local ratio="$orig_height/$orig_width"

step=-1
unset completed
while [ ! "$completed" ]; do
	step=$(( $step + 1 ))

	local up_step=$(( $width + ($step * 16) ))
	local down_step=$(( $width - ($step * 16) ))
	for x_step in $down_step $up_step; do
		local x_width=$(( $x_step - ($x_step % 16) ))
		local x_height=$( echo "scale=0; $x_width*$ratio/1" | bc )
		if (( ($x_width % 16) + ($x_height % 16) == 0 )); then
			completed="y"
			width=$x_width
			height=$x_height
		fi
	done
done