Adaptation strategies for streaming SVC video

Abstract

This paper aims to determine the best rate adaptation strategy to maximize the received video quality when streaming SVC video over the Internet. Different bandwidth estimation techniques are implemented for different transport protocols, such as using the TFRC rate when available or calculating the packet transmission rate otherwise. It is observed that controlling the rate of packets dispatched to the transport queue to match the video extraction rate resulted in oscillatory behavior in DCCP CCID3, decreasing the received video quality. Experimental results show that video should be sent at the maximum available network rate rather than at the extraction rate, provided that receiver buffer does not overflow. When the network is over-provisioned, the packet dispatch rate may also be limited with the maximum extractable video rate, to decrease the retransmission traffic without affecting the received video quality.