CONTENT IS KING: THE EFFECT OF CONTENT ON THE PERCEPTION OF VIDEO QUALITY

摘要

This paper describes a study which examined the effect of video content on viewers’ perception of the picture and sound quality of that content. 40 participants viewed 20 different clips of major studio release movies that were 2 minutes in duration. Each clip was encoded at five different rates (490 kbps, 771 kbps & 1100 kbps, VHS and DVD). Each participant saw each clip only once and the level at which that clip was encoded was selected from a counter balanced list. Results indicated that desirability of the content played a significant role in a viewer’s subjective ratings of the sound and video quality for a particular clip. It was found that the sound and picture quality of highly desirable content (as determined by each viewer) was rated significantly higher than content that was deemed neutral or undesirable. The study has implications for selecting content for subjective video quality studies