I think that if you save a movie in your hard disk in AVI format from a Digital Source or an Analog Source is the same, because the AVI format is Digital like other media on the computer, I think that the only change is the quality. A friend of mine has a Miro DC-10 and a Sony Camcorder (no digital) and he could save in AVI, MPEG, and other formats, but not to the same quality that a digital. Of course, Im not a specilist!