Low quality DVD files

I have a problem with exported DVD file quality. This problem is not only with one project. I use FCP 7 and export mov file with the same setting as timeline footage and then convert into compressor but somehow I am getting very low quality DVD files. I have already checked the bit rate and the other settings.

This problem only started when I formatted my HDD and reinstalled the software. I also tried Toast 11 and Compressor 4.1 which are also giving me the same quality.

It seems like the mov file is making a problem but it's a high quality video file when I play. I also use ProRess 422 HQ file which is also giving me the same quality for DVD.

Please help me.