How to Convert FLV to MP4, AVI, MPG, MOV, 3GP, MKV, WMV on Mac os?

FLV is a standard streaming video format for video-sharing websites, like YouTube, MySpace, Yahoo, Metacafe, Hulu, and so forth. I guess there are many .flv files saved in your Mac. Perhaps sometimes you want to watch them on your personal digital devices, like iPhone, iPod, Apple TV, PSP, PS3, Xbox