Dahua DH-XVR5104HS-4KL-I3 User Manual page 153

In the Tag Name box, enter a name.
Click OK.
This marked video file displays in the Tag List.
Playing Back Marked Video
This function is supported on single-channel playback.
In the Camera Name list, select one channel.
Click
Double-click the file that you want to play back.
To search the marked video by time, in the SEARCH box on the top of the page, enter the
time, and then click
Playing Back Time before the Tag
You can configure to play N seconds of the tagged video before the tagged time.
In the Tag Name box, enter the name of a tagged video.
In the Interval Before Tag box, enter N seconds.
Click
The playback starts from N seconds before the tagged time.
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Mark list
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User's Manual