Milestone XProtect Smart Client 2013 - Manual (Page 130)

Milestone XProtect ® Smart Client
2014
User's Manual
www.milestonesys.com 130 Investigating incidents
Thumbnails with exclamation point
Depending on your navigation method, you may occasionally see placeholder thumbnails with
exclamation points if there is no recorded image from a specific point in time:
These appear when the Sequence Explorer cannot retrieve a proper thumbnail, for example, because
of a server communication error, a decoding error, or similar. However, placeholder thumbnails may
also appear when thumbnails retrieved from the surveillance system do not exactly match requested
points in time. This is because deviating thumbnails could otherwise cause confusion.
If you have selected slicing in Sequence Search, a placeholder thumbnail appears if the retrieved
thumbnail is outside of the requested time interval. Example: You request a time interval of 12:00:00,
12:00:30, and the first available thumbnail is at 12:00:33. If there are no recording sequences that
cover this interval, the system makes no attempt to retrieve a thumbnail and the next thumbnail
displayed is from the next interval (12:00:30-12:01:00). If there are recording sequences that cover this
interval, a placeholder thumbnail will appear instead.
In Sequence Search, a placeholder thumbnail appears if the retrieved thumbnail is more than three
seconds off compared with the requested time, for example the time when recording of the sequence
in question was triggered on the surveillance system.
You can still click a placeholder thumbnail to view video; it will take you to the first available recording
after the point in time represented by the placeholder thumbnail.