Fetch subtitle from http://splayer.org/

subtitle

#! /usr/bin/env python
# https://docs.google.com/document/d/1ufdzy6jbornkXxsD-OGl3kgWa4P9WO5NZb6_QYZiGI0/preview
import sys
import os
import md5
import requests

# calculate file hash
CHUNK_SIZE = 4 * 1024
hash = []

videoname = sys.argv[1] 
language = 'Chn' if len(sys.argv) < 3 else sys.argv[2]

info = os.stat(videoname)
videosize = info.st_size

def calculate(content):
    m = md5.new()
    m.update(content)
    return m.hexdigest()

f = open(videoname)

f.seek(4 * 1024, 0)
hash.append(f.read(CHUNK_SIZE))

f.seek(videosize / 3 * 2, 0)
hash.append(f.read(CHUNK_SIZE))

f.seek(videosize / 3, 0)
hash.append(f.read(CHUNK_SIZE))

f.seek(videosize - 8 * 1024, 0)
hash.append(f.read(CHUNK_SIZE))

hash = map(calculate, hash)
hash = ';'.join(hash)
f.close()

# fetch subtitles
payload = {'filehash': hash, 'pathinfo': videoname, 'format': 'json', 'lang': language}
res = requests.post('https://www.shooter.cn/api/subapi.php', data=payload)
index = 0
for subinfo in res.json():
    for fileinfo in subinfo['Files']:
        res = requests.get(fileinfo['Link'])
        subname = res.headers['content-disposition'][len('attachment; filename='):]
        name, ext = os.path.splitext(subname)
        subname = name + language + ext
        subname = "%s.%s%s%s" % (name, language, index, ext)
        print subname
        print fileinfo['Link']
        with open(subname, 'wb') as fd:
            for chunk in res.iter_content(CHUNK_SIZE):
                fd.write(chunk)
    index = index + 1