As of version 4.3 the script has full support for NTSC and PAL DVD sources.
However you will have had to of ripped the DVD yourself to 1 vob file.
If you are converting to any type other than psp720 you will most likely need to crop the source. Unless the video is true 16:9 or true 4:3 it will need cropping. I suggest testing crops with type ipod640. Crop until all of the black letterboxing is completely gone. Use options -z and -j to just do small encodes until you find the proper crop. Do not overcrop. Once you think you got it cropped correct, then back off by 2 pixels to ensure you didn't overcrop. If you see a thin black line then you know its not overcropped. Use last crop command for your encode.