From time to time, I need to convert multi-language DVD to video files with subtitle burn-in and language set, like English with English subtitle or Chinese Cantonese with Chinese Tradition subtitle. HandBrake always gives me perfect results!!
HandBrake is an opensource, GPL-licensed software, with Windows, Mac OS and Ubuntu Linux support! Its interface is quite user friendly, allows for preview result and performance reasonably fast. Though its earlier versions may not be so stable, recent releases are stable enough for production use.
To download and try HandBrank, go here: http://handbrake.fr/
Remarks: For file to file format conversion, downsizing, etc., Any Video Converter is certainly my first choice. Yet, some functionalities are missing in AVC, and here comes my alternative - Total Media Converter.