QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 59)

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3.4 Video Playback
The videos on the NVR can be played by the local display. To use this feature, click on
the monitoring screen. Most of the icons on the playback screen are the same as those on
the monitoring screen. Please refer to Chapter 3.2 for the icon description.
Note: The playback access right to the IP cameras is required to play the videos. Login
the NVR as admin and edit the playback access right in ‘User Management’ by the
web-based administration interface.
When the playback screen is shown, select a camera channel on the NVR. Next, select the
start and end time of the video, click to start searching. The videos which match
the search criteria will be played automatically.
Note: The maximum time interval between the start and end time is 3 days.