Figure 5-154
Play before mark time
Here you can set to begin playback from previous N seconds of the mark time.
Note
Usually, system can playbacks previous N seconds record if there is such kind of record file. Otherwise,
system playbacks from the previous X seconds when there is such as kind of record.
Mark Manager
Click the mark manager button in Figure 5-154; you can go to Mark Manager interface. See Figure 5-155.
System can manage all the record mark information of current channel by default. You can view all mark
information of current channel by time.