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

Stephen Wolf

Abstract: Provides an in-depth analysis of the behavior of the P6 video performance parameter, a parameter the measures the motion energy that is lost when a video scene is transmitted through a digital video compression system. Objective to subjective correlation results are given for the T1A1 subjective video experiment that contained 625 mean opinion scores (25 test scenes passed through 25 different video transmission systems that ranged in bit rate from 64 kb/sec to 45 Mb/sec). This contribution provides experimental evidence that video teleconferencing users do not significantly downgrade quality ratings for frame rates of at least 10 to 15 frames per second.

Keywords: performance; models; noise; Video; quality; objective; subjective; correlation; impairments; dropped frames; temporal; compression; scene; teleconferencing; codecs; frame rate; motion


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Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572
LSegre@ntia.gov

For technical information concerning this report, contact:

Margaret H. Pinson
Institute for Telecommunication Sciences
(303) 497-3579
mpinson@ntia.doc.gov


Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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