How to get 7,9 Gs on one DVD?

Hi there.
I have a “little” thingy that has 7,9 gigabytes and it’s running time is approx. 165 minutes. Now this thingy won’t fit on one single DVD no matter what I do.
But it originally did. So my question is what to do to get it fit on one DVD only?

You using dual layer discs? If not try DVDShrink.

If your source is DVD Folder or ISO Image, xilisoft dvd copy express also can make it.