Jeongho Kang  Minsu Kim  Kwangsue Chung

10.5626/JOK.2020.47.6.612

HTTP Adaptive Streaming Bandwidth Utilization variable bit rate Quality of Experience

In recent years, as the demand for video streaming has increased due to the development of the network, HTTP adaptive streaming has attracted increased attention. HTTP adaptive streaming can guarantee QoE (Quality of Experience) because it adaptively determines the quality to provide based on network conditions. However, existing quality adaptation techniques do not consider VBR (Variable Bit Rate) characteristics when streaming video, which causes problems such as interruption of playback and degradation of average quality. In this paper, we propose a QoE-aware quality adaptation method based on bandwidth utilization for VBR video streaming. The proposed scheme determines the quality to provide using the actual size of the video segment, the quality of information requested in the past, and the buffer occupancy. As a result of the experiment, we confirmed that the proposed scheme improves QoE thanks to fewer quality changes, higher average quality and without generating playback interruptions when compared with existing schemes.