Abstract
This paper studies QoE (Quality of Experience) in Multi-View Video and Audio (MVV-A) transmission over IP networks where the users change the viewpoint by request. It jointly analyzes the effects of user interfaces for viewpoint change and contents in conjunction with network performance in a multidimensional way. In order to assess the QoE, we perform a subjective experiment which employs two user interfaces and two contents (a dog doll and a toy train). The assessors are instructed to follow the movement of the object in the content and evaluate the MVV-A system. As a result, we have found that even if the user feels comfortable with the user interface, QoE deteriorates when the load traffic is very high and the play out buffering time cannot absorb the delay jitter properly. The speed of the movement of the object in the content, and the similarity of the views of the cameras can affect users' perception of the viewpoint change response. We realized that in order to achieve high QoE, we need to employ a user interface that enables the users to change the viewpoint easily according to the object's movement.
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