How to Convert AVI file to FLV in Ubuntu Linux

You can easily convert FLV file to AVI and Vise versa with Simple commands

Convert FLV to AVI file: 

$ ffmpeg -i mavideo.flv mavideo.avi

Convert AVI to FLV file: 

$ffmpeg -i mavideo.avi mavideo.flv 

If  ffmpeg is not intalled
$ sudo apt-get install ffmpeg