (wait-time) experienced by users after adjusting degree of time-compression. We report results of user studies showing impact of these factors on the averagecompression-rate achieved. We also present data on the usage patterns and benefits of time compression. Ove...

• Type: Conference
• Year: 1999
• Where: CHI
• Authors: Nosa Omoigui, Liwei He, Anoop Gupta, Jonathan Grudin, Elizabeth Sanocki
• Keywords: CHI 1999, Human Computer Interaction, Multimedia, Multimedia Streaming Systems, Online Multimedia Content