Telestream lightspeed live capture, Руководство пользователя

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Using the Live Capture Web Application
Triggers Determine the Method of Channel Control
159
Lightspeed Live Capture User Guide
2. Load the rules XML file (example shown below) into the DAI configuration (using
Select Rules File) and make other DAI configuration selections. The file must
include program start and end triggers and the upid (identifier) of an ad to insert.
3. Use the Vantage Management Console > Variables panel to create a variable to
extract the upid value from the program triggers in the rules. (Using the upid to
populate a variable is optional.)
4. Use the variable in the Filename editor to capture the upid value as part of the
output base file name. (Using the upid to populate the filename from a variable is
optional.)
When the workflow operates correctly, the SCTE triggers in the source create a new job
at the expected frame, the job stops at the expected frame, and the name of the
inserted file matches the associated segmentation upid.
The following partial example illustrates a typical rules XML file:
<?xml version="1.0" encoding="utf‐8"?>
<triggers>
<rule>
<description>Default Start ‐ Program Start</description>
<captureaction>Start</captureaction>
<ignoreeventids/>
<extracttovariable
variablename="segmentation_upid_name">segmentation_upid</extracttovariable>
<scte104>
<multiple_operation_message>
<time_signal_request_data>
<pre‐roll_time>0</pre‐roll_time>
</time_signal_request_data>
<insert_segmentation_descriptor_request_data>
<segmentation_type_id>16</segmentation_type_id>
</insert_segmentation_descriptor_request_data>
</multiple_operation_message>
</scte104>
</rule>
<rule>
<description>Default Stop ‐ Program End</description>
<captureaction>Stop</captureaction>
<ignoreeventids/>
<scte104>
<multiple_operation_message>
<time_signal_request_data>
<pre‐roll_time>0</pre‐roll_time>
</time_signal_request_data>
<insert_segmentation_descriptor_request_data>
<segmentation_type_id>17</segmentation_type_id>