Quantifying Skype user satisfaction
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Revealing skype traffic: when randomness plays with you
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Analysis of Skype VoIP traffic in UMTS: End-to-end QoS and QoE measurements
Computer Networks: The International Journal of Computer and Telecommunications Networking
Skype video responsiveness to bandwidth variations
Proceedings of the 18th International Workshop on Network and Operating Systems Support for Digital Audio and Video
Detailed analysis of Skype traffic
IEEE Transactions on Multimedia
IEEE Network: The Magazine of Global Internetworking - Special issue on improving quality of experience for network services
A detailed measurement of skype network traffic
IPTPS'08 Proceedings of the 7th international conference on Peer-to-peer systems
On traffic characteristics and user experience of Skype video call
Proceedings of the Nineteenth International Workshop on Quality of Service
Quality of Experience Models for Multimedia Streaming
International Journal of Mobile Computing and Multimedia Communications
Quality of experience management for video streams: the case of Skype
Proceedings of the 10th International Conference on Advances in Mobile Computing & Multimedia
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Skype nodes generate a substantial part of real-time bi-directional video traffic nowadays. Employing a range of adaptive mechanisms, the application configures video streaming to meet the requirements of the communication and constraints of the underlying network. While other related works focus on passive network monitoring of Skype data flows, this paper studies Skype as a point-to-point streaming engine of video, beyond standard video calling. The emphasis is on the objective video quality as perceived by viewers. We built a testbed to generate network perturbations and stream certain videos between Skype nodes. We examine how network impairments affect objective metrics (i.e. PSNR and SSIM index) of the video and Skype's ability to reconstruct the original sample. The results suggest that Skype is weak at delivering good quality for high motion videos and that it is slow at recovering after a long period of high packet loss.