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

Margaret H. Pinson


This report describes the video quality subjective test its4s, including the experiment design and footage attribution. Subjective experiment its4s includes 813 unique video sequences, each four seconds in duration. No video sequences are repeated. The goals are (1) to provide insights into the optimal experiment designs for training no-reference (NR) metrics, and (2) to understand the impact of original video quality on mean opinion scores (MOS). Together these goals support the larger goal of progressing research on effective NR metrics. The dataset is freely available for research and development purposes.

Videos and ratings can be found on CDVL ( by doing a keyword search for "its4s".

Keywords: video quality; image quality; subjective testing

To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572

For technical information concerning this report, contact:

Margaret H. Pinson
Institute for Telecommunication Sciences
(303) 497-3579

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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