Telestream lightspeed live capture, Руководство пользователя

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Creating Capture & Tape Action Workflows
Creating and Activating the Capture Action Workflow
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Lightspeed Live Capture User Guide
Trigger Settings
The Trigger panel enables you to select the method you want to use to start and stop
live video input, and provides setting options for the trigger operation.
Select . Choose DAI, Manual, Recurring Segment, Schedule, or Web Service.
DAI Trigger
The DAI (Dynamic Ad Insertion) Trigger enables automatic recording to start and stop
based on incoming SCTE-104 markers contained in the VANC data stream of the
workflow’s SDI input. Recording begins when a Start Program marker is detected and
stops when an associated Stop Program marker with an Event ID that matches the Start
Program’s ID is detected. See more details below.
Single unique files are created for each Capture event.
Note: A Time-Shift buffer of 15 seconds or greater is required when using the DAI
Trigger.
Start Preroll . Enable to set the number of frames to preroll the start trigger.
Stop Preroll . Enable to set the number of frames to preroll the stop trigger.
Default Start Behaviors for DAI Trigger
A recording is started by the Capture action when one of the following is seen attached
to a sample on the source:
- SCTE splice insert data with Splice Insert_Type = 3.
- SCTE time signal data with a segmentation type ID of 0x10 indicating Program Start.