回答“Why does the optical zoom not work?”Digital zoom cannot be used in the following scene modes: Scene auto selector, Portrait, Night Portrait, Easy panorama, or Pet Portrait. Try changing it to a different scene mode to use the digital zoom.
回答“Why does the camera stop recording videos by itself?”The memory on the camera might be full. Try freeing up some of the memory. Alternatively you can just use a memory card. If you are already using a memory card use a new one.