Adding SRT Outputs

the srt output can be pulled to/from an srt enabled device 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 reference broadcaster versions and their associated srt library version 19 srt library 1 5 5 version 18 srt library 1 5 4 version 17 srt library 1 5 3 version 16 srt library 1 4 4 see the steps below to override the default srt library with an older version for compatibility with a downstream system to create an srt output in the zixi broadcaster outputs page, click + new output the new output window is displayed select the srt option (radio button) type in the unique identifier for this output in the output name the output stream name must be unique this output name becomes the srt stream id when connecting an srt client to this output 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 docid\ bp6mo9f2qbxmu6gurkog4 ) default selected select the log this stream checkbox if you would like to generate event logs for this output if you want to override the default version of the srt library used for compatibility with downstream systems, select the desired version from from srt version selector specify the output parameters (see output stream parameters table docid\ hga8ghai5r3ulris1o9xd below) if you want the output stream to be encrypted , set a password the password value serves as a passphrase and is used to generate a hash of the password the passphrase is not the aes key itself, but an input to a key derivation process that generates a 128, 192, or 256 bit key length the aes key length is established by combining the sender’s and the receiver’s key lengths during handshake see encrypting an srt output docid\ eggxlhwbshkltzwpd8amq for more details click ok the new srt 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 this port number can be used on multiple srt outputs by entering the desired port password (10 80) if you want the output stream to be encrypted , set a password the value should be between 10 to 80 characters the password value serves as a passphrase and is used to generate a hash of the password the passphrase serves both authentication and encryption purposes it is is not the aes key itself, but an input to a key derivation process that generates a 128, 192, or 256 bit key length see encrypting an srt output docid\ eggxlhwbshkltzwpd8amq for more details verify stream id enable this option to use a single port for multiple srt outputs the system will identify the stream by verifying its stream id latency (ms) specify a latency for the stream in milliseconds to learn more about latency, see latency considerations docid\ b5ijrtxuicwxu7rcmdhza encryption type select the encryption type that will be used the final aes key length is established by combining the sender’s and the receiver’s key lengths during handshake see encrypting an srt output docid\ eggxlhwbshkltzwpd8amq for more details bind to ip select from the drop down list the local ip address to be used for this output, or select any to enable any ip to be used srt version override the default version of the srt library used for compatibility with downstream systems 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 advanced mode the fields discussed below are optional and available only in advanced mode to enter advanced mode add the url parameter ?advanced=1 to the zixi broadcaster url in your browser and press enter/return to reload the page note the advanced mode settings are generally intended for advanced users and special cases if you do not understand the settings, you should probably accept the default values general latency offset \[ms] specify the additional buffering time in milliseconds increasing this value can improve stream stability in unstable network conditions, but will increase end to end delay default 0 ms enable ifb/talkback 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