SDN Assisted Codec, Path and Quality Selection for HTTP Adaptive Streaming

Adaptive streaming over HTTP is the dominant video technology for more than a decade. Streaming (HAS) systems provide framework which enables clients to adapt quality with respect network fluctuations during streaming, hence optimize perceived on client side. Recently, assistance integrated HAS in order improve underlying conditions and network-related information clients. The performance of can be further enhanced if characteristics streamed are considered. In this paper, we propose system architecture where Software Defined Networking (SDN) utilized assisting select most appropriate codec bitrate under constraint current as well routing packet paths. proposed architecture, layered used, each additional layer improves quality. controller estimates loss probability by taking characteristics, bitrates layers capacity into account. Based these estimations, selects type manage network. Simulation results show that improved significantly when codec, path selection jointly considered, combined SDN flexibility advantageous.