... GRID interface & smart search > Smart video detection: MD, camera blank, video loss > 3D intelligent positioning with ... Camera blank, Video loss), Alarm), StopRecording PriorityManual >Alarm >MD >RegularRecording Interval1~120 min. (default: 60 min.), Pre ... channelPlayback & BackupPlayback Channel1/2/4Search ModeTime/Date, Alarm, MD & Exact search (accurate to second), Smart searchPlayback FunctionsPlay ...