EXFO EXpert IPTV Test Tools (FTB-1 / 2 Pro) - Manual (Page 30)

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8.3.2 Transport Packet Metrics
Transport Packets are
MPEG-TS packets that
carry Packet
Elementary Stream
(PES).
Statistics of these
MPEG-TS Packets such
as lost, discarded,
corrected, out-of-
sequence and
duplicated packets
allow detection of this
major source of video
picture degradation.
Jitter Metrics
focus on the PCR
Jitter which is
defined as Time
Stamp arrival
time jitter.
PCR Jitter is a
major contributor
to loss of frames
due to router or
STB buffer
overflow.
RTP Packet Metrics (if available) are statistics of RTP protocol
encapsulation. RTP encapsulation is optional and is used to provide
independent time stamping to video and audio. But it also adds overhead
to the transmission.
Tracking RTP statistics allows problem isolation to the RTP encapsulating
device.