I am new to this forum and hope I am doing it correctly. When making a backup of a DVD that was (4) hours long using CloneDVD2 the resulting single DVD backup showed signs of pixelation due to the compression. Since my original DVD had (4) chapters plus previews, I unchecked the previews and chapters 3 and 4 for the first backup DVD. On the second backup, chapters 1 and 2 were unchecked with chapters 3 and 4 checked. The resulting two DVD's were as good as the original disk. Has there been a procedure in the forums on the correct procedure if possible to split a DVD into two DVD's for better quality using less compression than what I have described? Thanks!