Telestream lightspeed live capture, Руководство пользователя

Страница: 158 / 350

Using the Live Capture Web Application
Triggers Determine the Method of Channel Control
158
Lightspeed Live Capture User Guide
Triggers Determine the Method of Channel Control
The Trigger that is set in the Capture action workflow for each channel determines the
method by which channel recording is controlled. For information about selecting
triggers and setting options, see
Trigger Settings in the Workflows chapter.
The following triggers are explained in this topic.
■
DAI Trigger
■
Manual Trigger
■
Recurring Segment Trigger
■
Schedule Trigger
■
Web Service Trigger
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. Channels set to DAI trigger are presented in a read-only status
unless
Allow manual stop is checked in the Capture action to expose a manual stop
button in the user interface.
The following steps explain how to set up an example DAI trigger. Steps shown here
may vary according to your needs:
1. Create a Capture workflow that uses a DAI trigger.