I haven't managed to get any of the free DVD rippers working fully but I have downloaded a 2+ hour video CD film to my iMac using a DV camera to convert the video signal to DV, then importing it into Final Cut Express (you can also do it with iMovie) then exporting it as Mpeg4 with medium quality settings.
The final file size was 672Mb which is slightly too big for a CD-R but I will try again with higher quality settings (my aim is to get the file size to be just big enough to fit on a DVD-R so I can make copies of all my old VCD format films which Ican't get on DVD.
I will only be able to play them back on my computer using QT but that is better than losing them completely as my CDI player could give up the ghost any day (it is nearly ten years old).
One word of warning, the film (Rain Man) created 30 Gb of DV footage and the rendering to Mpeg4 took 1.5 hours.
iDVD has a limit of 1.5 hours on pojects it can burn to DVD-R so it is currently not possible to copy full DVD films to DVD-R on an "as-delivered" Mac even if you wanted to (which I know noone here would want to do

), the restriction is a time one rather than file size so even if you reduce the image quality or sound quality it will still refuse to burn it to DVD.
If I were you I would investigate the possibility of copying the trailers using the method I described and saving them as one long iMovie project with chapter keys then just burn it as a DVD project, that way you will get all your trailers on a single DVD with an automatic trailer selection menu. There is a limit on chapters in iDVD btw about 15 IIRC.
Amen-Moses