#!/usr/bin/env python

import os
import sys
import glob
import os.path

books_dir = sys.argv[1]

images = glob.glob(os.path.join(books_dir, '*/image.jpg'))
for i in images:
    to_fname = i[:-4] + '.gif'
    print i, to_fname
    os.system('convert -limit memory 32 -limit map 32 -thumbnail x300 "%s" "%s"' % (i, to_fname))