# for NON-ac3 audio:

mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=720:480,harddup \
-srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:aspect=4/3:\
acodec=ac3:abitrate=192 -ofps 30000/1001 -o your_video.mpg The_Cabinet_of_Dr._Caligari.mpeg