Revo NVR - Manual (Page 68)

Part 4 - Search
68
Overlapped Recording Search
If the system's clock is changed to a point in the past,
overlapping recordings may be produced. Overlapped
recordings have to be searched in segments.
For example, making a recording from 1 o'clock to 5
o'clock, changing the system's clock at 5 o'clock to 3
o'clock, and then continuing to record until 6 o'clock
produces two recordings that overlap between 3
o'clock and 5 o'clock. This results in two segments for
the period between 3 and 5.
1:00 2:00 3:00 4:00 5:00
3:00 4:00 5:00 6:00
Segment 1
Segment 2
When searching overlapped video recordings, you can
choose a specific point in time or a time frame. If you
use the
Go to the Date/Time option and select a
point within the overlapped time period ( 4 o'clock, for
example), you must specify 4 o'clock in which of the
two existing segments.
If you use the Event Log Search or Motion
Detection option and select a time frame within the
overlapped time period (
4 o'clock to 5 o'clock,
for example), you must choose between the two
redundant sets of From and To values. Selectable
search ranges are as follows:
• 4 o'clock in segment 1 to 5 o'clock in segment 1
• 4 o'clock in segment 1 to 5 o'clock in segment 2
• 4 o'clock in segment 2 to 5 o'clock in segment 2