Quantifying Skype user satisfaction
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
IEEE Network: The Magazine of Global Internetworking - Special issue on improving quality of experience for network services
Skype Video congestion control: An experimental investigation
Computer Networks: The International Journal of Computer and Telecommunications Networking
Measurement study of multi-party video conferencing
NETWORKING'10 Proceedings of the 9th IFIP TC 6 international conference on Networking
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Enabling Composition-Based Video-Conferencing for the Home
IEEE Transactions on Multimedia
Video telephony for end-consumers: measurement study of Google+, iChat, and Skype
Proceedings of the 2012 ACM conference on Internet measurement conference
Video telephony for end-consumers: measurement study of Google+, iChat, and Skype
Proceedings of the 2012 ACM conference on Internet measurement conference
User-centric video delay measurements
Proceeding of the 23rd ACM Workshop on Network and Operating Systems Support for Digital Audio and Video
GamingAnywhere: an open cloud gaming system
Proceedings of the 4th ACM Multimedia Systems Conference
Google+ or Google-?: dissecting the evolution of the new OSN in its first year
Proceedings of the 22nd international conference on World Wide Web
Thin to win?: network performance analysis of the OnLive thin client game system
Proceedings of the 11th Annual Workshop on Network and Systems Support for Games
The Optimiser: monitoring and improving switching delays in video conferencing
Proceedings of Workshop on Mobile Video Delivery
The Optimiser: monitoring and improving switching delays in video conferencing
Proceedings of Workshop on Mobile Video Delivery
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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.