Pozueco L.,Campus de Viesques SN |
Paneda X.G.,Campus de Viesques SN |
Garcia R.,Campus de Viesques SN |
Melendi D.,Campus de Viesques SN |
Cabrero S.,Campus de Viesques SN
Computers and Electrical Engineering | Year: 2013
Content adaptation to a heterogeneous environment like the Internet is a key process for improving the perceived quality of the user. This paper presents an adaptive streaming system using Scalable Video Coding (SVC) technology. Using feedback information from clients about the transmission status, the server is able to select the most suitable combination of SVC layers for the available bandwidth. The estimation of the available bandwidth is carried out with non-intrusive methods, based on classic metrics such as packet loss, jitter and novel metrics like the linearity of reception times of RTP packets. The system is implemented in real equipment and the results show the correct operation and the accuracy of the system when adapting to different variations of the available bandwidth. We also study the scalability of the system when several clients access the service simultaneously, demonstrating that our system is as scalable as a non-adaptive system with SVC. © 2012 Elsevier Ltd. All rights reserved.