CompMovieGuy said:

With all do respect Chewtobacca, this is 2010
You should as well as most people on this board should have a TV/monitor that will accept/do 1:1 pixel mapping

I do have a TV with such as setting, but that is not the issue, as Moth3r explained. DVDs are meant to take overscan into account; if they do not, they have been incorrectly produced. They should be viewed in Wide/16:9 mode even on a set with a 1:1 mode, or a small error in aspect ratio will result.

Needlessly resizing the video horizontally will lower quality. The script could easily be adjusted to remove the horizontal resizing.