I have converted any video format to 3gp file format using ffmpeg on one server. But on another server it not works.

Following is my script:

exec("ffmpeg -i test.flv -sameq -acodec libmp3lame -ar 22050 -ab 96000
    -deinterlace -nr 500 -s 320x240 -aspect 4:3 -r 20 -g 500 -me_range 20
    -b 270k -deinterlace -f flv -y test.3gp ");

Can anyone tell me what is wrong in script?

Following is my ffmpeg setting:

root@ninja [~]# ffmpeg -formats ffmpeg version CVS, build 3277056, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-mp3lame --enable-libogg --enable-gpl --disable-mmx --enable-shared built on Jun 17 2009 10:51:43, gcc: 4.1.2 20080704 (Red Hat 4.1.2-44)