As a best FLV video converter, Free FLV Converter can not only convert FLV videos to other 2D video format, like MP4, AVI, MOV, M4V, etc. but also convert FLV, F4V, SWF video files to 3D videos. And the brilliant program can also help you to extract audio track from FLV, F4V, SWF video files. Popular audio formats supported like MP3, AC3 and AAC, you can get audio track from video files effortlessly.