FLV is a common video format that usually found on online video website such as YouTube and some others. In some cases, we want to convert the FLV video and save the audio into MP3 format. In Linux, especially Ubuntu, we can easily convert FLV to MP3 using FFMpeg package. See how we do it.
A. Install FFMpeg
sudo apt-get install ffmpeg
B. Convert FLV video to MP3
To convert, use the following command
ffmpeg -i /home/video/test.flv /home/music/test.mp3
Change the /home/video/test.flv with your flv video location and change /home/music/test.mp3 as the destination.