The process by which you convert a DVD to a file is called ripping a DVD, and there are many programs you can use to do it. A quick search for download software rip DVD program should yield you a number of options.
The reason that Public Access Producers are encouraged to use MPEG Streamclip is because it's cheap, (and often free), to install and set up, it has the ability to export files that conform to our required file specifications, and it's the program that is used at the Edina Playback Facility. This consistency allows us to better assist you in the process of converting, or ripping, your DVD should you need guidance.