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Developing a predictive model of quality of experience for internet video

Published: 27 August 2013 Publication History

Abstract

Improving users' quality of experience (QoE) is crucial for sustaining the advertisement and subscription based revenue models that enable the growth of Internet video. Despite the rich literature on video and QoE measurement, our understanding of Internet video QoE is limited because of the shift from traditional methods of measuring video quality (e.g., Peak Signal-to-Noise Ratio) and user experience (e.g., opinion scores). These have been replaced by new quality metrics (e.g., rate of buffering, bitrate) and new engagement centric measures of user experience (e.g., viewing time and number of visits). The goal of this paper is to develop a predictive model of Internet video QoE. To this end, we identify two key requirements for the QoE model: (1) it has to be tied in to observable user engagement and (2) it should be actionable to guide practical system design decisions. Achieving this goal is challenging because the quality metrics are interdependent, they have complex and counter-intuitive relationships to engagement measures, and there are many external factors that confound the relationship between quality and engagement (e.g., type of video, user connectivity). To address these challenges, we present a data-driven approach to model the metric interdependencies and their complex relationships to engagement, and propose a systematic framework to identify and account for the confounding factors. We show that a delivery infrastructure that uses our proposed model to choose CDN and bitrates can achieve more than 20\% improvement in overall user engagement compared to strawman approaches.

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        Published In

        cover image ACM SIGCOMM Computer Communication Review
        ACM SIGCOMM Computer Communication Review  Volume 43, Issue 4
        October 2013
        595 pages
        ISSN:0146-4833
        DOI:10.1145/2534169
        Issue’s Table of Contents
        • cover image ACM Conferences
          SIGCOMM '13: Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
          August 2013
          580 pages
          ISBN:9781450320566
          DOI:10.1145/2486001
        Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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        Publication History

        Published: 27 August 2013
        Published in SIGCOMM-CCR Volume 43, Issue 4

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        Author Tags

        1. human factors
        2. measurement
        3. peformance
        4. video quality

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