Okay, look. If we’re going to be pedantic, let’s be pedantic. Speaking solely on U.S. law, format shifting is legal provided you don’t bypass a copy-protection mechanism which lacks an exemption granted by the Library of Congress. So, ripping a dvd in a way that circumvents css- illegal. But digitizing can be accompished via other means, video stream capture for example, and remains legal even if the most popular method is not.