Emulation of HTTP Adaptive Video Streaming over SDN

Video streaming is growing into a well-known technology for media transmission over the Internet. Dynamic Adaptive Streaming over HTTP (DASH) permits transmitting data streams to a user with the largest feasible bit rate in different bandwidth situations which is especially important for wireless networks. The purpose of this paper is to emulate and analyze DASH technology as far as live video streaming is concerned in an SDN environment, as well as to examine the Quality of Experience (QoE) on SDN networks, namely to understand the user's perspective. Thus, a virtual SDN network is developed in the Mininet environment to simulate DASH technology. In each experiment, one server transmits a video live to a client while the throughput is changing by adding extra traffic to the network. As a result, the impact of the added traffic on the quality of the broadcast video is examined, and the impact in terms of QoE is measured.