Video telephony for end-consumers: Measurement study of Google+, iChat, and Skype

Yang Xu, Chenguang Yu, Jingjiang Li, Yong Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Video telephony requires high-bandwidth and low-delay voice and video transmissions between geographically distributed users. It is challenging to deliver high-quality video telephony to end-consumers through the best-effort Internet. In this paper, we present our measurement study on three popular video telephony systems on the Internet: Google+, iChat, and Skype. Through a series of carefully designed active and passive measurements, we are able to unveil important information about their key design choices and performance, including application architecture, video generation and adaptation schemes, loss recovery strategies, end-to-end voice and video delays, resilience against random and bursty losses, etc. Obtained insights can be used to guide the design of applications that call for high-bandwidth and low-delay data transmissions under a wide range of "best-effort" network conditions.

Original languageEnglish (US)
Title of host publicationIMC 2012 - Proceedings of the ACM Internet Measurement Conference
Number of pages14
StatePublished - 2012
Event2012 ACM Internet Measurement Conference, IMC 2012 - Boston, MA, United States
Duration: Nov 14 2012Nov 16 2012

Publication series

NameProceedings of the ACM SIGCOMM Internet Measurement Conference, IMC


Other2012 ACM Internet Measurement Conference, IMC 2012
Country/TerritoryUnited States
CityBoston, MA


  • measurement
  • video conferencing

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications


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