Adding SRT Outputs

The SRT output can be pulled to/from an SRT-enabled device and is configured via Zen Master or Zixi API only. SRT stands for ‘Secure Reliable Transport’ and is an open-source video transport protocol and technology stack. SRT uses secure streams and easy firewall traversal to optimize streaming performance and deliver high-quality video over even the most unreliable networks.

To Create an SRT Output:

In the Zixi Broadcaster Outputs page, click . The New Output window is displayed.
Type in the unique identifier for this output in the Output Name.
Select an Input Stream to be made available on this output from the adjacent drop-down list.
Select the Show in Matrix check box to display this stream in the Matrix (see Using the Matrix). Default: Selected.
Select SRT.
Enter the Output Parameters (see Output Stream Parameters Table).
Click OK.

The new Pull Output with its settings is created and now appears on the screen.

Output Stream Parameters Table

Parameter	Description
Output Parameters
Listening Port	Specify the port to listen on. This port must be open on all firewalls between the Zixi Broadcaster and other devices it is communicating with.
Password	If the stream is password protected, enter the password.
Latency	Specify the maximum latency of the stream in milliseconds. Default: 1000
Max. bitrate [kbps]	Specify the maximum expected bitrate for memory allocation. Recommended: 2X the actual bitrate, which will prevent buffer overruns (especially with VBR streams). Default: 8000. Note – Overflows will typically occur when the Max Bitrate isn’t sufficient.
Billing Codes	Billing codes are used to identify and differentiate traffic on a Zixi Broadcaster for billing purposes. When a billing code is added to a Source or Target, Zixi can track the traffic on that Broadcaster input or output separately from other inputs and outputs on the same Broadcaster. Billing codes are created by Zixi personnel on the Zixi Customer Portal for a particular organization.
Billing Code	Enter the billing code that corresponds to this stream. The relevant billing can be obtained from the organization that received the billing code from Zixi.
Billing password	Enter the password that corresponds to this billing code.
*Enable Decryption*	Select this checkbox to decrypt an encrypted stream.
Decryption type	If the stream has been encrypted, you can decrypt through the output by selecting this checkbox and specifying the type of encryption that was used. Select Automatic to decrypt a stream that has been encrypted using Automatic encryption. Only if the stream has not been encrypted, select None (default). Important Notice: if the stream has been encrypted you must decrypt it in the output
Decryption key	If the decryption type includes a key, enter the key to decrypt the stream during output.
*Enable Encryption*	Select this checkbox to encrypt the Output stream.
Encryption type (for Encryption enabled)	Specify the type of Encryption (AES 128/192/256). Click Generate to generate an encryption key or enter another encryption key.
Enable IFB/Talkback	Select this checkbox to enable IFB/Talkback for one-way communication from the director or assistant director to on-air talent or a remote location. Selecting the checkbox allows the decoder with a Zixi Receiver to send audio back to the encoder with a Zixi Feeder. This offers the ability to, for example, give audio feedback to the camera operator.
Port	The port that will be used to send the audio feedback.