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Designing a large-scale video chat application
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
University College London.
University College London.
2005 (English)In: ACM Multimedia 2005: proceedings of the 13th ACM International Conference on Multimedia, November 6-11, 2005, Singapore, New York: ACM Digital Library, 2005, 71-80 p.Conference paper (Refereed)
Abstract [en]

Studies of video conferencing systems generally focus on scenarios where users communicate using an audio channel. However, text chat serves users in a wide variety of contexts, and is commonly included in multimedia conferencing systems as a complement to the audio channel. This paper introduces a prototype application which integrates video and text communication, and describes a formative evaluation of the prototype with 53 users in a social setting. We focus the evaluation on bandwidth and view navigation requirements in order to determine how to better serve users with video chat, and discuss how the findings from this evaluation can inform the design of future video chat applications. Bandwidth requirements are evaluated through user perceptions of video delivered using three different bandwidth schemes. For view navigation, we examine a system that automatically switches the video focus to the current "chatter", instead of requiring users to navigate manually to find the video steam they are interested in viewing.

Place, publisher, year, edition, pages
New York: ACM Digital Library, 2005. 71-80 p.
Research subject
Mobile and Pervasive Computing
URN: urn:nbn:se:ltu:diva-40065DOI: 10.1145/1101149.1101160Local ID: f0afcef0-a090-11db-8975-000ea68e967bISBN: 1-59593-044-2OAI: diva2:1013588
International Multimedia Conference : 06/11/2005 - 11/11/2005
Godkänd; 2005; 20060916 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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