Effects of compression parameters on the perceived quality of video stream over a lossy internet protocol network

Ofer Hadar, Ron Shmueli, Revital Huber, Merav Huber

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We analyze the connection between viewer-perceived quality and encoding schemes. The encoding schemes depend on transmission bit-rate, MPEG compression depth, frame size and frame rate in a constant bit-rate (CBR) video transmission of a MPEG-2 video sequence. The compressed video sequence is transmitted over a lossy communication network with quality of service (QoS) and a certain Internet (IP) loss model. On the end-user side, viewer-perceived quality depends on changes in the network conditions, the video compression, and the video content complexity. We demonstrate that, when jointly considering the impact of coding bit rate, packet loss, and video complexity, there is an optimal encoding scheme, which also depends on the video content. We use a set of subjective tests to demonstrate that this optimal encoding scheme maximizes the vi(pwer-perceived quality.

Original languageEnglish
Article number087003
JournalOptical Engineering
Volume45
Issue number8
DOIs
StatePublished - 1 Aug 2006

Keywords

  • Compression
  • Encoding scheme
  • Internet protocol
  • Motion Picture Experts Group
  • Packet loss ratio
  • Perceived quality
  • Quality of service
  • Subjective tests

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (all)

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