dvd_menu () {
    local FILE_SRC="$1"
    local FILE_DST="$2"
    local VIDEO_FPS="$3"
    local VIDEO_GEOMETRY="$4"
    local MPEG_TO_ENC_N=""
    #
    touch $TEMPORARY
    #
    if   [ "$VIDEO_FPS" = "25" ]
    then
        MPEG_TO_ENC_N="p"
    else
        MPEG_TO_ENC_N="n"
    fi    
    #
    # Reduce the source picture to two colors: should be
    # black ink on white background.
    #
    convert -geometry $VIDEO_GEOMETRY! \
            -posterize 2 $FILE_SRC $TEMPORARY.background.jpg
    #
    # Reduce the source picture to two colors and set white to
    # transparent.
    #
    convert -geometry $VIDEO_GEOMETRY! \
            -transparent white \
            -posterize 2 $FILE_SRC $TEMPORARY.black.png
    #
    # Make a copy with blue color (instead of black).
    #
    convert -fill blue \
            -colorize 100% \
            $TEMPORARY.black.png $TEMPORARY.blue.png
    #
    # Make a copy with red color (instead of black).
    #
    convert -fill red \
            -colorize 100% \
            $TEMPORARY.black.png $TEMPORARY.red.png
    #
    # Make a copy with green color (instead of black).
    #
    convert -fill green \
            -colorize 100% \
            $TEMPORARY.black.png $TEMPORARY.green.png
    #
    # Make a movie with the menu.
    #
    jpeg2yuv -n 50 -I p -f $VIDEO_FPS -j $TEMPORARY.background.jpg | \
        mpeg2enc -n $MPEG_TO_ENC_N -f 3 -b 200 -o $TEMPORARY.m2v
    #
    # Make a silent sound track.
    #
    dd if="/dev/zero" bs=4 count=1600 | \
        toolame -b 128 -s 48 /dev/stdin $TEMPORARY.mp2
    #
    # Multiplex
    #
    mplex -f 8 -o $TEMPORARY.vob $TEMPORARY.m2v $TEMPORARY.mp2
    #
    # Prepare the Spumux XML file.
    #
    printf ""                                       > $TEMPORARY.spumux
    echo "<subpictures>"                           >> $TEMPORARY.spumux
    echo "  <stream>"                              >> $TEMPORARY.spumux
    echo "    <spu start=\"00:00:00.00\""          >> $TEMPORARY.spumux
    echo "       image=\"$TEMPORARY.black.png\""   >> $TEMPORARY.spumux
    echo "       select=\"$TEMPORARY.green.png\""  >> $TEMPORARY.spumux
    echo "       highlight=\"$TEMPORARY.red.png\"" >> $TEMPORARY.spumux
    echo "       force=\"yes\""                    >> $TEMPORARY.spumux
    echo "       autooutline=\"infer\""            >> $TEMPORARY.spumux
    echo "       outlinewidth=\"15\""              >> $TEMPORARY.spumux
    echo "       autoorder=\"rows\">"              >> $TEMPORARY.spumux
    echo "    </spu>"                              >> $TEMPORARY.spumux
    echo "  </stream>"                             >> $TEMPORARY.spumux
    echo "</subpictures>"                          >> $TEMPORARY.spumux
    #
    # Run Spumux.
    #
    spumux $TEMPORARY.spumux < $TEMPORARY.mpg > $TEMPORARY.vob
    #
    # Remove temporary files.
    #
    rm -f $TEMPORARY*
}