.dat to .avi converter for ubuntu

                            Many ubuntu users are confused to find a converter for ubuntu,
even i am.
                           Now i'm found a solution my friends...............

step1:   type in terminal 'sudo apt-get install mplayer mencoder' without '

step2:   let in.dat be the file you want to convert
                  out.avi output file;
step3: Type in terminal ------->
mencoder in.rmvb -oac mp3lame -lameopts preset=128 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1200 -ofps 25 -of avi -o out.avi

step4: Thats all.........