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Page 116 / 145 Scroll up to view Page 111 - 115
116
DCS-6620G User’s Manual
D-Link Systems, Inc.
Using IP surveillance Software
Playback Program
(continued)
Normal (Single Frame) Mode
While in the normal (single frame) display mode, you can change the video currently displayed
by:
(1) Changing the database path for retrieving another one in the settings dialog of “System
Control” tool.
(2) Changing the location selector to another location in control area.
(3) Changing the playback method selector to “Full Range.”
(4) Changing the playback method selector to “Time Period.”
Period Start Time Label
Period End Time Label
Histogram Area
Under the normal display (single frame) mode, you can use all the tools provided with the
playback program, except the page control. In this mode, the two labels under the pull bar
show the starting and the ending time of the interval individually (as shown above).
Page 117 / 145
117
DCS-6620G User’s Manual
D-Link Systems, Inc.
Using IP surveillance Software
Playback Program
(continued)
Histogram Area
Dark Region
Inverted region
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.
Page 118 / 145
118
DCS-6620G User’s Manual
D-Link Systems, Inc.
Using IP surveillance Software
Playback Program
(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 in the jog dial 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 119 / 145
119
DCS-6620G User’s Manual
D-Link Systems, Inc.
Using IP surveillance Software
Playback Program
(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.
Page 120 / 145
120
DCS-6620G User’s Manual
D-Link Systems, Inc.
Using IP surveillance Software
Playback Program
(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.

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