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Page 116 / 145 Scroll up to view Page 111 - 115
116
Playback Program (continued)
Using IP surveillance Software (continued)
Histogram Area
The histogram area in the normal display (single frame) mode only shows the
events’ occurred time and the percentage of motion detection with red bars. If
you want to access the histogram area, you must change the area selection
indicator to the histogram area. You can mark one time interval you want to see
with a color-inverted region by dragging your mouse with the left button pressed
(as shown above). When you release the left button, the color-inverted region
will be enlarged to the whole histogram area. This color-inverted region will be
the new period the program is going to display. If you change your mind and
don’t want to see that period, you can cancel it by just pressing the right button
of your mouse with the left button still pressed. If you click on the left button
without dragging it, the action will be the same as clicking on the pull bar in the
same x-axis position. That means the playback system will shift to the pointed
time and show video on the displaying frame. Besides, the dark regions in the
histogram area mean there is no existing video data in that interval. If you click
on those regions, nothing will happen except a warning message will pop up.
Using Tools
In this section, the method of how to use the tools in the control panel (shown
in the main playback window) will be discussed.
Selector Tools
The figure below shows the selector tools. They are location selector, period
selector for the selection of the beginning time and the ending time, playback
method selector, and alert area selector.
Dark Region
Inverted region
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117
Playback Program (continued)
Using IP surveillance Software (continued)
Location selector
Period selector
Playback method selector
Alert area selector
Location Selector
The location selector is a control that lets you select the camera you want to
see (refer to the figure above). The location name is the same as the camera
name (text on video) unless you have specified otherwise.
Period Selector
Period selector provides you a precise way to choose the start time and the
end time of a new period. The end time must be later than the start time. After
you provide the correct start and end time, clicking on the “Play” button will play
the new period in the display area with changing the period start and end time
label. Besides, the pull bar and histogram area will change, too. If the selected
period is not present in the database, the data in the period selector will change
to the previous correct start and end time, and a warning message will be
displayed.
Page 118 / 145
118
Playback Program (continued)
Using IP surveillance Software (continued)
Playback Method Selector
Full Range
If you select this method, the database will be displayed from the
beginning to the end of this location. Any change in the period
selector will have no effect except when you change this selector
to “Time Period.”
Time Period
If you change the playback method to “Time Period”, you can
modify the start and end time in the period selector. When you
click on the “Play” button in the jog dial, the period you selected
will be displayed.
±
±
Since the program will record the previous start and end time in “Time Period”
and “Events Preview” mode, whenever you want to change the period selector
to see the other periods, you must change the playback method selector to the
mode you want to use first. Otherwise, the period selector will revert back to
the previous period
set the last time you changed the playback method selector.
Alert Area Selector
In the preview mode, the playback program can show the information of total
events of only one alert window each time. If you want to see the events of the
other two alert area windows, you must change the alert area selector to the
other window numbers. In the normal display mode, the alert window that the
alert area selector indicates will be highlighted with red rectangle if you checked
that window in the settings dialog. The alert area selector will be changed to
alert window 0 by default settings when you change the location selector to
another window.
Play Control
For the play control, the jog dial, shown in the figure below, is used to provide
the easiest method of controlling the video sequence display. All buttons can
control the displaying frame in the normal display mode.
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119
Playback Program (continued)
Using IP surveillance Software (continued)
Play
The supported “Play” button is an intelligent play user-interface.
The functionality of this button can vary to fit different
circumstances. In the normal display mode, clicking on the “Play”
button can restart the displaying video sequence.
Forward
This button is only valid when the displaying video sequence is
paused. It will display the next frame in that period when you click
on the “Forward” button one time.
Speed Indicator
Forward
Play
Stop
Pause
Stop
When you want to stop the displaying video sequence, you can
click on the “Stop” button. Note that once you press the “Stop”
button, the start point will be reset to the start of the present
period.
Pause/Resume
The “Pause” button provides you a way to pause the video
sequence display. When the displaying video is paused, click on
the “Pause” button again to resume the video display.
Fast Play and Slow Play
The camera supports a maximum of x16 fast forward play and
minimum of /16 slow forward play. This function helps you
browse the surveillance database with more flexibility. If you
want to change the playing speed, you just need to move the
speed indicator. To increase playing speed, move the indicator
in the clockwise direction. And to decrease playing speed,
move it in the counterclockwise direction. The current speed
that is set will be shown in the second column of status area.
±
±
±
±
±
Page 120 / 145
120
Playback Program (continued)
Using IP surveillance Software (continued)
Display Adjustment Tool
When you move the mouse cursor to the displaying area, the display adjustment
toolbox will appear. Using the display adjustment toolbox, you can change the
displaying video sequence to the size you want to see in the normal display
mode when you move the area selection indicator to the display area. The
figure below shows the display adjustment toolbox and its own three elements,
i.e. “Zoom In”, “Zoom Out”, and “Full Screen.”
Zoom In
When you click on the “Zoom In” button one time, the image size in the display
area will be magnified 12.5 percent to the original size. Due to the limitation of
the display area size, the maximum zoom in ratio supported is only 2.25:1 for
NTSC modulation mode and 1.875:1 for PAL modulation mode. If you want to
see the image in more detail, you can use the full screen function that is
supported in the same toolbox.
When you click on the “Zoom Out” button one time, the image size in the display
area will be minimized 12.5 percent to the original size. To show the location
and time information completely, the minimum zoom out ratio is limited in 0.5:1.
Zoom Out

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