During video playback, you can press the Up/Down button to adjust the volume.
Thumbnail View
In Playing Mode, adjust the Zoom button/zoom lever to the
side 
, so as to display thumbnail of photo or video in the screen.
1.Display thumbnail with 2x2, 3x3 and 4x4 by switching the
Zoom button/zoom lever.
2.Use Up/Down/Left/Right to select a photo or video clip to view.
If the 
indicator appears on the LCD, then a movie file is currently being displayed.
Press the 
button to restore a preview icon to its original image size.
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