Subjective comparison of temporal and quality scalability

Jari Korhonen, Ulrich Reiter, Junyong You

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


In video streaming applications, it is necessary to choose the rate of the encoded stream to match the available transmission channel capacity. To provide flexible means for rate adaptation, different scalable video coding schemes have been proposed. For example, if necessary the bitrate can be reduced either by downscaling the frame rate (temporal scalability) or the image quality (quality scalability). However, the user preferences between different scalability types are not well known in different scenarios. In this paper, we present a methodology for subjective comparison between temporal and quality scalability. The practical experiments with low resolution video sequences show that in general, distortion is a more crucial factor for the perceived subjective quality than frame rate. However, the results also depend on the content. Moreover,, we discuss the role of other different influence factors on perception.
Original languageEnglish
Title of host publication2011 Third International Workshop on Quality of Multimedia Experience (QoMEX)
Publication date2011
ISBN (Print)978-1-4577-1333-0
ISBN (Electronic)978-1-4577-1334-7
Publication statusPublished - 2011
EventInternational Workshop on Quality of Multimedia Experience - Mechelen, Belgium
Duration: 1 Jan 2011 → …
Conference number: 3


ConferenceInternational Workshop on Quality of Multimedia Experience
CityMechelen, Belgium
Period01/01/2011 → …


  • Video scalability
  • Video quality
  • Subjective quality assessment

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