Network Capacity Estimators Predicting QoE in HTTP Adaptive Streaming
Laine, S., & Hakala, I. (2022). Network Capacity Estimators Predicting QoE in HTTP Adaptive Streaming. IEEE Access, 10, 9817-9829. https://doi.org/10.1109/ACCESS.2022.3145185
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IEEE AccessDate
2022Copyright
© IEEE, 2022
The aim of adaptive HTTP streaming technology is preserving the best possible video streaming quality for viewers in heterogeneous network conditions. This can be achieved by making multiple quality versions of the video available. Switching between versions during playback should be imperceptible and fluent. The decision about quality-level switching is typically based on network capacity estimation and buffer occupancy, which predict the risk of stalling. Since quality-level switching and stalling are directly evident to the user, they are often classified as influence factors of quality of experience (QoE). In this paper, we observe different network capacity estimators and buffer behavior in limited network conditions and study how the estimators predict QoE. The challenges of variable bitrate (VBR)-encoded video are considered. We also propose two new estimators to predict QoE. One compares segment fetch time to segment playback time, while the other explores the difference of throughput and average download rate. As segment duration may influence HTTP adaptive streaming (HAS) playback in unstable conditions, the findings are tested with four segment lengths. Moreover, streaming quality is analyzed in a testbed using two popular web players to reveal possible effects of the players’ features.
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Institute of Electrical and Electronics Engineers (IEEE)ISSN Search the Publication Forum
2169-3536Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/104043379
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