Exfo EXpert IPTV Test Tools (FTB-1 / 2 Pro) Uživatelský manuál stáhnout pdf (Strana 61)

Table below lists some of the perceptual quality metrics reported by VQmon/HD,

including acceptable ranges for each. (A complete list and description of the TVQM

Video Quality Metrics reported by VQmon/HD is provided in Appendix C.)

A.2.3.1 Mean Opinion Scores (MOS)

VQmon/HD reports estimated Mean Opinion Scores (MOS) for picture quality (MOS-V), audio

quality (MOS-A), and multimedia quality (MOS-AV) for each monitored video stream. MOS

scores range from 1 to 5, with 1 considered “Unacceptable” and 5 “Excellent.” MOS scores are

reported as instantaneous (per-frame), minimum, maximum, and average values. Interval

MOS scores are also reported as instantaneous and average values.

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Exfo EXpert IPTV Test Tools (FTB-1 / 2 Pro) Uživatelský manuál Strana 61