3.4 Live Preview Controls
There is a tool bar in a selected live preview window; it supports
some operations to the selected window.
3.4.1 Quick PTZ Control (Screen PTZ Control)
: To control PTZ camera for which the user has operational authority, the button will
appear and 8 directional icons will be shown pointing up, down, left, right, upper left,
upper right, lower left, lower right. An arrow logo will appear when the mouse pointer is
moved to the identified area. Click the left mouse button to control PTZ to the corresponding
direction, slide the mouse wheel to zoom in / out. Click the button again to exit PTZ
control.
3.4.2 Instant Playback
: Click and select palyback time to start instant playback and the tool bar
appears . It includes 6 function buttons: Play, Pause, Stop, Step
Backward and Step Forward. Click the stop button to exit instant playback.
Note: The system can not start record and instant playback without disk
pre-allocation.
3.4.3 Digital Zoom
Click the button , a digital zoom window will pop up at lower right 1/9 size of the live
preview window,as shown in Figure 3-17.The prompt window contains a red viewfinder box
with buttons on the right side. The size of digital zoom viewfinder window could be
adjusted by sliding mouse wheel or clicking buttons . Dragging the viewfinder and you
will see zoomed image in the live preview window. Click the button again to exit digital zoom.
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