While each video driver has some of its own particular capabilities and requirements, each uses a common set of components
and characteristics that are the same among all video drivers.
This document describes some of the concepts, components, and functions that are common to most video drivers supported by
Niagara 4. Refer to the manufacturer’s documentation for equipment-specific video device capabilities and requirements. Refer to this
document’s appendixes for specific
Niagara 4 driver procedures and component properties
Some common video features include:
- Real-time camera control: pan, tilt, zoom, focus and iris control. You can create camera presets to use in association with
alarm events or for activation during live video display.
- Alarm generation: Some video devices, such as intelligent IP Cameras, DVRs, and NVRs, can provide motion-detection alarms.
The Video Framework routes these alarms to either the standard alarm console or to a special video alarm console that can
play back recorded video.
- Video action: The framework can route standard alarms to a video device and initiate a video action based on the alarm. For
example, an alarm may initiate an action to direct a camera to move and start recording one of several pre-configured targets.
DVRs can identify and store alarm-related footage for review.
- Support for a display attached to a DVR: The Video Framework supports a display connected to a DVR. You can choose which camera
feeds to view on the display.
- Px graphics: Video graphics using Px widgets can be configured to represent cameras.
- Video recording: Video recording devices on local stations may start recording as a result of an alarm event that occurs at
a remote station communicating over the NiagaraNetwork. These alarms can be archived to a Supervisor station and associated video viewed from the Supervisor station.
- Video playback: The Playback Viewer component supports HTML5 live and recorded video from any recording device.
- Video surveillance: The video Surveillance Viewer component supports HTML5 live and recorded video from any recording device. This includes displaying the viewer on the monitor
connected to a remote DVR.
- Video playback supports both recordings made for the JAVA-applet and HTML5.