Effects of an encoding scheme on perceived video quality transmitted over lossy internet protocol networks

Ron Shmueli, Ofer Hadar, Revital Huber, Masha Maltz, Merav Huber

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We analyze viewer-perceived quality of a compressed video stream, transmitted over a lossy IP network with a quality of service mechanism. The parameters of the encoding schemes include the transmission bit rate, the compression depth, the frame size and the frame rate. We demonstrate that when jointly considering the impact of the coding bit rate, the packet loss ratio and the video characteristics, we can identify an optimal encoding scheme that maximizes viewer-perceived quality. The video content, the compression and the transmission are represented by a vector X which contains d parameters. Based on subjective tests, we obtain a set of observation pairs of labeled samples Pi = {Xi, Qi}, where Qi is the quality class related to the vector of input parameters Xi. To determine the significance of these results, we use the analysis of variance (ANOVA) statistical method, which identifies those factors that cause differences in the averages in the subjective tests results, and determines the significance of the results. Finally, we introduce a novel method to predict an optimal encoding scheme based on canonical discriminant analysis (CDA) for feature classification.

Original languageEnglish
Article number4599252
Pages (from-to)628-640
Number of pages13
JournalIEEE Transactions on Broadcasting
Issue number3
StatePublished - 1 Sep 2008


  • Encoding scheme
  • MPEG
  • Perceived quality
  • QoE
  • Subjective tests
  • Video QoS
  • Video quality

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Effects of an encoding scheme on perceived video quality transmitted over lossy internet protocol networks'. Together they form a unique fingerprint.

Cite this