FLV files are flash video files used for animations on many websites. Due to their less-than-ideal compatibility with Mac OS and many popular players like iPod, PSP, etc., it is necessary to convert FLV videos to MP4 format. The following steps will guide you in converting FLV (Flash Video) to MP4 for playback in QuickTime, Apple TV, iPod, iPhone, for editing in iMovie, Final Cut Pro, or for embedding in PowerPoint, etc.