The perceptual quality of mobile video is affected by many factors, including codec selection, compression rate,
network performance and device characteristics. Given the options associated with generating and transmitting mobile
video, there is an industry requirement for video quality measurement tools to ensure that the best achievable quality is
delivered to customers. International standards bodies are now considering alternative multimedia perceptual quality
methods for mobile video. In order to fairly evaluate the performance of objective perceptual quality metrics, it is
important that the subjective testing provides stable and reliable subjective data. This paper describes subjective studies
examining the effect of viewing distance in subjective quality assessment of low resolution video.
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