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Configure stream mapping

LTN Global
Updated

About: Stream mapping allows removing or reassigning packetized elementary streams of a routed MUX to specific PIDs.

Not sure how to start?

→ Learn about stream mapping.

→ Learn how to create outputs.

→ Learn about MPEG transport streams.

Configure stream mapping

Mappings that are configured in the stream mapping tab of the output dialog affect all destinations and resource locations of the respective output. Destinations and resource locations with overrides enabled ignore this configuration.

To configure stream mappings, edit an output:

output-streammapping.png

  1. Go to "Stream Mapping".
  2. Enable stream mapping.
  3. Add a new mapping entry by pressing “Add Mapping”.
  4. Incoming: Specify an incoming stream packet which can be:
    • PID-based (The identification number of the packetized elementary stream.)
    • Enumeration-based (first video, second video, etc.)
  5. Outgoing: Specify an action or target PID for the outgoing stream packet:
    • Target PID: assign a new identifier for an incoming stream as it leaves Live Video Cloud
    • Preserve: keep the incoming stream
    • Drop: remove the incoming stream
  6. (Optional) Press to remove an existing mapping.
  7. Specify what happens with all the unmapped streams. Choose between drop or preserve.
Hint: Target PIDs must be at least 48 and maximum 8191. When using "Preserve" incoming PIDs below 48 or above 8191 will not be preserved on MPEG-TS based outputs (SRT, MPEG-TS via TCP).

Configure overrides

The above-configured stream mapping can be overwritten per resource location and destination. Overrides can be used without setting up an initial stream mapping configuration.

Hint: Whether or not destinations and resource locations allow for handling multiple video and audio streams depend on its protocol limitations.
→ Learn more about stream mapping and protocol limitations.

RTMP, HLS, social platforms using RTMP

To configure stream mapping overrides for RTMP, HLS, and social platforms using RTMP:

stream-mappings-override-1.png

  1. Enable stream mapping override
  2. Specify an incoming video stream to be preserved
  3. Specify an incoming audio stream to be preserved

MPEG-TS via TCP, SRT

To configure stream mapping overrides for MPEG-TS via TCP and SRT:

stream-mappings-override-2.png

  1. Enable stream mapping
  2. Add a new mapping entry by pressing “Add Mapping”.
  3. Incoming – Specify an incoming stream packet which can be:
    • PID-based
    • Enumeration-based (first video, second video, etc.)
  4. Outgoing – Specify an action or target PID for the outgoing stream packet:
    • Target PID: assign a new identifier for an incoming PES as it leaves Live Video Cloud
    • Preserve: keep the incoming stream
    • Drop: remove the incoming stream
  5. (Optional) Press to remove an existing mapping.
  6. Specify what happens with all the unmapped streams. Choose between drop or preserve.
Hint: Target PIDs must be at least 48 and maximum 8191. When using "Preserve" incoming PIDs below 48 or above 8191 will not be preserved on MPEG-TS based outputs (SRT, MPEG-TS via TCP).

 

How to continue?

→ Learn about monitoring outputs.

→ Learn about monitoring stream mapping.

→ Learn about stream mapping and protocol limitations.

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