howto convert mpg to 3gp in ubuntu

if you want to convert mpg video file into 3gp so that you can play it in your phone. then use this command.

jacobian@jacobian-laptop:~$ ffmpeg -i cinnamon.MPG -s qcif -vcodec h263 -acodec aac -ac 1 -ar 8000 -r 25 -ab 32 -y outputfile.3gp