Preserving 720x480 square aspect ratio in iDVD

Hi, I posted this question in the iDVD group and was told there might be a FCP answer.
I'm importing a 720x480 (3:2) aspect ratio movie with square pixels into iDVD. iDVD scrunches it up and makes everyone look too tall and thin, though the movie looks fine in QT. Are there any special settings in FCP when exporting that can assure the proper aspect ratio in iDVD? (I was told iDVD only supports 4:3 and 16:9, which may make this a moot question.)
thanks,
Scott

Denis Murphy wrote:
Where did you get this footage by the way? If you're creating square-pixel assets (in photoshop or after effects for example) for a SD NTSC project, you should create them at 720x534 (for 4:3) or 864x480 (for 16:9).
I created it from a FCP sequence with 720x480, square pixels, 24 frames per second. My goal is to output the sequence as a series of Targa still images which can be output to 35mm film. That's why I want the 3:2 ratio rather than 4:3, and I've discovered if I don't use square pixels the Targa still images are distorted.
I was able to get what I wanted in iDVD by 1) outputting my original 720x480 square sequence to quicktime; 2) reimporting it into FCP and inserting it in a 640x480 NTSC-CCIR 601 pixel aspect ratio (kind of like you suggested), 3) exporting that again as quicktime, and 4) importing that file into iDVD. The funny thing is, in the FCP 4:3 sequence the image looks distorted (scrunched from the sides so everyone looks too tall and thin), but when I import it into iDVD it stretches back out to normal again. (When I changed the pixels to square in the Browser before dropping it in the sequence, it looked fine in the sequence but stretched sideways in iDVD. Go figure.)
What a lot of back and forth! But I got what I want, and I thank you for your suggestion.
Now I'd like to figure out how to deal with what I suspect is frame slippage on the DVD from my original 24fps, but I think I can deal with that, as DVD is not the final output.
thanks!
Scott

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