Joined multicasts
i
: Click the information icon to access the Detailed Monitoring pop-up view.
Thumb:
A thumbnail is displayed for each stream. Click the small thumbnail to view a larger
image that is updated more frequently.
Name: The stream name specified by the user in the Edit Multicast view
Signal: Time since last signal loss
Page: The page associated with the multicast
Mapping:
For MPEG-2 Transport streams, the number of MPEG-2 packets mapped into each
RTP or UDP packet is displayed here. For SMPTE 2022-6 SDI over IP streams,
“SDI/RTP” is displayed, and for other unsupported RTP streams, “RTP data” is
displayed.
Net bitrate:
Instantaneous MPEG-2 Transport Stream bitrate excluding null packets (PID 8191).
The instantaneous bitrate is measured over a time period of 1000 ms.
CC errs:
The number of times a discontinuity has been detected for all the MPEG-2 Transport
Stream continuity counters. This value is the total number of discontinuities detected
for all PIDs present. Note that this value does NOT represent the number of MPEG-2
TS packets lost because any continuity counter mismatch detected for an IP-frame
will increase CC errs by one. CC errors are serious as they will in practice usually
result in visual video artifacts (‘blocking’) if occurring on the video PIDs. CC errors
can be due to an erroneous input signal to the streaming head-end (e.g. from
satellite rain fading or changes in the uplink). Alternatively, CC errors can arise from
IP packets being dropped in the network.
PIDs: Number of PIDs in the MPEG2-TS
Syncb errs: Number of transport stream packets with wrong syncbyte (0x47)
Curr bitrate:
Instantaneous MPEG-2 Transport Stream bitrate including null packets (PID 8191).
The instantaneous bitrate is measured over a time period of 1000 ms. For non-TS
traffic the bitrate is calculated from the size of the UDP payloads.
Min bitrate: The minimum current bitrate measurement
VB2xx GigE User’s Manual version 5.4 81
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