EXFO EXpert IPTV Test Tools (FTB-1 / 2 Pro) - Manual (Page 56)

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Figure 2-7.
VQmon/H
D video
stream
quality
analysis
algorithm
A.2.1.1 TR 101 290 Metrics Collection
VQmon/HD collects and reports the full set of Priority 1 and 2 metrics described in TR 101 290
for the measurement and analysis of MPEG-2 Transport streams.
A.2.1.2 Playout Buffer Emulator
VQmon/HD’s playout buffer emulator component detects lost, duplicate, and out-of-sequence
packets and measures packet-to-packet delay (jitter) levels, reporting PPDV (RFC3550) and
MAPDV (ITU-T G.1020). Detailed IPTV packet loss/discard statistics are provided, along with
metrics evaluating the effectiveness of Forward Error Correction (FEC), if used. If Reliable UDP
is in use, VQmon/HD reports the proportion of retransmitted packets and the impact on
bandwidth due to retransmission.
A.2.1.3 Content Analysis
VQmon/HD performs high-level content analysis to detect levels of detail, motion, and
panning, and can also detect some scene changes. VQmon/HD also recognizes abnormal
content conditions (including no content, noise/snow, and frozen image) and can generate
alerts if they are detected.