for i in *.avi; do 

mencoder "$i"\
	-ovc xvid -xvidencopts pass=1:vhq=2:bvhq=1:chroma_opt:bitrate=-140000\
	-oac copy\
	-vf hqdn3d=2:1:2\
	-ofps 25 -o /dev/null;

mencoder "$i"\
	-ovc xvid -xvidencopts pass=2:vhq=2:bvhq=1:chroma_opt:bitrate=-140000\
	-oac copy\
	-vf hqdn3d=2:1:2\
	-ofps 25 -o /tmp/"$i"

rm divx2pass.log

mv /tmp/"$i" "$i"

done