If you have an ASI card that is compatible with Zixi[1], the ASI card will convert the ASI-MPTS stream to an IP/MPTS stream and transmit it to the Zixi Broadcaster. By adding an ASI input stream, you can configure Zixi Broadcaster to listen to the specified ASI card from which the stream will be transmitted.
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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 in ZEC.
Select the maximum concurrent connections to this stream from the Max. Outputs drop-down list. Default: Unlimited.
Select the Show in Matrix check box to display this stream in the Matrix (see Using the Matrix). Default: Selected.
Select ASI for the input stream.
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Specify the Stream Parameters (see Input Stream Parameters Table).
If you want to Enable time shift, select this checkbox (see Input Stream Parameters Table).
If you want to Transmit as multicast, select this checkbox (see Input Stream Parameters Table).
If you want to Enable encryption, select this checkbox (see Input Stream 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 Stream Parameters Table).
Click OK.
The “Input added” message appears on the top of the screen. The ASI 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 | |
Card | select the available ASI card from the drop-down list. Only the physical ASI cards which have been installed on the machine will appear in the drop-down list. |
Max bitrate | 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. |
Read buffer | Specify the input read buffer to fill, before passing data to the application. Larger buffer size should be specified for higher bitrates; Smaller buffer size will be more responsive and smoother in lower bitrate streams. |
Adjust by local time | |
Smoothing latency | The Smoothing feature uses a buffer to time packets according to the stream’s clock. This is useful when there are bursts in the rate in which the stream arrives. The smoothing features creates a queue in the buffer, allowing smoother entry into the Broadcaster. The Smoothing parameter defines the size of the buffer in Milliseconds. A larger buffer enables smoother entry, however, it may influence the latency rate. |
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 ZEC 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. |
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[1] The following ASI cards have been tested and found to be compatible with Zixi on both Linux CentOS and Windows systems: DTA-2144B (4 ports) or DTA-2145 (2 ports). Additional types of ASI cards may also be compatible.