I have a sony (HDR-XR150) AVCHD camcorder that films in full 1080p. In the manual it said i wouldn't be able to copy HD footage i recorded from my camera onto a DVD, as it would be in the wrong format. How could I convert the video so that it could be copied onto a dvd?

I have a mac and use Final Cut express and occasionally imovie to edit my films. I want a way to convert the video so it (hopefully) will not lose it's quality.

Thank you, much appreciated.