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Designing a Large-Scale Video Chat Application

Scholl, J; Parnes, P; McCarthy, JD; Sasse, MA; (2005) Designing a Large-Scale Video Chat Application. In: Zhang, H and Chua, T-S and Steinmetz, R and Kankanhalli, MS and Wilcox, L, (eds.) Proceedings of the 13th annual ACM international conference on Multimedia MULTIMEDIA '05. (pp. 71 - 80). ACM: USA: New York. Green open access

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Abstract

Studies of video conferencing systems generally foc us 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.

Type: Proceedings paper
Title: Designing a Large-Scale Video Chat Application
Event: 13th annual ACM international conference on Multimedia
Location: Singapore
Dates: 6-12 November, 2005
ISBN: 1-59593-044-2
Open access status: An open access version is available from UCL Discovery
DOI: 10.1145/1101149.1101160
Publisher version: http://doi.org/10.1145/1101149.1101160
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Chat, video conferencing, bandwidth sharing, collaboration
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/20292
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