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SerVision Embedded Video Gateway System Guide

Configuring System Settings 20

unit's speakers on-site. (At present, the MultiClient and the Symbian S60 cell-phone client applications

support this feature.)

 Audio In settings: Enable the microphone and control its volume. When a microphone is connected and

enabled, audio from the site can be heard along with live and recorded video.

GPS Settings

GPS makes it possible to track the location of an MVG or CVG-M unit by means of the unit’s built-in GPS

receiver. For additional information, see Configuring GPS, page 26. For information about viewing the unit's

location on a map, and tracking the route taken by the unit, please refer to the MultiClient User Guide.

Ignition-Off Shut-Down

The Ignition settings define whether the MVG or CVG-M unit should automatically shut down when the vehicle

ignition is turned off and, if so, how long the unit should continue operating after the ignition is turned off before it

shuts down.

Download Optimizations

Downloading recorded video uses system resources that would otherwise be available for other functions such as

recording or streaming live video. Download optimization settings are used to tweak the allocation of system

resources between downloading and other system processes. The following options can be selected:

 Stop Recording on Download: Stops all video recording when video is being downloaded from the Video

Gateway. This option increases the download speed, because it allocates more of the unit’s resources to the

download task. However, it also means that there may be gaps in the recorded video at the times that the video

is downloaded.

 Block New Connections while Downloading: Prevents the streaming of new live or recorded video streams

to a client application while downloading of recorded video is taking place. When this option is not selected,

the process of downloading may take somewhat longer to be completed. In addition, the framerate of video

displayed in the client may be reduced at times while the download is in progress. When this option is

selected, transmission of new live or recorded video streams to client applications does not take place while

downloading is underway, but existing streams are not closed.

 Disable TV-Out While Downloading: If a CCTV monitor is connected to the Video Gateway, stops

streaming of video to the monitor while downloading of recorded video is taking place

Additional System Settings

A number of other system settings can be configured in the General System Settings screen:

 Video Authentication: Adds a digital signature to each frame of video captured by the system. This signature

makes it possible to identify frames that have been tampered with. When a SerVision client application plays

video that has a digital signature and discovers a frame that has been changed from its original state, the status

of the stream indicates that the stream was modified. (Note: Only the current versions of the MultiClient and

the Player support this feature.)

 Outline Switching: Defines whether the system can activate different outlines automatically and, if so, what

type of trigger will cause the system to switch to a different outline, sensor events (from Sensor 1) or a

schedule. If neither type of automatic outline switching is selected, you can manually change the active outline

at any time. For additional information, see Defining Alternate Outlines, page 118.

 LAN Optimization: Speeds up the transmission of live video from the Video Gateway to PCs on the same

LAN. This feature is not recommended for use with other types of client connections – internet, cellular, etc.

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SerVision CVG-M Información técnica Pagina 21