Including passthrough
streams in an MPTS
Read this section if you want to include passthrough streams in the MPTS. For guidelines and rules about the streams that you can pass through, see Passing through custom streams and Passing through SI/PSI tables
To pass through a stream, you instruct Elemental Statmux to extract a specific PID from a source MPTS that is provided by the upstream system. Elemental Statmux. The PID must identify a single stream, not a program.
Get ready
To pass through one or more streams, you need the following information:
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The source MPTS locations: The location where each upstream system source will push each source MPTS. The upstream system can decide on each location and provide it to you. Or you can let Elemental Statmux create a multicast address and then you can provide the upstream system with that location.
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The PID of each stream that you want to extract from each source MPTS.
The procedure
You can add passthrough streams while you are creating the MPTS or after you have created it.
Follow this procedure to extract one or more streams from the same source MPTS:
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On the MPTS Details page where you want to add the streams, display the Passthrough Streams tab.
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Select the Add Passthrough Stream button. The Add Passthrough Stream dialog appears. Complete the fields:
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Name: Give the program a nickname for your internal use. This name doesn't appear in the outputs MPTS.
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PID Controls – Incoming: Identify the PID that you want to extract from the program. This PID must be discoverable — it must be included in a PMT that is included in the PAT for the source MPTS.
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PID Controls – Outgoing: The PID to assign to the stream in the output MPTS.
You must specify this PID, which means it must be unique among all the PIDs that you are manually specifying in the entire MPTS. You don't need to worry about it being unique among the PIDs that Elemental Statmux will assign because Elemental Statmux will always work around the PIDs you've assigned manually.
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Select the Add PID Mapping button if you want to extract another stream from the same source MPTS.
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Select the Stream Endpoints tab: Complete these fields if the upstream system has provided you with the location of the source MPTS.
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Choose Done. One new entry appears in the list of passthrough streams in the MPTS.
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Choose Save.
Review the information:
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Select the Stream Endpoints tab. This tab shows the location of the source MPTS:
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If you completed the location fields the dialog, this tab shows the information you entered.
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If you left the location fields empty on the dialog, Elemental Statmux has automatically generated a primary and backup multicast address. Give this information to your contact at the upstream system so that they can push the source MPTS to that location.
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Select the PID Controls tab. All the PIDs that you entered on the dialog appear in the same entry.
