Acer B1-720 - Manual (Page 34)

34 - Using the camera and camcorder
In the camera window, the controls at the top of the screen allow you
to change settings. The controls at the bottom allow you to take a
picture, select camera or camcorder, zoom in or out, and view the last
picture/video taken.
Tap the Record button and the camcorder immediately begins filming.
While filming, you are unable to access camera/camcorder settings.
Tap the red Stop recording button to stop filming.
Current recording length
Stop recording button