Representation Switch Smoothing for Adaptive HTTP Streaming

Michael Grafl, Christian Timmerer


When an adaptive media streaming system has to switch from one representation of the content to another, the switch causes viewer distraction. We introduce the concept of representation switch smoothing for alleviating the distraction and improving the overall quality of experience. As adaptive HTTP streaming systems typically deploy video buffers on the client side, the adaptation decision is known far enough ahead of playout time to perform a seamless transition between quality representations. We discuss implementation considerations for an adaptive HTTP streaming system with scalable video coding, present a subjective evaluation of the proposed approach, and identify factors that influence how smooth transitions are perceived.


 DOI: 10.21437/PQS.2013-32

Cite as: Grafl, M., Timmerer, C. (2013) Representation Switch Smoothing for Adaptive HTTP Streaming. Proc. 4th International Workshop on Perceptual Quality of Systems (PQS 2013), 168-173, DOI: 10.21437/PQS.2013-32.


@inproceedings{Grafl2013,
  author={Michael Grafl and Christian Timmerer},
  title={Representation Switch Smoothing for Adaptive HTTP Streaming},
  year=2013,
  booktitle={Proc. 4th International Workshop on Perceptual Quality of Systems (PQS 2013)},
  pages={168--173},
  doi={10.21437/PQS.2013-32},
  url={http://dx.doi.org/10.21437/PQS.2013-32}
}