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Video Quality Control Scheme Based on Segment Throughput and Buffer Occupancy for Improving QoE in HTTP Adaptive Streaming Service
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 Title & Authors
Video Quality Control Scheme Based on Segment Throughput and Buffer Occupancy for Improving QoE in HTTP Adaptive Streaming Service
Kim, Sangwook; Yun, Dooyeol; Chung, Kwangsue;
 
 Abstract
Recently HTTP (Hypertext Transfer Protocol) adaptive streaming services have been the subject of much attention. The video quality control scheme of conventional HTTP adaptive streaming services estimates bandwidth using segment throughput and smooths out the sample of segment throughput. However, the conventional scheme has the problem of QoE (Quality of experience) degradation occurring with buffer underflow and frequent quality change due to the fixed number of samples. In order to solve this problem, we propose a video quality control scheme based on segment throughput and buffer occupancy. The proposed scheme determines the number of samples according to the variation of segment throughput. The proposed scheme also controls video quality based on the threshold of bitrate to keep stable buffer occupancy. The simulation results show that proposed scheme improves QoE by preventing buffer underflow and decreasing quality change when compared with the conventional scheme.
 Keywords
HTTP adaptive video streaming service;QoE;video quality control;segment throughput;
 Language
Korean
 Cited by
 References
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