DiscomVOBulatorPlus for Mac

From Ronin no Sakurakai:

DiscomVOBulator allows you to make a DVD backup of a DVD title track. It does *not* clone DVDs, or re-encode them. If your DVD title is too big to fit on a single DVD-R, it will automatically be split to fit onto 2 disks. You can then add chapter marks using the built-in Visual Chapter editor. Just move the playhead to where you want a new chapter and click the Mark button! Or you can apply the original DVD titles. The whole process from start to finish takes 1.5-2 hours, depending on drive and CPU speeds.

DiscomVOBulatorPlus Features:

• Speedier execution, about 25%
• Full retention of all audio tracks, automatically
  Your final DVD will contain all audio tracks of the original DVD.
• Auto joining for "short" Disk 2's to Disk 1 for one 4.3 GB DVD
• Auto chaptering
  Automatically make chapters every 5, 7, 10, 12 or 15 minutes
• DVD Folders output
  Output to VIDEO_TS/AUDIO_TS or .iso... your choice
• Subtitles
  Subtitles will be automatically retained. The colors of the subtitles will be off likely, however you can turn them on or off as they are *real* DVD subtitle tracks