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CHAPTER 10: DEMOD & MUX SETTINGS TAB
10-8
DigiVu
®
Series Multichannel MPEG-2/H.264 Encoder/Multiplexer with QAM &/or IP Output - Installation & Operation Manual
10.8.4 Bit Rate Margin
This is the margin or headroom detected in the incoming stream. This allows some small change in the aggregate bit rate of
all of the TS programs without exceeding the QAM channel maximum bit rate.
10.8.5 Null Packets Bit Rate
The transport stream may not contain all MPEG stream data. If the analyzer detects null stuffing, it displays the data rate of
the nulls here.
10.8.6 Transport Stream Total Bitrate
This is the bit rate of the QAM channel. In the case illustrated above, a QAM-B 256 QAM channel with a data rate of 38811
kbps.
10.8.7 Program Components
Each program listed in the stream PAT and PMT
tables will be displayed along with their assigned
MPEG program number. Each program is further
broken down into it’s components:
10.8.8 PMT Table
The table that announces the PID assigned to
each individual elementary stream; the Audio and
Video streams. The PMT table is contained within
it’s own data stream with a PID assigned
•
PMT PID
The PID assigned to the PMT table.
This cannot be changed.
•
PMT Bit rate
The bit rate of the PMT table. Information
only.
10.8.9 ES Type=13818-2 Video
The stream analyzer will determine the video
stream type and display it here. In this example
the stream is detected as 13818-2 Video. The
number 13818-2 is the standard that defines MPEG-2 video. If your system carries different video, this will reflect the video
detected. ES means Elementary Stream. Each program stream is comprised of one or more elementary streams.
•
ES PID
The PID assigned to the Video Elementary Stream.
•
ES Bit Rate
The bit rate of the Video Elementary Stream in kbps. In the illustrations, the actual bit rate displayed is the total of the
payload data rate specified by the standard plus header packets
10.8.10 ES Type=ATSC_AC_3 Audio
The stream analyzer will determine the audio stream type and display it here. In the example illustrated the stream is detected
as AC-3 Audio. If your system carries different audio, such as MPEG-1, the analyzer will reflect the audio stream type detected.
ES means Elementary Stream. Each program is comprised of one or more elementary streams.
•
ES PID
The PID assigned to the Audio Elementary Stream.
•
ES Bit Rate
The bit rate of the Audio Elementary Stream in kbps. In the illustrations, the actual bit rate displayed is the total of the
payload data rate specified by the standard plus header packets.
Figure 10-15:
Showing Program Components in PID Display Tree