I think that guy that works with transfering videos got confused with a proprietary format, DVCPRO, that some high-end Panasonic professional camcorders use. They can use a standard miniDV cassette, or a special larger cassette. Sony does a similar thing with their DVCAM format. These special formats run the tape faster, and record more information per frame, allowing a more professional result. Having a Panasonic DVC30, I can assure you that it is NOT a DVCPRO unit. It records in a normal DV format.
BTW, I am very happy with my DVC30. 😀