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Publication Detail
Designing a large-scale video chat application
  • Publication Type:
  • Authors:
    Scholl J, Parnes P, McCarthy JD, Sasse MA
  • Publisher:
    ACM Press
  • Publication date:
  • Place of publication:
    New York
  • Pagination:
    71, 80
  • Editors:
    Zhang H,Chua TS,Steinmetz R,Kakanhalli M,Willcox L
  • Status:
  • Name of conference:
    MM'05 - 13th annual ACM international conference on Multimedia MULTIMEDIA '05
  • Keywords:
    multimedia, usability, video
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 aformative evaluation of the prototype with 53 users in a social setting. We focus the evaluation on bandwidth and v iew navigation requirements in order to determine how to better se rve users with video chat,and discuss how the findings from this evaluation c an 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.
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