What an overrated piece of garbage. Don't be fooled by their claim of perfect copies every time. This product does not work reliably! The resulting copies contain glitches in the form of subtle but common image blurrs on some DVD players and can be translated as far more obvious pixilation and freezing on other DVD players. This problem is most evident when the movie requires compression to fit onto a standard 4.7GB disk as indicated by the copy quality rating being below 100%. Even at 99% quality, the problem is very evident. I even had glitches with a copy rated at 100%. I tried using different brands and formats of writable and rewritable DVDs as well as different DVD burners and the result was always the same poor result. I emailed CloneDVD support about this and received no response . So don't waste your money buying this sub-standard software. Go and download DVDShrink 3.2. Its free and works perfectly very time.