User Manual

DS-73xxHUI-K4, DS-73xxHQI-K4, DS-90xxHUI-K8 DVR User Manual
UM DS-73xxHUI-K4 DS-73xxHQI-K4 DS-90xxHUI-K8 092017NA 90
Figure 113, Select Channels for Synchronous Playback
9. On the Event Playback interface, select the main stream or sub-stream
from the drop-down list for playback. The toolbar in the bottom part of
the Playback interface can be used to control the playing process.
Figure 114, Interface of Playback by Event
10. Pre-play and post-play can be configured for playback of event triggered
record files.
• Pre-play:
The time to play back before the event. For example, if an
alarm triggered the recording at 10:00, if the pre-play time is five
seconds, the video starts playback from 9:59:55.