Convert AVI to 3gp

To convert your favorite video in 3gp format, in order to watch it in your cellphone, just do (trick from: http://goinggnu.wordpress.com/2007/02/13/convert-avi-to-3gp-using-ffmpeg/)

ffmpeg -i inputfile.avi -s qcif -vcodec h263 -acodec aac -ac 1 -ar 8000 -r 25 -ab 32 -y outputfile.3gp