SRT | Ferncast Knowledge Base

Option	Description
Number of channels	Information field: Shows the number of currently used channels.
Sampling rate	Information field: Shows the current sample rate of the input.
Data vailable	Information field: Shows whether the audio source currently receives data.
Reset Pipe to waiting	Toggles behavior in case of no incoming audio data. ON: The PIPE is set into waiting state until incoming data is detected at which point the PIPE becomes active. OFF: The PIPE is stopped (turned off) if there is no incoming data after a short grace period.
Override display name	Changes the name by which this audio source element is displayed in the PIPEs list (instead of “Audio over IP”). Note that this is separate and distinct to the PIPE's name. This is useful to identify specific inputs at a glance when a large number of PIPEs is configured. Example: Naming it “Studio Cologne” to display where the incoming stream is coming from.
Passthrough	Toggles whether incoming audio is decoded upon entering the system. ON: Incoming audio is not decoded. On the output side, untouched audio is delivered. OFF: Incoming audio is decoded (and transcoded before leaving the system). Note: This option requires a license. See here for details.
Timestamp smoothing	Toggles whether timestamps should be restamped if they do not match system time. On: Turns timestamp smoothing on. Off: Turns timestamp smoothing off.
Port	Sets the network port for communication. This must match the port that the sending side is streaming to.
Host	Determines whether caller or listener mode is used. Caller mode: Enter the IP or hostname of the system you wish to call. Listener mode: Leave empty.
Network interface	Dropdown: Selects the network interface to use for the communication.
Local Port	Sets the local network port to bind communication to.
Passphrase	Enables encryption. Set a passphrase to enable encryption. The communication partner must have the same passphrase set.
Latency	Sets target latency in miliseconds.
Statistics Interval	Sets the time period after which the system is polled for new SRT statistics. Setting “0” disables stat polling.
Payload	Dropdown: Sets either the Default muxer or RTP payloading. If RTP is chosen, the following two options become available.
Call profile	Dropdown: Sets the Call profile to use for the payload.
Playout sync buffer	Enables distributed, synchronized playout. Buffer is set in miliseconds.
Raw data input	Toggles whether non-media data input is accepted ("On") or not ("Off"). Note: Raw data will not be decoded.