Ensuring video QoE using HTTP Adaptive Streaming: Issues and challenges

HTTP adaptive streaming is used by a numerous video streaming services in the internet. It facilitates video streaming through heterogeneous network, without the need of a dictated streaming infrastructure. The benefit of HTTP Adaptive Streaming, compared to classical HTTP, is the reduction of the interruption, i.e. stalling event, and the use of bandwidth. This technology tries to adapt the video to the variation of the network condition. It take into account different information such as end user device capacity, available bandwidth, video quality level, current network conditions, and current server load. It enable, also, the service provide to improve resource utilization and the perceived video quality, i.e. Quality of Experience. This paper introduces the reader this important concept. It presents also a newest classification of different HAS's influencing factors. The different issues and challenges related to HTTP Adaptive Streaming are also discussed in this paper.