Perceived QoS

Impact of end devices on subjective video quality assessment for QCIF video sequences

Asiya Khan, Lingfen Sun, Jose Oscar Fajardo, Ianire Taboada, Fidel Liberal, Emmanuel Ifeachor
Third International Workshop on Quality of Multimedia Experience (QoMEX2011). Mechelen, Belgium. September 7-9

<span lang="en">The aim of this paper is to assess the impact of devices on Quality of Experience (QoE) of the user. As the types of video content viewed over handheld devices increases e.g. streaming video, it is important to evaluate the impact of the end device on video quality assessment. In this paper subjective tests were conducted with QCIF (176x144) videos over two devices 6 Personal Computer (PC) and mobile handset with 90 test conditions. The dataset was generated with a combination of parameters associated with the access network (block error rates and mean burst lengths), H.264 codec related parameter (sender bitrates) and content types. Subjects favoured PC test over handset test in almost all test scenarios. It was found that as the content activity increases device matters. These studies should help in context-aware services in deciding the encoding parameters based on type of device being used to receive content.</span>

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