QoE assessment of Multi-View Video and audio simultaneous IP transmission: The effect of user interfaces

This paper considers the joint effect of simultaneous transmission methods and user interfaces on QoE of Multi-View Video and audio (MVV-A) over IP networks. When the user wants to change his/her viewpoint, if the user´s terminal already receives the video stream requested, the viewpoint change can be done quickly. Otherwise, it needs to request the video to the server. As the MVV transmission schemes which exploit a tradeoff between the viewpoint change response and image quality determined by video encoding bitrate of each viewpoint, we consider three simultaneous transmission methods of video streams: three streams, five streams and eight streams methods. We then compare three user interfaces for viewpoint change. A subjective experiment is performed to assess the QoE. We employ a content which consists of a moving toy train, audience and a score display. As a result, we have found that the user interfaces have impacts on QoE of the MVV-A system; they play important roles when the network delay increases. In this experiment, the three streams method, which prefers image quality, is the best among the transmission methods.