DVD iMovie/Toast - Need to stop the judders

[Syne Wave]

H/W G4 Digital Audio MAC, (OS X 10.2)

I have made this new movie which consists of old black and white footage, which has been updated with new colour footage, shot recently. When I output to DVD the results are dissapointing. So I am here today to see if anyone can shed any light on the problem for me.

STORY SO FAR

Source material
1/ Video output via S-Video Lead (Old B&W film)
2/ Sony Digital Handycam (not quite digital) transferred from Hi8 tape via same lead
TO
FORMAC Studio DV Hardware, Analogue to Digital converter
Output Via Firewire to Mac running iMovie 2.1.2 as capture software.

Edited movie intercutting sections of old b&w movie with newly shot stuff from Hi8.
Movie length is 35 mins.

THEN in iMovie

1/ Used "Export Movie" option selecting "Quicktime" option, as "Full Quality, Large"
Which gives settings as follows: DV-PAL, size 720 x 576, 25fps, No audio compression, stereo 48,000Htz. These are set, offers no alternatives.

2/ Second try used "Quicktime" option selecting "Expert" which I then chose DV-PAL, Best Quality, 25fps, 720 x 576. No audio compression, stereo 44,100Htz (I left a 4:3 check box, unticked, because if I do tick it it alters the 576 to 540 and I wish to view on a TV via DVD)

This was reasonably quick for iMovie to achieve.(Approx 39 mins)

Next I loaded the QUICKTIME .mov into TOAST 6 Titanium, where it was converted with MPEG (2?) which took about 5-6 hours creating VOB files with .inf & .bup. I can not find any information in the Toast program/help files/on the internet which tells me what MPEG it uses.
It then burned the lot to DVD. I wrote it at 4 speed as I use TDK -R which are optimised for 1-16 speed. The burner is a new Pioneer MAC DVD Superdrive.

THE RESULTS. AS viewed on TV from DVD player.

Both settings: Picture quality good, sharp, not grainy. BUT any movement like cars going towards and past you had the judders. Mainly occuring within the new colour footage.

I then tried another conversion/burn using 2/ (See above) with a lower frame size of 320 x 240, as it always defaulted to this. The results here were a poorer picture quality (softer, grainy) but no judder.

I viewed the QUICKTIME (output from iMovie prior to MPEGing) file in Quicktime and there was NO JUDDERING and good quality imaging.

If this problem is anything to do with interlacing / de-interlacing then I'm out of luck as NOWHERE does it offer that option.

[havema-1]

Sounds like wrong field dominance.

DV material is bottom field first. HDV is top field first. A DVD can be either way: iDVD uses bottom field first but commercial DVDs are often top field first.

So there is a chance that the field dominance can sometimes be incorrect if the capturing, DV editing and DVD encoding applications don't properly take care of it.

Does FORMAC Studio DV allow you to set field dominance to bottom field first?

FWIW, JES Deinterlacer allows you to change field dominance, but I'd set it right while doing the digitizing in the first place.