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Institute for Telecommunication Sciences
the research laboratory of the National Telecommunications and Information Administration

Institute for Telecommunication Sciences / Resources / Video Quality Research / Standards / Subjective Tests

Subjective Video Quality Test Standards

The International Telecommunications Union (ITU) creates Recommendations (standards) that describe how subjective video quality experiments should be performed. Key Recommendations are:

  • ITU-R Rec. BT.500 - a highly controlled environment for rating the video quality of broadcast television signals. The intention is that environmental variables cannot influence people's opinion (e.g., lighting, background noise, wall decorations, wall color, distance to screen).
  • ITU-T Rec. P.910 - a controlled environment for rating the video quality of multimedia services such as videotelephony, videoconferencing and video-on-demand.
  • ITU-T Rec. P.911 - combines P.910 and P.800, to provide audiovisual quality ratings.
  • ITU-T Rec. P.912 - analyzes whether or not a video link can be used for a specific task, such as reading license plates.
  • ITU-T Rec. P.913This Recommendation focuses on the evaluation of flat screens, laptops, and mobile devices. P.913 emphasizes flexibility of environment, rating scale, display technology, and stimulus modality (video, audio, or audiovisual). To balance this flexibility, P.913 includes mandatory reporting requirements. Click here for a summary.