Convert your DVD to other suitable formats

Need to convert your dvd?.
Below is the command to do it.

for i in 3 4 5; // loop dvd chapters
do
mencoder dvd://1 -chapter $i-$i -o chapter$i.avi -oac mp3lame -ovc lavc -vf scale=320:240 -lavcopts vmax_b_frames=0:acodec=mp3:abitrate=128:vbitrate=256 -ofps 30;
done

Going through the loop makes our job easy for all the chapters.