mencoder -of mpeg -mpegopts format=dvd -ovc lavc -oac lavc -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:keyint=18:vrc_maxrate=9800:vbitrate=4900:aspect=4/3:acodec=ac3:abitrate=192 origen.avi -o parte_3.mpg
mencoder -of mpeg -mpegopts format=dvd -ovc lavc -oac lavc -lavcopts \ vcodec=mpeg2video:vrc_buf_size=1835:keyint=18:vrc_maxrate=9800:vbitrate=4900:aspect=4/3:acodec=ac3:abitrate=192 \ origen.dv -o destino.mpg