Here, i would like to share two wonderful video converters i have ever used. One is for Windows XP & Vista user, and another is for Mac user.
Windows XP & Vista Compatible Converter:
Any Video Converter Professional
It is an All-in-One video converting tool with easy-to-use graphical interface, fast converting speed and excellent video quality. It allows you to effortlessly convert video files between every format! If you have iPod, iPhone, Zune, PSP, Any Video Converter is right for you! It also supports importing video clips directly from YouTube, Google Video.
Mac Compatible Video Converter:
Tune4Mac Video Converter
It is a universal and versatile video conversion software for Mac users. This Mac video converter can convert between almost all video formats including ASF, AVI, MPEG1/2/4, WMV, MOV, MP4, 3GP as an excellent Mac AVI MPEG converter. With various outputs, Tune4Mac Video Converter is excellent for almost all popular video players such as PSP, PS3, iPod, iPhone, Apple TV, Zune, Archos, iRiver PMP, Creative Zen, etc.