Ricardo Garcia
16 years ago
committed by
Ricardo Garcia
Ricardo Garcia
commit
4fa74b5252
2 changed files with 439 additions and 0 deletions
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438youtube-dl
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youtube-dl-old |
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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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# Author: Ricardo Garcia Gonzalez |
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# License: Public domain code |
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import htmlentitydefs |
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import httplib |
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import math |
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import netrc |
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import os |
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import os.path |
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import re |
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import socket |
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import string |
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import sys |
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import time |
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import urllib |
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import urllib2 |
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|
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std_headers = { |
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'User-Agent': 'UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0', |
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'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7', |
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'Accept': 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5', |
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'Accept-Language': 'en-us,en;q=0.5', |
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} |
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|
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simple_title_chars = string.ascii_letters.decode('ascii') + string.digits.decode('ascii') |
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|
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class FileDownloader(object): |
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"""File Downloader class. |
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|
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File downloader objects are the ones responsible of downloading the |
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actual video file and writing it to disk if the user has requested |
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it, among some other tasks. In most cases there should be one per |
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program. As, given a video URL, the downloader doesn't know how to |
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extract all the needed information, task that InfoExtractors do, it |
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has to pass the URL to one of them. |
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|
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For this, file downloader objects have a method that allows |
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InfoExtractors to be registered in a given order. When it is passed |
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a URL, the file downloader handles it to the first InfoExtractor it |
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finds that reports it's able to handle it. The InfoExtractor returns |
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all the information to the FileDownloader and the latter downloads the |
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file or does whatever it's instructed to do. |
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|
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File downloaders accept a lot of parameters. In order not to saturate |
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the object constructor with arguments, it receives a dictionary of |
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options instead. These options are available through the get_params() |
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method for the InfoExtractors to use. The FileDownloader also registers |
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itself as the downloader in charge for the InfoExtractors that are |
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added to it, so this is a "mutual registration". |
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|
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Available options: |
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|
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username: Username for authentication purposes. |
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password: Password for authentication purposes. |
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usenetrc: Use netrc for authentication instead. |
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quiet: Do not print messages to stdout. |
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format: Video format code. |
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outtmpl: Template for output names. |
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""" |
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|
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_params = None |
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_ies = [] |
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|
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def __init__(self, params): |
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self._ies = [] |
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self.set_params(params) |
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|
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@staticmethod |
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def pmkdir(filename): |
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"""Create directory components in filename. Similar to Unix "mkdir -p".""" |
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components = filename.split(os.sep) |
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aggregate = [os.sep.join(components[0:x]) for x in xrange(1, len(components))] |
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for dir in aggregate: |
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if not os.path.exists(dir): |
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os.mkdir(dir) |
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|
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@staticmethod |
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def format_bytes(bytes): |
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if bytes is None: |
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return 'N/A' |
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if bytes == 0: |
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exponent = 0 |
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else: |
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exponent = long(math.log(float(bytes), 1024.0)) |
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suffix = 'bkMGTPEZY'[exponent] |
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if exponent == 0: |
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return '%s%s' % (bytes, suffix) |
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converted = float(bytes) / float(1024**exponent) |
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return '%.2f%s' % (converted, suffix) |
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|
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@staticmethod |
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def calc_percent(byte_counter, data_len): |
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if data_len is None: |
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return '---.-%' |
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return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0)) |
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|
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@staticmethod |
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def calc_eta(start, now, total, current): |
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if total is None: |
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return '--:--' |
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dif = now - start |
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if current == 0 or dif < 0.001: # One millisecond |
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return '--:--' |
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rate = float(current) / dif |
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eta = long((float(total) - float(current)) / rate) |
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(eta_mins, eta_secs) = divmod(eta, 60) |
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if eta_mins > 99: |
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return '--:--' |
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return '%02d:%02d' % (eta_mins, eta_secs) |
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|
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@staticmethod |
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def calc_speed(start, now, bytes): |
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dif = now - start |
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if bytes == 0 or dif < 0.001: # One millisecond |
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return '%9s' % 'N/A b/s' |
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return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif)) |
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|
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@staticmethod |
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def best_block_size(elapsed_time, bytes): |
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new_min = max(bytes / 2.0, 1.0) |
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new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB |
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if elapsed_time < 0.001: |
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return int(new_max) |
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rate = bytes / elapsed_time |
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if rate > new_max: |
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return int(new_max) |
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if rate < new_min: |
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return int(new_min) |
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return int(rate) |
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|
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def set_params(self, params): |
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"""Sets parameters.""" |
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if type(params) != dict: |
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raise ValueError('params: dictionary expected') |
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self._params = params |
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|
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def get_params(self): |
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"""Get parameters.""" |
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return self._params |
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|
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def add_info_extractor(self, ie): |
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"""Add an InfoExtractor object to the end of the list.""" |
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self._ies.append(ie) |
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ie.set_downloader(self) |
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|
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def download(self, url_list): |
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"""Download a given list of URLs.""" |
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for url in url_list: |
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suitable_found = False |
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for ie in self._ies: |
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if not ie.suitable(url): |
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continue |
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# Suitable InfoExtractor found |
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suitable_found = True |
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for result in ie.extract(url): |
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if result is None: |
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continue |
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try: |
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filename = self._params['outtmpl'] % result |
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except (KeyError), err: |
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sys.stderr.write('ERROR: invalid output template: %s\n' % str(err)) |
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continue |
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try: |
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self.pmkdir(filename) |
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except (OSError, IOError), err: |
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sys.stderr.write('ERROR: unable to create directories: %s\n' % str(err)) |
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continue |
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try: |
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outstream = open(filename, 'wb') |
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except (OSError, IOError), err: |
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sys.stderr.write('ERROR: unable to open for writing: %s\n' % str(err)) |
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continue |
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try: |
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self._do_download(outstream, result['url']) |
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outstream.close() |
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except (OSError, IOError), err: |
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sys.stderr.write('ERROR: unable to write video data: %s\n' % str(err)) |
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continue |
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except (urllib2.URLError, httplib.HTTPException, socket.error), err: |
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sys.stderr.write('ERROR: unable to download video data: %s\n' % str(err)) |
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continue |
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break |
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if not suitable_found: |
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sys.stderr.write('ERROR: no suitable InfoExtractor: %s\n' % url) |
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|
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def _do_download(self, stream, url): |
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request = urllib2.Request(url, None, std_headers) |
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data = urllib2.urlopen(request) |
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data_len = data.info().get('Content-length', None) |
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data_len_str = self.format_bytes(data_len) |
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byte_counter = 0 |
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block_size = 1024 |
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start = time.time() |
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while True: |
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percent_str = self.calc_percent(byte_counter, data_len) |
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eta_str = self.calc_eta(start, time.time(), data_len, byte_counter) |
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speed_str = self.calc_speed(start, time.time(), byte_counter) |
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|
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if not self._params.get('quiet', False): |
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sys.stdout.write('\r[download] %s of %s at %s ETA %s' % |
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(percent_str, data_len_str, speed_str, eta_str)) |
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sys.stdout.flush() |
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|
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before = time.time() |
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data_block = data.read(block_size) |
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after = time.time() |
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data_block_len = len(data_block) |
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if data_block_len == 0: |
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break |
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byte_counter += data_block_len |
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stream.write(data_block) |
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block_size = self.best_block_size(after - before, data_block_len) |
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|
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if not self._params.get('quiet', False): |
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print |
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|
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if data_len is not None and str(byte_counter) != data_len: |
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raise ValueError('Content too short: %s/%s bytes' % (byte_counter, data_len)) |
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|
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class InfoExtractor(object): |
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"""Information Extractor class. |
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|
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Information extractors are the classes that, given a URL, extract |
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information from the video (or videos) the URL refers to. This |
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information includes the real video URL, the video title and simplified |
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title, author and others. It is returned in a list of dictionaries when |
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calling its extract() method. It is a list because a URL can refer to |
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more than one video (think of playlists). The dictionaries must include |
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the following fields: |
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|
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id: Video identifier. |
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url: Final video URL. |
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uploader: Nickname of the video uploader. |
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title: Literal title. |
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stitle: Simplified title. |
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ext: Video filename extension. |
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|
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Subclasses of this one should re-define the _real_initialize() and |
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_real_extract() methods, as well as the suitable() static method. |
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Probably, they should also be instantiated and added to the main |
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downloader. |
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""" |
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|
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_ready = False |
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_downloader = None |
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|
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def __init__(self, downloader=None): |
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"""Constructor. Receives an optional downloader.""" |
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self._ready = False |
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self.set_downloader(downloader) |
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|
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@staticmethod |
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def suitable(url): |
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"""Receives a URL and returns True if suitable for this IE.""" |
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return True |
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|
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def initialize(self): |
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"""Initializes an instance (login, etc).""" |
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if not self._ready: |
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self._real_initialize() |
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self._ready = True |
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|
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def extract(self, url): |
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"""Extracts URL information and returns it in list of dicts.""" |
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self.initialize() |
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return self._real_extract(url) |
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|
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def set_downloader(self, downloader): |
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"""Sets the downloader for this IE.""" |
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self._downloader = downloader |
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|
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def to_stdout(self, message): |
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if self._downloader is None or not self._downloader.get_params().get('quiet', False): |
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print message |
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|
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def to_stderr(self, message): |
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sys.stderr.write('%s\n' % message) |
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|
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def _real_initialize(self): |
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"""Real initialization process. Redefine in subclasses.""" |
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pass |
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|
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def _real_extract(self, url): |
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"""Real extraction process. Redefine in subclasses.""" |
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pass |
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|
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class YoutubeIE(InfoExtractor): |
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"""Information extractor for youtube.com.""" |
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|
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_LOGIN_URL = 'http://www.youtube.com/login?next=/' |
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_AGE_URL = 'http://www.youtube.com/verify_age?next_url=/' |
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_NETRC_MACHINE = 'youtube' |
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|
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def _real_initialize(self): |
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if self._downloader is None: |
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return |
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|
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username = None |
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password = None |
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downloader_params = self._downloader.get_params() |
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|
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# Attempt to use provided username and password or .netrc data |
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if downloader_params.get('username', None) is not None: |
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username = downloader_params['username'] |
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password = downloader_params['password'] |
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elif downloader_params.get('usenetrc', False): |
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try: |
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info = netrc.netrc().authenticators(self._NETRC_MACHINE) |
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if info is not None: |
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username = info[0] |
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password = info[2] |
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else: |
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raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE) |
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except (IOError, netrc.NetrcParseError), err: |
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self.to_stderr('WARNING: parsing .netrc: %s' % str(err)) |
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return |
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|
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if username is None: |
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return |
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|
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# Log in |
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login_form = { 'current_form': 'loginForm', |
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'next': '/', |
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'action_login': 'Log In', |
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'username': username, |
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'password': password, } |
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request = urllib2.Request(self._LOGIN_URL, urllib.urlencode(login_form), std_headers) |
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try: |
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self.to_stdout('[youtube] Logging in') |
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login_results = urllib2.urlopen(request).read() |
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if re.search(r'(?i)<form[^>]* name="loginForm"', login_results) is not None: |
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self.to_stderr('WARNING: Unable to log in: bad username or password') |
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return |
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except (urllib2.URLError, httplib.HTTPException, socket.error), err: |
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self.to_stderr('WARNING: Unable to log in: %s' % str(err)) |
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return |
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|
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# Confirm age |
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age_form = { 'next_url': '/', |
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'action_confirm': 'Confirm', } |
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request = urllib2.Request(self._AGE_URL, urllib.urlencode(age_form), std_headers) |
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try: |
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self.to_stdout('[youtube] Confirming age') |
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age_results = urllib2.urlopen(request).read() |
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except (urllib2.URLError, httplib.HTTPException, socket.error), err: |
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sys.exit('ERROR: Unable to confirm age: %s' % str(err)) |
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|
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def _real_extract(self, url): |
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# Extract video id from URL |
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mobj = re.match(r'^((?:http://)?(?:\w+\.)?youtube\.com/(?:(?:v/)|(?:(?:watch(?:\.php)?)?\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$', url) |
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if mobj is None: |
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self.to_stderr('ERROR: Invalid URL: %s' % url) |
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return [None] |
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video_id = mobj.group(2) |
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|
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# Downloader parameters |
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format_param = None |
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if self._downloader is not None: |
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params = self._downloader.get_params() |
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format_param = params.get('format', None) |
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|
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# Extension |
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video_extension = {18: 'mp4'}.get(format_param, 'flv') |
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|
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# Normalize URL, including format |
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normalized_url = 'http://www.youtube.com/watch?v=%s' % video_id |
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if format_param is not None: |
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normalized_url = '%s&fmt=%s' % (normalized_url, format_param) |
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request = urllib2.Request(normalized_url, None, std_headers) |
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try: |
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self.to_stdout('[youtube] %s: Downloading video webpage' % video_id) |
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video_webpage = urllib2.urlopen(request).read() |
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except (urllib2.URLError, httplib.HTTPException, socket.error), err: |
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sys.exit('ERROR: Unable to download video: %s' % str(err)) |
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self.to_stdout('[youtube] %s: Extracting video information' % video_id) |
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|
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# "t" param |
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mobj = re.search(r', "t": "([^"]+)"', video_webpage) |
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if mobj is None: |
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self.to_stderr('ERROR: Unable to extract "t" parameter') |
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return [None] |
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video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s' % (video_id, mobj.group(1)) |
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if format_param is not None: |
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video_real_url = '%s&fmt=%s' % (video_real_url, format_param) |
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|
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# uploader |
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mobj = re.search(r'More From: ([^<]*)<', video_webpage) |
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if mobj is None: |
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self.to_stderr('ERROR: Unable to extract uploader nickname') |
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return [None] |
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video_uploader = mobj.group(1) |
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|
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# title |
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mobj = re.search(r'(?im)<title>YouTube - ([^<]*)</title>', video_webpage) |
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if mobj is None: |
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self.to_stderr('ERROR: Unable to extract video title') |
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return [None] |
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video_title = mobj.group(1).decode('utf-8') |
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video_title = re.sub(u'&(.+?);', lambda x: unichr(htmlentitydefs.name2codepoint[x.group(1)]), video_title) |
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|
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# simplified title |
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simple_title = re.sub(u'([^%s]+)' % simple_title_chars, u'_', video_title) |
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simple_title = simple_title.strip(u'_') |
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|
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# Return information |
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return [{ 'id': video_id, |
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'url': video_real_url, |
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'uploader': video_uploader, |
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'title': video_title, |
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'stitle': simple_title, |
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'ext': video_extension, |
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}] |
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|
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if __name__ == '__main__': |
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try: |
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# General configuration |
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urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler())) |
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urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor())) |
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|
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# Information extractors |
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youtube_ie = YoutubeIE() |
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|
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# File downloader |
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fd = FileDownloader({ 'usenetrc': False, |
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'username': None, |
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'password': None, |
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'quiet': False, |
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'format': None, |
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'outtmpl': '%(id)s.%(ext)s' |
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}) |
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fd.add_info_extractor(youtube_ie) |
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fd.download([ 'http://www.youtube.com/watch?v=t7qdwI7TVe8', |
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'http://www.youtube.com/watch?v=IJyn3pRcy_Q', |
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'http://www.youtube.com/watch?v=DZRXe1wtC-M', ]) |
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|
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except KeyboardInterrupt: |
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sys.exit('\nERROR: Interrupted by user') |
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