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#11
Not sure what you mean by "auto selection". With your camera you must have either 4:3 or 16:9 selected. There is no auto selection, there can't be. How would your camcorder tell what you were going to show the resultant video on 4:3 or 16:9 equipment. If you turn the camera off whilst in the 4:3 setting then the next time you turn it on it will be in 4:3.
If you are talking about selecting the aspect ratio to author your final DVD to then exactly the same info as above applies. Makes no difference what software you use.