HIKVISION DS-7104HGHI-F1/N User Manual page 135

Steps
Step 1 Select Tag from the drop-down list in the Playback interface.
Step 2 Choose channels, edit start time and end time, and then click Search to enter Search Result
interface.
You can enter keyword in the textbox
Step 3 Click button to play back the file.
You can click the Back button to return to the search interface.
Digital Video Recorder User Manual
Figure 6-11 Tag Management Interface
Figure 6-12 Video Search by Tag
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to search the tag on your command.