-for i in saves/*.ppm; do
- convert $i saves/$(basename $i ppm)png
-done
+#for i in $1/*.ppm; do
+# convert $i $1/$(basename $i ppm)png
+#done
-mencoder mf://saves/*.png -ovc copy -o video/md.avi
+OUTFILE=md.avi
+[ -n "$2" ] && OUTFILE=$2
+
+mencoder mf://$1/*.png -ovc copy -o $1/$OUTFILE >/dev/null 2>&1