Exploring the acceptability of the audiovisual quality for a mobile video session based on objectively measured parameters

Although Quality of Experience (QoE) plays a major role in the design and development of mobile applications and services, QoE assessment is still challenging, especially in real-life (so called `living lab´) contexts. This paper presents results from an exploratory, interdisciplinary study on QoE and more specifically, on the acceptability of varying audiovisual qualities during video watching on a mobile device, in a realistic setting. The subjectively measured acceptability is modeled by means of a decision tree which uses information about the network type, transport protocol, technical video characteristics, and user behavior. The proposed model may contribute to the estimation of users´ subjective evaluation of the quality during mobile video watching and to QoE optimization by dynamically altering the parameters that have the largest influence on this subjective evaluation.