PID mappings allows you to configure ancillary PIDs to be carried within an MPTS. Typically PID mappings are used to set up the data with additional PID streams for broadcast channels such as in-band. For example, setting Digital Transport Adapter (DTA) PID mappings streams and the in-band EAS PID stream. To configure in-band DTA PIDs for each broadcast output transport stream, you need to create a PID mapping for the Condition access table (CAT), Entitlement Management Message (EMM), and NET PID streams, and the Emergency Alert System (EAS) PID stream on every MPTS having DTA video services.
Note that only multicast input streams can be multiplexed to multiple output streams. Unicast input ancillary PID streams including DTA/EMM PID streams cannot be mapped to multiple MPTS. To map the same ancillary (for example, DTA/EMM) input PID stream to multiple MPTS outputs, the input stream must be received as multicast.
PID mappings can be configured on all MPTS video types, including VOD, RTSP, RPC, and Manual MPTS . If you are configuring for Linear Source Management, each MPTS within a narrowcast service group must be configured to receive the modified NET PID generated by the LSM transport stream.
You can configure mappings by importing saved configuration data using a JSON file, or by manually entering data.