The incredible sales boom of multimedia devices has created a problem where you have a video you can watch in one device, but not in others. Thus a tool like ViVi Video Converter 2.1.6 is very practical. It lets you easily convert among different formats, whether they are iPod, PSP, mobile phones, etc. You can transfer videos from your PC to these formats.
The principle formats it works with are: MPEG (1 and 2), AVI, DivX, xVid, WMV, MOV (Quicktime), iPod, 3GP, PSP and MP4.