EXFO EXpert IPTV Test Tools (FTB-1 / 2 Pro) - Manual (Page 28)

28
8.3 Advanced IPTV Metrics Test
8.3.1 Video Perceptual Quality Metrics
As described in the technical reference section Chapter 6.1, the Perceptual Quality Metrics are
calculated on the selected video stream to provide Mean Opinion Score (MOS) and related
parameters.
Definitions:
Video Perceptual
Quality provides the
most essential QoE
scoring metrics such a
Video MOS scores that
results from
computation of a
complex formula (see
Technical Overview for
details).
Degradation Factors
provide insight into the
nature of MOS score
degradation by listing
10 contributing factors
with their weight
score.
Video Jitter
Metrics provide
amount of
Average Frame
and I-frame Inter
Arrival Jitter
Average and Peak
Frame Arrival
Delay in
milliseconds
Video Scene
Analysis Metrics
provide
proportions of
the stream with
Detail, Panning,
Motion and Static
Image.
These factors
weight on the
overall Video
MOS score.