Adding SRT Streams
- Avinash Bisht (Unlicensed)
- Alon Men
SRT (Secure Reliable Transport) is an open-source video streaming protocol that brings pristine quality, low-latency live video over the public internet. This enables the Broadcaster to receive an SRT stream. The source of the stream is an SRT client that pushes the stream into Zixi Broadcaster. The connection is initiated by the source SRT client, which connects to the Listening Port on the Zixi Broadcaster. The connection can be password protected.
More details about SRT can be found at https://www.haivision.com/products/srt-secure-reliable-transport/
To Add an SRT Stream:
- In the Zixi Broadcaster Navigation menu, click the Inputs tab.
- In the Menu bar, click New Input. The Add a new input stream window is displayed.
Enter the unique Stream ID.
Note this must be identical (case sensitive) to the stream name configured at the source.
- Select the maximum concurrent connections to this stream from the Max. Outputs drop-down list. Default: Unlimited.
- Select the Show in Matrix checkbox to display this stream in the Matrix (see Using the Matrix). Default: Selected.
- Select SRT for the input stream.
- Specify the Stream Parameters (see Input Streams Parameters Table).
- If you want to specify Billing Codes to identify and differentiate traffic on a Zixi Broadcaster for billing purposes, select this checkbox (see Input Stream Parameter Table below).
- If you want to Enable time shift, select this checkbox (see Input Streams Parameters Table).
- If you want to Enable multicast on pull outputs, select this checkbox (see Input Streams Parameters Table).
- If you want to Enable encryption select this checkbox (see Input Streams Parameters Table). For more information, see Encrypting an Input Stream in Zixi Broadcaster.
- If you want to configure the Recording Parameters, specify them in the respective fields (see Input Streams Parameters Table).
- Click OK.
The “Input added” message appears on the top of the screen. The RIST Stream is added to the Zixi Broadcaster and now appears in the list of streams available in the Zixi Broadcaster inputs UI.
Input Stream Parameters Table
| Parameter | Description |
|---|---|
| Stream 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 |
| Verify Stream ID | Select this option to verify that the stream ID of this input matches the stream ID in the SRT feed before allowing the connection. |
| 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. |
| Bind to IP | Select from the drop-down list the local IP address to be used for this Input, OR select Any to enable any IP to be used. |
| 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 time shift | Select this checkbox to record the stream content and broadcast it after a specified delay. To deploy an input stream that uses the current stream's time shift, you need to configure a "Delayed" input stream. (See Adding Delayed Streams). |
Maximum delay [hh:mm:ss] (for Time Shift enabled) | Specify the maximum time delay of this input. |
Enable multicast on pull outputs | Select this checkbox to enable the transmission of this stream’s outputs as multicast. A Zixi receiver that will pull the stream will receive it in multicast. By default Zixi Broadcaster is configured to allow transparent fallback to unicast if it is out of the LAN. Requires enabling Multicast Pull in the Settings. |
Multicast-Only (for multicast enabled) | Selecting this checkbox will force the transmission of this stream only in multicast. |
Enable Encryption | Select this checkbox to encrypt the Input stream. For more information, see Encrypting an Input Stream in Zixi Broadcaster Broadcaster. |
Encryption type (for Encryption enabled) | Specify the type of Encryption (AES 128/192/256). |
Encryption key (for Encryption enabled) | Click Generate to generate an encryption key. The generated encryption key must be sent to the end-user to decipher the received encoded stream. |
Recording parameters | Select this checkbox to customize the recording parameters. |
Destination Type | Select the radio button for the desired storage type and then fill in the relevant parameters.
|
Record to Disk Parameters | |
File Name Template | Specify the file name pattern that Zixi will use to generate when saving the recorded content. A separate file will be generated for each recording up to the time specified in the Max recorded file duration parameter (see above). After this duration a new file will be generated. The file name pattern can include any string and up to five variables listed below. Only the %T=HH.MM.SS creation time is mandatory. You can change the order of these variables and add text as long as you maintain the legitimate structure of the file in Linux and Windows:
For example, the following pattern %Y_recording%T.ts will generate the following file name 2017_recording15:32:35.ts. |
Max recorded file duration [hours] | Specify the maximum time allotted for recording a video stream. Default: 2 hours |
Keep recorded files for [hours] | Specify the maximum time for storing the recording. Default: 0 hours |
Custom Path | Optionally specify a storage location for the recorded files that is relative to the root folder. This location bypasses the location specified as the root folder in the Settings > General screen. |
Record to S3 Parameters | |
File Name Template | Specify the file name pattern that Zixi will use to generate when saving the recorded content. A separate file will be generated for each recording up to the time specified in the Max recorded file duration parameter (see above). After this duration a new file will be generated. The file name pattern can include any string and up to five variables listed below. Only the %T=HH.MM.SS creation time is mandatory. You can change the order of these variables and add text as long as you maintain the legitimate structure of the file in Linux and Windows:
For example, the following pattern %Y_recording%T.ts will generate the following file name 2017_recording15:32:35.ts. |
Max recorded file duration [hours] | Specify the maximum time allotted for recording a video stream. Default: 2 hours |
URL | Specify the URL of the S3 bucket. |
Ignore TLS certificate errors | TLS certificate for S3 bucket might be detected as faulty if bucket name contains dot[s]. When this option is selected, Zixi Broadcaster will ignore the TLS certificate errors and transmit the stream to its destination. |
Access Key | The access key that is used for accessing the S3 bucket. |
Secret Key | The secret key that is used for accessing the S3 bucket. |