Do some dark magic.

mubi.py

import os
import argparse
import requests
import progressbar

def main():
    parser = argparse.ArgumentParser(description='All your MUBI are belong to us.')
    parser.add_argument('film_id', type=int)
    parser.add_argument('resolution', choices=('360p', '480p', '640w', '720w', '1280w'))
    parser.add_argument('output_file')
    parser.add_argument('--start', type=int, default=0)
    parser.add_argument('--chunk_size', type=int, default=1024)
    args = parser.parse_args()

    with open(os.path.join(os.path.dirname(__file__), 'cookie.txt')) as f:
        cookie = f.read().strip()

    referer = 'http://us.mubi.com/assets/AuteursPlayer.swf?20120213000000'
    headers = {'Referer': referer, 'Cookie': cookie,
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:27.0) Gecko/20100101 Firefox/27.0',
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Language': 'en-US,en;q=0.5',
    'Accept-Encoding': 'gzip, deflate'}

    url_template = 'http://us.mubi.com/films/{}/secure_url?starttime={}&version={}'

    url = url_template.format(args.film_id, args.start, args.resolution)
    r1 = requests.get(url, headers=headers)
    print('Getting film URL from {}'.format(url))

    url = r1.text

    assert (url and url.startswith('http')), url

    r2 = requests.get(url, headers={'Referer': referer}, stream=True)

    length = int(r2.headers['content-length'])

    print('File size: {:.1f} MB').format(float(length)/(1024 * 1024))

    pbar = progressbar.ProgressBar(maxval=length,
            widgets=[progressbar.ETA(), progressbar.Bar(), progressbar.Percentage()])
    pbar.start()

    with open(args.output_file, 'w') as f:
        while True:
            f.write(r2.raw.read(args.chunk_size))
            length -= args.chunk_size
            if not length > 0:
                break
            pbar.update(pbar.currval + args.chunk_size)
    pbar.finish()

if __name__ == '__main__':
    main()