Impact of Video Streaming Delay on User Experience with Head-Mounted Displays

Abstract

Delays in the delivery of immersive video to Head Mounted Devices (HMDs) are considered in the paper. The goal of this paper is to analyze the impact of video streaming latency on user experience with HMDs. The paper reports the results of the subjective quality assessment as a function of delay. The possible practical solutions are identified and, on this base, an experimental model of the considered systems is proposed. In order to properly test the influence of the streaming delay on the quality, the extensive subjective tests have been performed. Interesting conclusions have been drawn, showing that human acceptance of delay of translation of virtual point of viewing is much stronger than for delay of rotation of virtual viewing direction in immersive video. Finally, the influence of such observations on the system architectures is concluded.