EXFO EXpert IPTV Test Tools (FTB-200v2) - Manual (Page 79)

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Video Stream Metrics
The Video Stream Description provides information on the type of codec being used, Group of
Pictures structure and length, image size and other key factors.
Video Stream Description
Metric Description
Codec type Type of codec (e.g. MPEG4)
GoP type Group of Pictures type (e.g. IBBP…)
GoP length Number of frames in Group of Pictures
Image size Image size in pixels (X x Y) (autodetected *) and number of frames per
second
Video Stream Metrics provide insight into the proportion of different type of video frame that
are impacted by packet loss and discard, and to the overall video bandwidth.
V ideo Stream Metrics
Metric Description
I, P, B frame packets received Counts of the numbers of I, P and B frame packets received
I, P, B frame packets lost Counts of the numbers of I, P and B frame packets
I, P, B frame packets discarded Counts of the numbers of I, P and B frame packets