WMV stands for Windows Media Video. This file type was developed by Microsoft specifically for streaming; however, it can also be saved to a hard drive or disc media for playback with Windows Media Player and other types of players such as Winamp, DivX and VLC player. The current version of WMV is WMV9 which includes the feature of a high compression rate in order to fit large videos into a small amount of storage space, making it a great format for transferring over the internet.
To convert DVD to WMV on Mac OS X, a DVD to WMV Converter for Mac is a must have for you. there are many DVD converter programs available on the martket. DVD Ripper for Mac (snow leopard compatible) may be a good choice for you to start ripping DVD to WMV on Mac. It offers a free trial period so you may find it a good idea to try a program before purchasing it.
Note: If you are a Win user and want to rip DVD to WMV, please refer to DVD Ripper for Windows
Then, just insert your favorite DVD on the DVD-ROM and load your DVD files to DVD Ripper for Mac through "Load DVD". Alternatively, you can hit "Load IFO" to import IFO files. In a minute, your DVD files will be listed at the main panel. There you can learn your original video duration and trimmed video duration if you have trimmed your DVD movies.

Select "WMV" from the output formats list in "format" drop-down list. Go to "Output" to set the output directory to save the converted files. You can also adjust other settings such as video quality, audio track, Bitrates, aspect ratio, brightness, contrast, saturation, etc.

When the settings are done, click the "Start" button to start conversion. And then the program will automatically start to rip DVD to WMV file on Mac OS X.
That's all. With these steps, you can easily get your DVD converted to WMV on Mac computer. So, why not download DVD Ripper for Mac and have a try?