#!/usr/bin/python

import sys
import os

infile = sys.argv[1]
outfile = infile[:infile.rfind('.')] + ".png"

sys.stdout.write("BEFORE: ")
sys.stdout.flush()
os.system("file %s" % infile)
os.system("convert %s -interlace PNG %s" % (infile, outfile))
sys.stdout.write("AFTER:  ")
sys.stdout.flush()
os.system("file %s" % outfile)