EXFO EXpert IPTV Test Tools (FTB-200v2) - Manual (Page 30)

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Definitions:
Video Video
Perceptual
Quality
Metrics
Instantaneous Absolute MOS 1.0-5.0 The instantaneous absolute Video Mean Opinion Score, a 1-5 score that
measures the impact of the video codec, image size, frame rate, packet loss
distribution, GoP structure, content, and frame loss concealment on viewing
quality
Minimal Absolute MOS 1.0-5.0 The minimum absolute Video Mean Opinion Score, a 1-5 score that
measures the impact of the video codec, image size, frame rate, packet loss
distribution, GoP structure, content, and frame loss concealment on viewing
quality
Average Absolute MOS 1.0-5.0 The average absolute Video Mean Opinion Score, a 1-5 score that
measures the impact of the video codec, image size, frame rate, packet loss
distribution, GoP structure, content, and frame loss concealment on viewing
quality
Maximum Absolute MOS 1.0-5.0 The maximum absolute Video Mean Opinion Score, a 1-5 score that
measures the impact of the video codec, image size, frame rate, packet loss
distribution, GoP structure, content, and frame loss concealment on viewing
quality
MOS Below Threshold 0-100% The proportion of the stream duration where the Absolute MOS-V fell below
the configured analysis threshold.
Transmission Quality 0-50.0 The codec-independent video service transmission quality rating
EPSNR dB Estimated Peak Signal to Noise Ratio (PSNR) expressed in dB. This is an
estimate of the distortion that has occurred between the source video stream
and the output video stream.
Degradation Factors :
0-10 Severity of perceptual quality degradation caused by (each of) the following
factors: Loss, Discard, Codec Quantization Level, Frame Resolution, Frame
Resolution, Frame Rate, GOP Length, Available Network Bandwidth,
Audio/Video Synchronization, Recency
Video
Scene
Analysis
Metrics Instantaneous detail level 0-100 Instantaneous detail level
Instantaneous motion level 0-100 Instantaneous motion level
Instantaneous panning level 0-100 Instantaneous panning level
Static Image Proportions % The proportion of the video stream that contains static image[s]
High Detail Proportions % The proportion of the video stream that contains high detail
Low Detail Proportions % The proportion of the video stream that contains low detail
High Panning Proportions % The proportion of the video stream that contains a high degree of panning
Low Panning Proportions % The proportion of the video stream that contains a low degree of panning
High Motion Proportions % The proportion of the video stream that contains high motion
Low Motion Proportions % The proportion of the video stream that contains low motion
Video Jitter
Metrics Frame Inter-arrival Jitter ms Average frame inter-arrival jitter in milliseconds. The inter-arrival jitter is
computed relative to the expected arrival time based on the frame rate.
I Frame Inter-arrival Jitter ms Average I frame inter-arrival jitter in milliseconds. The inter-arrival jitter is
computed relative to the expected arrival time based on the frame rate.
Average Frame Arrival Delay ms Average frame arrival delay, in milliseconds.
Peak Frame Arrival Delay ms Peak frame arrival delay, in milliseconds. The peak maintains a hold time of
approx. 10 seconds
Tab Category Metric Name Range Description