Doesn't the deck you mention have a downscale facility? When I master HD to the HDW-F500 I can then take off a DVCAM copy using the decks's very good downscaler. I then can then make SD DVD's in the normal way. Alternatavely I downscale within my editing system (Media 100, also a good downscaler). Finally, another way is to use BitVice for your DVD's and that also contains a downscale option which I often use.