Measurements and analysis of end-to-end Internet dynamics
Measurements and analysis of end-to-end Internet dynamics
Quality of Service for VOIP: Measuring and Evaluating Packet - Switched Services
Quality of Service for VOIP: Measuring and Evaluating Packet - Switched Services
Measuring Bottleneck Link Speed in Packet-Switched Networks
Measuring Bottleneck Link Speed in Packet-Switched Networks
Delay-based congestion avoidance for TCP
IEEE/ACM Transactions on Networking (TON)
End-to-end differentiation of congestion and wireless losses
IEEE/ACM Transactions on Networking (TON)
Sharp or smooth?: comparing the effects of quantization vs. frame rate for streamed video
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Tmix: a tool for generating realistic TCP application workloads in ns-2
ACM SIGCOMM Computer Communication Review
Smooth and efficient real-time video transport in the presence of wireless errors
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
The big picture on small screens delivering acceptable video quality in mobile TV
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Study of subjective and objective quality assessment of video
IEEE Transactions on Image Processing
Impact of Frame Loss Position on Transmitted Video Quality: Models and Improvements
MUE '11 Proceedings of the 2011 Fifth FTRA International Conference on Multimedia and Ubiquitous Engineering
Optimal quality adaptation for scalable encoded video
IEEE Journal on Selected Areas in Communications
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
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We introduce a framework for managing the QoE of videos coded with the H.264 codec and transmitted by video conferencing applications through limited bandwidth networks. We focus our study on the medium-motion videos with QCIF, CIF, and VGA resolutions, the most pervasive video formats used by video conferencing applications across the Internet and cellular telephony systems. Using subjective tests for measuring the level of video quality perceived by end users, we expose the relation between the main influential video parameters and the quality experienced by end users. Furthermore, after investigating the effect of different frame rates and compression levels on video streaming bit rate, and consequently on QoE, we propose a QoE control mechanism for limited-bandwidth situations. A congestion control technique is also introduced in this paper and used in simulations for verifying the efficiency of the proposed QoE management algorithm and to implement this algorithm for practical applications.