channelwhenplaybackThis function is null if there is no record file or system is in smart search process.Note:All the operations here (such as playback speed, channel, time and progress) have relationship withhardware version. Some series NVRs do not support some functions or playback speeds.4.9.2.1 Smart SearchDuring the multiple-channel playback mode, double click one channel and then click the button,system begins smart search. System supports 396(22*18 PAL) and 330(22*15 NTSC) zones. Please leftclick mouse to select smart search zones. See Figure 4-72.Figure 4-72Click the , user can go to the smart search playback. Click it again, system stops smart searchplayback.Important System does not support motion detect zone setup during the full-screen mode. During the multiple-channel playback, system stops playback of rest channels if userimplement one-channel smart search.4.9.2.2 Accurate playback by timeSelect records from one day, click the list, user can go to the file list interface. User can input time at thetop right corner to search records by time. See image on the left side of the Figure 4-73 For example,input time 11:00.00 and then click Search button , user can view all the record files after 11:00.00(The records includes current time.). See image on the right side of the Figure 4-73 Double click a filename to playback.Note