Just to add a little to what @CubeAce has written, RYVT is not really a "video editor" in anything more than a very basic way; it is designed to allow the import to computer of, primarily, analogue video. It has very basic "editing" features but, as Ray says, we really need to know what it is you want to be able to do. With that information, we may be able to suggest how you might proceed.