QoE of YouTube Video Streaming for Current Internet Transport Protocols

  • Tobias Hoßfeld
  • Raimund Schatz
  • Udo R. Krieger
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8376)

Abstract

Video streaming currently dominates global Internet traffic and will be of even increasing importance in the future. In this paper we assess the impact of the underlying transport protocol on the user perceived quality for video streaming using YouTube as example. In particular, we investigate whether UDP or TCP fits better for Video-on-Demand delivery from the end user’s perspective, when the video is transmitted over a bottleneck link. For UDP based streaming, the bottleneck link results in spatial and temporal video artifacts, decreasing the video quality. In contrast, in the case of TCP based streaming, the displayed content itself is not disturbed but playback suffers from stalling due to rebuffering. The results of subjective user studies for both scenarios are analyzed in order to assess the transport protocol influences on Quality of Experience of YouTube. To this end, application-level measurements are conducted for YouTube streaming over a network bottleneck in order to develop models for realistic stalling patterns. Furthermore, mapping functions are derived that accurately describe the relationship between network-level impairments and QoE for both protocols.

Keywords

YouTube Quality of Experience Stalling TCP Loss UDP 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Tobias Hoßfeld
    • 1
  • Raimund Schatz
    • 2
  • Udo R. Krieger
    • 3
  1. 1.Institute of Computer ScienceUniversity of WürzburgWürzburgGermany
  2. 2.Telecommunications Research Center Vienna - FTWViennaAustria
  3. 3.Otto-Friedrich University BambergBambergGermany

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