Source Settings

HMP assigns a unique identifier (ID) to each source when it is defined.

Note

If you are using the HMP Command Line API, you need to copy this ID to add this source to a session.

Select the protocol type:

• UDP
• SRT (see the SRT Settings section of this table)

• RTMP (see the RTMP Settings section of this table)

• RTSP (see the RTSP Settings section of this table)

  

  Note

  RTMP and RTSP are available only in multi-site live configurations when Media Gateway is selected in the Receiver dropdown.

(Available with Live Review license only) Enable the low latency player for the source.

Note

• Low latency distribution of a unicast stream from HMP uses additional system resources. Only enable this feature for streams with very limited viewership or streams that are always distributed to clients via multicast.
• Low latency multicast delivery is incompatible with encrypted streams.
• Closed captions are not supported by the low latency player.

Specifies the SRT Connection Mode:

• Caller: HMP acts like a client and connects to a server listening and waiting for an incoming call.
• Listener: HMP acts like a server and listens/waits for clients to connect to it.
• Rendezvous: Allows calling and listening at the same time.

Tip

To simplify firewall traversal, Rendezvous Mode allows HMP and the encoder to traverse a firewall without the need to open a network port

Note

See Configuring Secure Reliable Transport (SRT) Sources.

Specifies how long HMP buffers received packets. The size of this buffer adds up to the total latency. A minimum value must be 3 times the round-trip-time (RTT).

Range = 20–8000 ms

Note

Latency is for the SRT protocol only and does not include the capture, encoding, decoding and display processes of the endpoint devices.

(Optional) To assign metadata to the source, select a key and select one or more values or (where allowed) type in custom values

Note

Metadata keys and values must be pre-defined on your system. See Defining Metadata.

If you notice that the latency on non-HLS streams sent to Haivision Play 2000/4000 STBs increases over time, you may enable PCR (Program Clock Reference) lock. This feature enhances synchronization for smoother playback, by optimizing timing accuracy in your video streams.

Note

• This feature may not work universally for all streams, so it's essential to test it before deploying to your production environment.
• This feature does not apply to HLS streams.

(For advanced users only) To change the STB player tuning profile used by the View Direct UDP source, select the desired profile from the drop-down list. See Adjusting STB Player Tuning for defining the available tuning profiles.

Note

Only applies to View Direct UDP sources.