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Coefficient of Throughput Variation as Indication of Playback Freezes in Streamed Omnidirectional Videos
Blekinge Institute of Technology, Faculty of Computing, Department of Technology and Aesthetics.
Blekinge Institute of Technology, Faculty of Computing, Department of Technology and Aesthetics.
2018 (English)In: 2018 28TH INTERNATIONAL TELECOMMUNICATION NETWORKS AND APPLICATIONS CONFERENCE (ITNAC), IEEE , 2018, p. 392-397Conference paper, Published paper (Refereed)
Abstract [en]

A large portion of today's network traffic consists of streamed video of large variety, such as films, television shows, live-streamed games and recently omnidirectional videos. A common way of delivering video is by using Dynamic Adaptive Streaming over HTTP (DASH), or recently with encrypted HTTPS. Encrypted video streams disable the use of Quality of Service (QoS) systems that rely on knowledge of application-dependent data, such as video resolution and bit-rate. This could make it difficult for a party providing bandwidth to efficiently allocate resources and estimate customer satisfaction. An application-independent way of measuring video stream quality could be of interest for such a party. In this paper, we investigate encrypted streaming of omni-directional video via YouTube to a smartphone in a Google Cardboard VR-headset. We monitored such sessions, delivered via both WiFi and mobile networks, at different times of day, implying different levels of congestion, and characterised the network traffic by using the Coefficient of Throughput Variation (CoTV) as statistic. We observe that this statistic shows to be able to indicate whether a stream is stable or unstable, in terms of potential video playback freezes, when the DASH delivery strategy is used.

Place, publisher, year, edition, pages
IEEE , 2018. p. 392-397
Keywords [en]
Virtual Reality, 360-videos, video streaming, Quality of Experience, video freezes, throughput statistics
National Category
Communication Systems Telecommunications
Identifiers
URN: urn:nbn:se:bth-17728ISI: 000459862300072ISBN: 978-1-5386-7177-1 (print)OAI: oai:DiVA.org:bth-17728DiVA, id: diva2:1297771
Conference
28th International Telecommunication Networks and Applications Conference (ITNAC), Sydney, NOV 21-23
Available from: 2019-03-21 Created: 2019-03-21 Last updated: 2019-03-25Bibliographically approved

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Kelkkanen, ViktorFiedler, Markus

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf