#!/bin/bash

#file number to start with
COUNT=1

# total number of original files
OTOTAL=99

# loop to call up the files to process. calls up files numbered from 000-999 in accending order
while [ $COUNT -le $OTOTAL ]; do

if [ $COUNT -le $OTOTAL ]; then
    VAR=`printf "%03d" $COUNT`

fi 

#increase b&w character by lowering threshold to 50%, then using the compose argument multiply to replace all white parts
#of the b&w film with background image


convert sympony/deinterlace_$VAR.png -threshold 50% play/$VAR.png -compose multiply -composite threshold_overlay/overlay_$VAR.png

echo $VAR

#add 1 to the number of the last runthrough
let COUNT=COUNT+1


done