Extract mdat atoms from QuickTime files

qt-extract.py

from hachoir_core.cmd_line import unicodeFilename
from hachoir_parser import createParser
import sys

def find_atoms(filename):
    parser = createParser(unicodeFilename(filename))
    atoms = []
    for field in parser:
        print '%s: %s %s + %s' % (field.description, field.name, field.absolute_address, field.size)
        if 'mdat' in field.description:
            atoms.append({'addr': field.absolute_address / 8,
                          'size': field.size / 8})
    return atoms

def extract(src, dst, start, size):
    f = open(src)
    f.seek(start)
    open(dst, 'w').write(f.read(size))

info = find_atoms(sys.argv[1])
print info
extract(sys.argv[1], sys.argv[2], info[0]['addr'], info[0]['size'])

Eric - did you ever get anywhere with your pursuit to extract the GPS data from the FalconZero F170 mov files?