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Coefficient of Throughput Variation as Indication of Playback Freezes in Streamed Omnidirectional Videos
Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, Institutionen för teknik och estetik.
Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, Institutionen för teknik och estetik.
2018 (Engelska)Ingår i: 2018 28TH INTERNATIONAL TELECOMMUNICATION NETWORKS AND APPLICATIONS CONFERENCE (ITNAC), IEEE , 2018, s. 392-397Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
IEEE , 2018. s. 392-397
Nyckelord [en]
Virtual Reality, 360-videos, video streaming, Quality of Experience, video freezes, throughput statistics
Nationell ämneskategori
Kommunikationssystem Telekommunikation
Identifikatorer
URN: urn:nbn:se:bth-17728ISI: 000459862300072ISBN: 978-1-5386-7177-1 (tryckt)OAI: oai:DiVA.org:bth-17728DiVA, id: diva2:1297771
Konferens
28th International Telecommunication Networks and Applications Conference (ITNAC), Sydney, NOV 21-23
Tillgänglig från: 2019-03-21 Skapad: 2019-03-21 Senast uppdaterad: 2019-03-25Bibliografiskt granskad

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Kelkkanen, ViktorFiedler, Markus

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