Aimersoft DVD Backup for Mac is DVD copy software that can support D9 to D5 compression. With simple operation, it can save DVD in four different ways including directly burning to DVD disc, saving as DVD folder, copying into DVD media format that can be played by DVD Player directly, and converting as ISO file for easy movie management. Mac DVD Backup also offers three output options including Full Copy, Main Movie Copy and Customized Copy and supports external optical driver copy or exporting DVD movie to external hard disk. Key Features? 1. Fully support Snow Leopard. 2. Offer D9 to D5 Compression Function for Backup DVD Burn DVD movies to DVD blank disc by copying D9 to D5, D9 to D9, D5 to D5 and D5 to D9 with twice speed as before and 1:1 ratio original quality. 3. Three Different Copy Options to Burn DVD on Mac Support Main Movie to copy main movie only, Full Copy to copy DVD whole information and Customized Copy as selective copy. 4. Save DVD to VIDEO_TS, ISO Image or DVD Player Media Copy DVD to VIDEO_TS file on your hard disc, burn DVD to ISO Image file on Mac for better management of DVD movies or copy DVD to .dvdmedia format which can be played directly by the DVD Player on Mac as a new way to make movie 5. Support External Driver and Hard Disk Burn DVD with external optical driver available, and save DVD movies to external hard disk or portable devices such as PSP, iPod, etc. 6. Easy Operation & User-Friendly Design DVD titles, duration, size and setting options shown on the same interface and with process percentage bar indicating in the icon.