Network Video Recorder User Manual 
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2.  Move the mouse to the time bar to get the preview thumbnails of the video files. Select and double click on a 
required thumbnail to enter the full-screen playback.   
 
The thumbnail view is supported only in the 1X single-camera playback mode. 
6.2.3  Fast View  
You can hold the mouse to drag on the time bar to get the fast view of the video files.   
Steps: 
1.  Enter the playback interface and start to play the video files. 
 
Figure 6. 22 Playback Interface   
 
2.  Use the mouse to hold and drag through the playing time bar to fast view the video files.   
3.  Release the mouse to the required time point to enter the full-screen playback. 
 
The fast view is supported only in the 1X single-camera playback mode. 
6.2.4  Digital Zoom 
Steps: 
3.  Click the    button on the playback control bar to enter Digital Zoom interface. 
4.  You can zoom in the image to different proportions (1 to16X) by moving the sliding bar from    to  . 
You can also scroll the mouse wheel to control the zoom in/out.