Store sparse bundle disk images as a series of 24 bit losslessly-encoded PNG images. Let Flickr’s 1TB of storage hold them for you.

deimgify.py

#!/usr/bin/env python
''' Convert a series of PNG images to a sparse bundle disk image.

Image file names are passed in as command line arguments.

Example:
    ls *.png | xargs deimgify.py
    
Output:
    Goodtimes.sparsebundle/Info.bckup
    Goodtimes.sparsebundle/Info.plist
    Goodtimes.sparsebundle/bands/0
    Goodtimes.sparsebundle/bands/1
    Goodtimes.sparsebundle/bands/2
    ...
    Goodtimes.sparsebundle/token
'''
from struct import unpack
from os.path import dirname
from os import makedirs
from PIL import Image
from sys import argv

for img_path in argv[1:]:

    image = Image.open(img_path)
    bytes = image.tostring()
    row_len = image.size[0] * 3
    
    #
    # First row of pixels is a pair of lengths and the filename.
    #
    len_path, len_data = unpack('!II', bytes[:8])
    data_path = bytes[8:8 + len_path].decode('utf8')

    #
    # Subsequent rows are the raw data.
    #
    data = bytes[row_len:row_len + len_data]
    
    try:
        makedirs(dirname(data_path))
    except OSError:
        pass
    
    with open(data_path, 'w') as output:
        output.write(data)
    
    print data_path

imgify.py

#!/usr/bin/env python
''' Convert a sparse bundle disk image to a series of PNG images.

Files in the disk image are passed in as command line arguments.

Example:
    find Goodtimes.sparsebundle -type f | xargs imgify.py
    
Output:
    imgify-VxZ1k5.png
    imgify-SynUtR.png
    ...
    imgify-rPfWxH.png
'''
from os import close
from struct import pack
from tempfile import mkstemp
from PIL import Image
from sys import argv

row_len = 1024 * 3
zeros = '\x00' * row_len

for data_path in argv[1:]:
    handle, img_path = mkstemp(dir='.', prefix='imgify-', suffix='.png')
    close(handle)

    with open(data_path) as input:
        
        path = data_path.encode('utf8')
        data = input.read()
        rows = []
        
        #
        # First row of pixels is a pair of lengths and the filename.
        #
        rows.append(pack('!II', len(path), len(data)) + path)
        rows[-1] += zeros[len(rows[-1]):]
        
        #
        # Subsequent rows are the raw data.
        #
        for off in range(0, len(data), row_len):
            rows.append(data[off:off + row_len])
            rows[-1] += zeros[len(rows[-1]):]
        
        img = Image.fromstring('RGB', (1024, len(rows)), ''.join(rows))
        img.save(img_path)
    
    print img_path