Compression Type Artifacts on Encoded DVDs

I've just upgraded to DVDS 4 from DVDS 2 and have encountered an artifacting problem (one tha I didn't have before). I'm trying to dump a 2 min project (originated in anamorphic DV) onto a DVD for a client. The original project looks fine. But when I burn the DVD, there is all this artifacting all over the place. I think it's happening during encoding. Is there a way to change the resolution in the software? Am I doing something wrong during export?
I've tried exporting straight to DVDS 4 from FCP (ver 5), and I've tried exporting an uncompressed QT file and dropping it in. They both end up looking the same.
Any help would be appreciated.
Tim Walton
P.S. - I shot the project using a Sony PDX-10, which is a native DV camera.

To add some more to this thread I just completed a test of short video sequence shot with a sony fx-1 (1080i60 hdv). Basically just a talking head and half body up against a blueish muslin shot in good light outdoors.
I exported the completed sequence as a self contained QT file in two formats.
1. hdv 1080i60 (330 mb)
2. uncompressed 10 bit (2.7 gb)
A. I ran the number 1. above thru MegaPEG HD Pro using the preset DVD NTSC 7.5 mbs Full D-1 29.97 mpeg-2. The only options I changed were I switched to 16:9 and Field Frames interlaced Top First and Mastering quality with Better Quality Bitrate.
B. I ran the number 1. above thru Compressor with the preset Best Quality 90 min 16:9 with Field Dominance Top First and 2 pass best with best for motion.
C. I then ran number 2 above thru MegaPEG HD Pro with everything the same as in (A) except for the setting Best (Fields) because I didnt have several hours to render.
D. I then ran number 2 above thru Compressor with the exact same settings as (B).
I then ran all of these thru DVDSP with the same settings. 16:9 Field Order Top Mode Two Pass and Motion Best.
RESULTS:
A. Took about 7 hours to render in MegaPEG Pro and the quality was so so. Colors somewhat washed out, movements showed some slight artifacts. Acceptable.
B. Looked about the same as A.
C. Colors were much brighter and richer but the screen was blurry and a transition I designed in Motion that has text looked blurry, not crisp at all. This was not acceptable at all. I must have some settings wrong because it didnt look good.
D. Winner. Crisp rich colors. On my LCD HDTV playing thru a xBox 360 which is not a good DVD player it looked great. Very good look, I could not see any problems with the video.
So for my setup extracting from fcp as a uncompressed 10 bit QT movie processed thru Compressor worked really well. A very noticeable difference in video quality from the other settings. I have to work more with MegaPEG HD Pro because I must be able to squeeze something better out of it.
Darrin
MBP 15.4 display / 2.0GHz Mac OS X (10.4.7)

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Exported as AIC current size. Both the SD & HD clips were now 960 x 540, so iMovie did some work on the SD clips.
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Message was edited by: JaysonM-Y

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Caused by: javax.media.jai.util.ImagingException: All factories fail for the operation "tiff"
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function(){return A.apply(null,[this].concat($A(arguments)))}
evan_messy wrote:
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Compression Type Artifacts on Encoded DVDs

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