#!/bin/bash

#make new directory where deinterlaced files are placed
mkdir deinterlaced

#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 

#cut image vertically in half and then double vertically, change to jpg if necessary
convert $VAR.png -sample 100%x50% -resize 100%x200%  deinterlaced/$VAR.png

echo $VAR

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

done