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Administrator – a user that configures DW Spectrum.

Archive – video and audio data recorded from cameras.

Aspect Ratio (AR) – video dimensions. Most commonly used are: 4:3 and 16:9.

Bitrate – number of bytes per second. Used to measure video stream.

Client – the software used to connect to servers and view video streams.

Codec – video or audio compression.

Dual Streaming – enables a camera to provide two separate streams simultaneously, yielding bandwidth and processor savings on Client (see RADASS).

Export – allows to export a video footage from archive. Exported video can be viewed on any device.

FPS – Frames per Second. Used to measure video stream.

GPU – Graphic Processing Unit. The processor installed on the video card.

DW Spectrum Server Components – DW Spectrum Media Server and Enterprise Controller.

Item – video or image on Scene.

Layout – saved video items and their position, size and orientation.Used to present surveillance information to DW Spectrum user.

Live – ability to view cameras live in real-time mode.

Media Server Port – used by Media Server to process requests for recorded fragments and video data from DW Spectrum Client.

Motion Detection – indicates whether or not any motion occurred within camera's viewing zone.

Motion Mask – the area in viewing zone that does not trigger Motion Detection.

Multi-Video Export – an ability to backup several videos in a proprietary format or executable bundle.

Onvif – a unified protocol used for communication with cameras. See http://www.onvif.org/.

OS – Operating System.

Private (cameras) Network – the network used to transmit data from cameras to Media Server. It is not accessible from outside.

Public (Intranet) Network – the network used to connect to Media Server from outside. It can be used for either connecting Media Server to Enterprise Controller or configuring Server Components. It may or may not be connected to the Internet.

PTZ – Point, Tilt, Zoom (a camera must support PTZ for the feature to be used)

Resources – cameras, Media Servers, local video files, users and layouts.

RADASS – Resolution and Algorithmic Data Adaptive Scaling System. Enables dynamic switching of resolution to yield bandwidth savings and optimize processor load. Requires Dual-Streaming to be supported by the Cameras used.

RTSP Port – the port used by Media Server to process requests for media streams from DW Spectrum Client.

Server – the computer that DW Spectrum Media server is installed on.

Smart Motion Search – an ability to search by motion within the selected range. DW Spectrum will provide fragments with motion occurred in the specified region.

Super Administrator – an initial user with full access to DW Spectrum (his login is admin). This user cannot be deleted.

Sync – ability to play back several cameras simultaneously.

Preview Search – breaks down a period of time into smaller video segments. Example: a month broken into ten 3-day periods displaying them as separate video segments. Eases search of large archives.

Thumbnails – small snapshots of recorded footage. Used in searching for specific scenes.

URL – Uniform Resource Locator is a specific character string that constitutes a reference to an Internet/Intranet resource. Used to establish connection to Enterprise Controller.

Viewer – a user with a limited access to DW Spectrum (not permitted to change configuration).

Watermark – used to check validity of exported files. If a file was modified or altered in any way, watermark will fail.