During video playback, you can press the Up/Down button to adjust the volume.
Thumbnail View
In Playback mode, turn the zoom control to display thumbnails of pictures and video clips on the LCD screen.
1.Display thumbnail with 2x2, 3x3 and 4x4 by switching the 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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