X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2FInfoExtractors.py;h=672ef9eedb40b1f8aa7db86e0a20b591c88511f3;hb=7976fcac5573bf4592d0e7369231cd59672baf7a;hp=f06a8e0c91ec717372379906e25b5b5dd12c590d;hpb=b3d14cbfa7d593a74cf1423ec58265abff6758a3;p=youtube-dl

diff --git a/youtube_dl/InfoExtractors.py b/youtube_dl/InfoExtractors.py
index f06a8e0c9..672ef9eed 100755
--- a/youtube_dl/InfoExtractors.py
+++ b/youtube_dl/InfoExtractors.py
@@ -1,3290 +1,4 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from __future__ import absolute_import
-
-import base64
-import datetime
-import itertools
-import netrc
-import os
-import re
-import socket
-import time
-import email.utils
-import xml.etree.ElementTree
-import random
-import math
-import operator
-import hashlib
-import binascii
-import urllib
-
-from .utils import *
-
+# Legacy file for backwards compatibility, use youtube_dl.extractor instead!
 
 from .extractor.common import InfoExtractor, SearchInfoExtractor
-from .extractor.dailymotion import DailymotionIE
-from .extractor.metacafe import MetacafeIE
-from .extractor.statigram import StatigramIE
-from .extractor.photobucket import PhotobucketIE
-from .extractor.vimeo import VimeoIE
-from .extractor.yahoo import YahooIE
-from .extractor.youtube import YoutubeIE, YoutubePlaylistIE, YoutubeUserIE, YoutubeChannelIE
-
-
-
-
-
-
-
-
-
-class ArteTvIE(InfoExtractor):
-    """arte.tv information extractor."""
-
-    _VALID_URL = r'(?:http://)?videos\.arte\.tv/(?:fr|de)/videos/.*'
-    _LIVE_URL = r'index-[0-9]+\.html$'
-
-    IE_NAME = u'arte.tv'
-
-    def fetch_webpage(self, url):
-        request = compat_urllib_request.Request(url)
-        try:
-            self.report_download_webpage(url)
-            webpage = compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to retrieve video webpage: %s' % compat_str(err))
-        except ValueError as err:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        return webpage
-
-    def grep_webpage(self, url, regex, regexFlags, matchTuples):
-        page = self.fetch_webpage(url)
-        mobj = re.search(regex, page, regexFlags)
-        info = {}
-
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        for (i, key, err) in matchTuples:
-            if mobj.group(i) is None:
-                raise ExtractorError(err)
-            else:
-                info[key] = mobj.group(i)
-
-        return info
-
-    def extractLiveStream(self, url):
-        video_lang = url.split('/')[-4]
-        info = self.grep_webpage(
-            url,
-            r'src="(.*?/videothek_js.*?\.js)',
-            0,
-            [
-                (1, 'url', u'Invalid URL: %s' % url)
-            ]
-        )
-        http_host = url.split('/')[2]
-        next_url = 'http://%s%s' % (http_host, compat_urllib_parse.unquote(info.get('url')))
-        info = self.grep_webpage(
-            next_url,
-            r'(s_artestras_scst_geoFRDE_' + video_lang + '.*?)\'.*?' +
-                '(http://.*?\.swf).*?' +
-                '(rtmp://.*?)\'',
-            re.DOTALL,
-            [
-                (1, 'path',   u'could not extract video path: %s' % url),
-                (2, 'player', u'could not extract video player: %s' % url),
-                (3, 'url',    u'could not extract video url: %s' % url)
-            ]
-        )
-        video_url = u'%s/%s' % (info.get('url'), info.get('path'))
-
-    def extractPlus7Stream(self, url):
-        video_lang = url.split('/')[-3]
-        info = self.grep_webpage(
-            url,
-            r'param name="movie".*?videorefFileUrl=(http[^\'"&]*)',
-            0,
-            [
-                (1, 'url', u'Invalid URL: %s' % url)
-            ]
-        )
-        next_url = compat_urllib_parse.unquote(info.get('url'))
-        info = self.grep_webpage(
-            next_url,
-            r'<video lang="%s" ref="(http[^\'"&]*)' % video_lang,
-            0,
-            [
-                (1, 'url', u'Could not find <video> tag: %s' % url)
-            ]
-        )
-        next_url = compat_urllib_parse.unquote(info.get('url'))
-
-        info = self.grep_webpage(
-            next_url,
-            r'<video id="(.*?)".*?>.*?' +
-                '<name>(.*?)</name>.*?' +
-                '<dateVideo>(.*?)</dateVideo>.*?' +
-                '<url quality="hd">(.*?)</url>',
-            re.DOTALL,
-            [
-                (1, 'id',    u'could not extract video id: %s' % url),
-                (2, 'title', u'could not extract video title: %s' % url),
-                (3, 'date',  u'could not extract video date: %s' % url),
-                (4, 'url',   u'could not extract video url: %s' % url)
-            ]
-        )
-
-        return {
-            'id':           info.get('id'),
-            'url':          compat_urllib_parse.unquote(info.get('url')),
-            'uploader':     u'arte.tv',
-            'upload_date':  unified_strdate(info.get('date')),
-            'title':        info.get('title').decode('utf-8'),
-            'ext':          u'mp4',
-            'format':       u'NA',
-            'player_url':   None,
-        }
-
-    def _real_extract(self, url):
-        video_id = url.split('/')[-1]
-        self.report_extraction(video_id)
-
-        if re.search(self._LIVE_URL, video_id) is not None:
-            self.extractLiveStream(url)
-            return
-        else:
-            info = self.extractPlus7Stream(url)
-
-        return [info]
-
-
-class GenericIE(InfoExtractor):
-    """Generic last-resort information extractor."""
-
-    _VALID_URL = r'.*'
-    IE_NAME = u'generic'
-
-    def report_download_webpage(self, video_id):
-        """Report webpage download."""
-        if not self._downloader.params.get('test', False):
-            self._downloader.report_warning(u'Falling back on generic information extractor.')
-        super(GenericIE, self).report_download_webpage(video_id)
-
-    def report_following_redirect(self, new_url):
-        """Report information extraction."""
-        self._downloader.to_screen(u'[redirect] Following redirect to %s' % new_url)
-
-    def _test_redirect(self, url):
-        """Check if it is a redirect, like url shorteners, in case return the new url."""
-        class HeadRequest(compat_urllib_request.Request):
-            def get_method(self):
-                return "HEAD"
-
-        class HEADRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
-            """
-            Subclass the HTTPRedirectHandler to make it use our
-            HeadRequest also on the redirected URL
-            """
-            def redirect_request(self, req, fp, code, msg, headers, newurl):
-                if code in (301, 302, 303, 307):
-                    newurl = newurl.replace(' ', '%20')
-                    newheaders = dict((k,v) for k,v in req.headers.items()
-                                      if k.lower() not in ("content-length", "content-type"))
-                    return HeadRequest(newurl,
-                                       headers=newheaders,
-                                       origin_req_host=req.get_origin_req_host(),
-                                       unverifiable=True)
-                else:
-                    raise compat_urllib_error.HTTPError(req.get_full_url(), code, msg, headers, fp)
-
-        class HTTPMethodFallback(compat_urllib_request.BaseHandler):
-            """
-            Fallback to GET if HEAD is not allowed (405 HTTP error)
-            """
-            def http_error_405(self, req, fp, code, msg, headers):
-                fp.read()
-                fp.close()
-
-                newheaders = dict((k,v) for k,v in req.headers.items()
-                                  if k.lower() not in ("content-length", "content-type"))
-                return self.parent.open(compat_urllib_request.Request(req.get_full_url(),
-                                                 headers=newheaders,
-                                                 origin_req_host=req.get_origin_req_host(),
-                                                 unverifiable=True))
-
-        # Build our opener
-        opener = compat_urllib_request.OpenerDirector()
-        for handler in [compat_urllib_request.HTTPHandler, compat_urllib_request.HTTPDefaultErrorHandler,
-                        HTTPMethodFallback, HEADRedirectHandler,
-                        compat_urllib_request.HTTPErrorProcessor, compat_urllib_request.HTTPSHandler]:
-            opener.add_handler(handler())
-
-        response = opener.open(HeadRequest(url))
-        if response is None:
-            raise ExtractorError(u'Invalid URL protocol')
-        new_url = response.geturl()
-
-        if url == new_url:
-            return False
-
-        self.report_following_redirect(new_url)
-        return new_url
-
-    def _real_extract(self, url):
-        new_url = self._test_redirect(url)
-        if new_url: return [self.url_result(new_url)]
-
-        video_id = url.split('/')[-1]
-        try:
-            webpage = self._download_webpage(url, video_id)
-        except ValueError as err:
-            # since this is the last-resort InfoExtractor, if
-            # this error is thrown, it'll be thrown here
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        self.report_extraction(video_id)
-        # Start with something easy: JW Player in SWFObject
-        mobj = re.search(r'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
-        if mobj is None:
-            # Broaden the search a little bit
-            mobj = re.search(r'[^A-Za-z0-9]?(?:file|source)=(http[^\'"&]*)', webpage)
-        if mobj is None:
-            # Broaden the search a little bit: JWPlayer JS loader
-            mobj = re.search(r'[^A-Za-z0-9]?file:\s*["\'](http[^\'"&]*)', webpage)
-        if mobj is None:
-            # Try to find twitter cards info
-            mobj = re.search(r'<meta (?:property|name)="twitter:player:stream" (?:content|value)="(.+?)"', webpage)
-        if mobj is None:
-            # We look for Open Graph info:
-            # We have to match any number spaces between elements, some sites try to align them (eg.: statigr.am)
-            m_video_type = re.search(r'<meta.*?property="og:video:type".*?content="video/(.*?)"', webpage)
-            # We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
-            if m_video_type is not None:
-                mobj = re.search(r'<meta.*?property="og:video".*?content="(.*?)"', webpage)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        # It's possible that one of the regexes
-        # matched, but returned an empty group:
-        if mobj.group(1) is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_url = compat_urllib_parse.unquote(mobj.group(1))
-        video_id = os.path.basename(video_url)
-
-        # here's a fun little line of code for you:
-        video_extension = os.path.splitext(video_id)[1][1:]
-        video_id = os.path.splitext(video_id)[0]
-
-        # it's tempting to parse this further, but you would
-        # have to take into account all the variations like
-        #   Video Title - Site Name
-        #   Site Name | Video Title
-        #   Video Title - Tagline | Site Name
-        # and so on and so forth; it's just not practical
-        video_title = self._html_search_regex(r'<title>(.*)</title>',
-            webpage, u'video title')
-
-        # video uploader is domain name
-        video_uploader = self._search_regex(r'(?:https?://)?([^/]*)/.*',
-            url, u'video uploader')
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'uploader': video_uploader,
-            'upload_date':  None,
-            'title':    video_title,
-            'ext':      video_extension,
-        }]
-
-
-class YoutubeSearchIE(SearchInfoExtractor):
-    """Information Extractor for YouTube search queries."""
-    _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
-    _MAX_RESULTS = 1000
-    IE_NAME = u'youtube:search'
-    _SEARCH_KEY = 'ytsearch'
-
-    def report_download_page(self, query, pagenum):
-        """Report attempt to download search page with given number."""
-        self._downloader.to_screen(u'[youtube] query "%s": Downloading page %s' % (query, pagenum))
-
-    def _get_n_results(self, query, n):
-        """Get a specified number of results for a query"""
-
-        video_ids = []
-        pagenum = 0
-        limit = n
-
-        while (50 * pagenum) < limit:
-            self.report_download_page(query, pagenum+1)
-            result_url = self._API_URL % (compat_urllib_parse.quote_plus(query), (50*pagenum)+1)
-            request = compat_urllib_request.Request(result_url)
-            try:
-                data = compat_urllib_request.urlopen(request).read().decode('utf-8')
-            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                raise ExtractorError(u'Unable to download API page: %s' % compat_str(err))
-            api_response = json.loads(data)['data']
-
-            if not 'items' in api_response:
-                raise ExtractorError(u'[youtube] No video results')
-
-            new_ids = list(video['id'] for video in api_response['items'])
-            video_ids += new_ids
-
-            limit = min(n, api_response['totalItems'])
-            pagenum += 1
-
-        if len(video_ids) > n:
-            video_ids = video_ids[:n]
-        videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
-        return self.playlist_result(videos, query)
-
-
-class GoogleSearchIE(SearchInfoExtractor):
-    """Information Extractor for Google Video search queries."""
-    _MORE_PAGES_INDICATOR = r'id="pnnext" class="pn"'
-    _MAX_RESULTS = 1000
-    IE_NAME = u'video.google:search'
-    _SEARCH_KEY = 'gvsearch'
-
-    def _get_n_results(self, query, n):
-        """Get a specified number of results for a query"""
-
-        res = {
-            '_type': 'playlist',
-            'id': query,
-            'entries': []
-        }
-
-        for pagenum in itertools.count(1):
-            result_url = u'http://www.google.com/search?tbm=vid&q=%s&start=%s&hl=en' % (compat_urllib_parse.quote_plus(query), pagenum*10)
-            webpage = self._download_webpage(result_url, u'gvsearch:' + query,
-                                             note='Downloading result page ' + str(pagenum))
-
-            for mobj in re.finditer(r'<h3 class="r"><a href="([^"]+)"', webpage):
-                e = {
-                    '_type': 'url',
-                    'url': mobj.group(1)
-                }
-                res['entries'].append(e)
-
-            if (pagenum * 10 > n) or not re.search(self._MORE_PAGES_INDICATOR, webpage):
-                return res
-
-class YahooSearchIE(SearchInfoExtractor):
-    """Information Extractor for Yahoo! Video search queries."""
-
-    _MAX_RESULTS = 1000
-    IE_NAME = u'screen.yahoo:search'
-    _SEARCH_KEY = 'yvsearch'
-
-    def _get_n_results(self, query, n):
-        """Get a specified number of results for a query"""
-
-        res = {
-            '_type': 'playlist',
-            'id': query,
-            'entries': []
-        }
-        for pagenum in itertools.count(0): 
-            result_url = u'http://video.search.yahoo.com/search/?p=%s&fr=screen&o=js&gs=0&b=%d' % (compat_urllib_parse.quote_plus(query), pagenum * 30)
-            webpage = self._download_webpage(result_url, query,
-                                             note='Downloading results page '+str(pagenum+1))
-            info = json.loads(webpage)
-            m = info[u'm']
-            results = info[u'results']
-
-            for (i, r) in enumerate(results):
-                if (pagenum * 30) +i >= n:
-                    break
-                mobj = re.search(r'(?P<url>screen\.yahoo\.com/.*?-\d*?\.html)"', r)
-                e = self.url_result('http://' + mobj.group('url'), 'Yahoo')
-                res['entries'].append(e)
-            if (pagenum * 30 +i >= n) or (m[u'last'] >= (m[u'total'] -1 )):
-                break
-
-        return res
-
-
-class BlipTVUserIE(InfoExtractor):
-    """Information Extractor for blip.tv users."""
-
-    _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?blip\.tv/)|bliptvuser:)([^/]+)/*$'
-    _PAGE_SIZE = 12
-    IE_NAME = u'blip.tv:user'
-
-    def _real_extract(self, url):
-        # Extract username
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        username = mobj.group(1)
-
-        page_base = 'http://m.blip.tv/pr/show_get_full_episode_list?users_id=%s&lite=0&esi=1'
-
-        page = self._download_webpage(url, username, u'Downloading user page')
-        mobj = re.search(r'data-users-id="([^"]+)"', page)
-        page_base = page_base % mobj.group(1)
-
-
-        # Download video ids using BlipTV Ajax calls. Result size per
-        # query is limited (currently to 12 videos) so we need to query
-        # page by page until there are no video ids - it means we got
-        # all of them.
-
-        video_ids = []
-        pagenum = 1
-
-        while True:
-            url = page_base + "&page=" + str(pagenum)
-            page = self._download_webpage(url, username,
-                                          u'Downloading video ids from page %d' % pagenum)
-
-            # Extract video identifiers
-            ids_in_page = []
-
-            for mobj in re.finditer(r'href="/([^"]+)"', page):
-                if mobj.group(1) not in ids_in_page:
-                    ids_in_page.append(unescapeHTML(mobj.group(1)))
-
-            video_ids.extend(ids_in_page)
-
-            # A little optimization - if current page is not
-            # "full", ie. does not contain PAGE_SIZE video ids then
-            # we can assume that this page is the last one - there
-            # are no more ids on further pages - no need to query
-            # again.
-
-            if len(ids_in_page) < self._PAGE_SIZE:
-                break
-
-            pagenum += 1
-
-        urls = [u'http://blip.tv/%s' % video_id for video_id in video_ids]
-        url_entries = [self.url_result(url, 'BlipTV') for url in urls]
-        return [self.playlist_result(url_entries, playlist_title = username)]
-
-
-class DepositFilesIE(InfoExtractor):
-    """Information extractor for depositfiles.com"""
-
-    _VALID_URL = r'(?:http://)?(?:\w+\.)?depositfiles\.com/(?:../(?#locale))?files/(.+)'
-
-    def _real_extract(self, url):
-        file_id = url.split('/')[-1]
-        # Rebuild url in english locale
-        url = 'http://depositfiles.com/en/files/' + file_id
-
-        # Retrieve file webpage with 'Free download' button pressed
-        free_download_indication = { 'gateway_result' : '1' }
-        request = compat_urllib_request.Request(url, compat_urllib_parse.urlencode(free_download_indication))
-        try:
-            self.report_download_webpage(file_id)
-            webpage = compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to retrieve file webpage: %s' % compat_str(err))
-
-        # Search for the real file URL
-        mobj = re.search(r'<form action="(http://fileshare.+?)"', webpage)
-        if (mobj is None) or (mobj.group(1) is None):
-            # Try to figure out reason of the error.
-            mobj = re.search(r'<strong>(Attention.*?)</strong>', webpage, re.DOTALL)
-            if (mobj is not None) and (mobj.group(1) is not None):
-                restriction_message = re.sub('\s+', ' ', mobj.group(1)).strip()
-                raise ExtractorError(u'%s' % restriction_message)
-            else:
-                raise ExtractorError(u'Unable to extract download URL from: %s' % url)
-
-        file_url = mobj.group(1)
-        file_extension = os.path.splitext(file_url)[1][1:]
-
-        # Search for file title
-        file_title = self._search_regex(r'<b title="(.*?)">', webpage, u'title')
-
-        return [{
-            'id':       file_id.decode('utf-8'),
-            'url':      file_url.decode('utf-8'),
-            'uploader': None,
-            'upload_date':  None,
-            'title':    file_title,
-            'ext':      file_extension.decode('utf-8'),
-        }]
-
-
-class FacebookIE(InfoExtractor):
-    """Information Extractor for Facebook"""
-
-    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook\.com/(?:video/video|photo)\.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
-    _LOGIN_URL = 'https://login.facebook.com/login.php?m&next=http%3A%2F%2Fm.facebook.com%2Fhome.php&'
-    _NETRC_MACHINE = 'facebook'
-    IE_NAME = u'facebook'
-
-    def report_login(self):
-        """Report attempt to log in."""
-        self.to_screen(u'Logging in')
-
-    def _real_initialize(self):
-        if self._downloader is None:
-            return
-
-        useremail = None
-        password = None
-        downloader_params = self._downloader.params
-
-        # Attempt to use provided username and password or .netrc data
-        if downloader_params.get('username', None) is not None:
-            useremail = downloader_params['username']
-            password = downloader_params['password']
-        elif downloader_params.get('usenetrc', False):
-            try:
-                info = netrc.netrc().authenticators(self._NETRC_MACHINE)
-                if info is not None:
-                    useremail = info[0]
-                    password = info[2]
-                else:
-                    raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
-            except (IOError, netrc.NetrcParseError) as err:
-                self._downloader.report_warning(u'parsing .netrc: %s' % compat_str(err))
-                return
-
-        if useremail is None:
-            return
-
-        # Log in
-        login_form = {
-            'email': useremail,
-            'pass': password,
-            'login': 'Log+In'
-            }
-        request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
-        try:
-            self.report_login()
-            login_results = compat_urllib_request.urlopen(request).read()
-            if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
-                self._downloader.report_warning(u'unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
-                return
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
-            return
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('ID')
-
-        url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
-        webpage = self._download_webpage(url, video_id)
-
-        BEFORE = '{swf.addParam(param[0], param[1]);});\n'
-        AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
-        m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
-        if not m:
-            raise ExtractorError(u'Cannot parse data')
-        data = dict(json.loads(m.group(1)))
-        params_raw = compat_urllib_parse.unquote(data['params'])
-        params = json.loads(params_raw)
-        video_data = params['video_data'][0]
-        video_url = video_data.get('hd_src')
-        if not video_url:
-            video_url = video_data['sd_src']
-        if not video_url:
-            raise ExtractorError(u'Cannot find video URL')
-        video_duration = int(video_data['video_duration'])
-        thumbnail = video_data['thumbnail_src']
-
-        video_title = self._html_search_regex('<h2 class="uiHeaderTitle">([^<]+)</h2>',
-            webpage, u'title')
-
-        info = {
-            'id': video_id,
-            'title': video_title,
-            'url': video_url,
-            'ext': 'mp4',
-            'duration': video_duration,
-            'thumbnail': thumbnail,
-        }
-        return [info]
-
-
-class BlipTVIE(InfoExtractor):
-    """Information extractor for blip.tv"""
-
-    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?blip\.tv/((.+/)|(play/)|(api\.swf#))(.+)$'
-    _URL_EXT = r'^.*\.([a-z0-9]+)$'
-    IE_NAME = u'blip.tv'
-
-    def report_direct_download(self, title):
-        """Report information extraction."""
-        self.to_screen(u'%s: Direct download detected' % title)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        # See https://github.com/rg3/youtube-dl/issues/857
-        api_mobj = re.match(r'http://a\.blip\.tv/api\.swf#(?P<video_id>[\d\w]+)', url)
-        if api_mobj is not None:
-            url = 'http://blip.tv/play/g_%s' % api_mobj.group('video_id')
-        urlp = compat_urllib_parse_urlparse(url)
-        if urlp.path.startswith('/play/'):
-            request = compat_urllib_request.Request(url)
-            response = compat_urllib_request.urlopen(request)
-            redirecturl = response.geturl()
-            rurlp = compat_urllib_parse_urlparse(redirecturl)
-            file_id = compat_parse_qs(rurlp.fragment)['file'][0].rpartition('/')[2]
-            url = 'http://blip.tv/a/a-' + file_id
-            return self._real_extract(url)
-
-
-        if '?' in url:
-            cchar = '&'
-        else:
-            cchar = '?'
-        json_url = url + cchar + 'skin=json&version=2&no_wrap=1'
-        request = compat_urllib_request.Request(json_url)
-        request.add_header('User-Agent', 'iTunes/10.6.1')
-        self.report_extraction(mobj.group(1))
-        info = None
-        try:
-            urlh = compat_urllib_request.urlopen(request)
-            if urlh.headers.get('Content-Type', '').startswith('video/'): # Direct download
-                basename = url.split('/')[-1]
-                title,ext = os.path.splitext(basename)
-                title = title.decode('UTF-8')
-                ext = ext.replace('.', '')
-                self.report_direct_download(title)
-                info = {
-                    'id': title,
-                    'url': url,
-                    'uploader': None,
-                    'upload_date': None,
-                    'title': title,
-                    'ext': ext,
-                    'urlhandle': urlh
-                }
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'ERROR: unable to download video info webpage: %s' % compat_str(err))
-        if info is None: # Regular URL
-            try:
-                json_code_bytes = urlh.read()
-                json_code = json_code_bytes.decode('utf-8')
-            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                raise ExtractorError(u'Unable to read video info webpage: %s' % compat_str(err))
-
-            try:
-                json_data = json.loads(json_code)
-                if 'Post' in json_data:
-                    data = json_data['Post']
-                else:
-                    data = json_data
-
-                upload_date = datetime.datetime.strptime(data['datestamp'], '%m-%d-%y %H:%M%p').strftime('%Y%m%d')
-                video_url = data['media']['url']
-                umobj = re.match(self._URL_EXT, video_url)
-                if umobj is None:
-                    raise ValueError('Can not determine filename extension')
-                ext = umobj.group(1)
-
-                info = {
-                    'id': data['item_id'],
-                    'url': video_url,
-                    'uploader': data['display_name'],
-                    'upload_date': upload_date,
-                    'title': data['title'],
-                    'ext': ext,
-                    'format': data['media']['mimeType'],
-                    'thumbnail': data['thumbnailUrl'],
-                    'description': data['description'],
-                    'player_url': data['embedUrl'],
-                    'user_agent': 'iTunes/10.6.1',
-                }
-            except (ValueError,KeyError) as err:
-                raise ExtractorError(u'Unable to parse video information: %s' % repr(err))
-
-        return [info]
-
-
-class MyVideoIE(InfoExtractor):
-    """Information Extractor for myvideo.de."""
-
-    _VALID_URL = r'(?:http://)?(?:www\.)?myvideo\.de/watch/([0-9]+)/([^?/]+).*'
-    IE_NAME = u'myvideo'
-
-    # Original Code from: https://github.com/dersphere/plugin.video.myvideo_de.git
-    # Released into the Public Domain by Tristan Fischer on 2013-05-19
-    # https://github.com/rg3/youtube-dl/pull/842
-    def __rc4crypt(self,data, key):
-        x = 0
-        box = list(range(256))
-        for i in list(range(256)):
-            x = (x + box[i] + compat_ord(key[i % len(key)])) % 256
-            box[i], box[x] = box[x], box[i]
-        x = 0
-        y = 0
-        out = ''
-        for char in data:
-            x = (x + 1) % 256
-            y = (y + box[x]) % 256
-            box[x], box[y] = box[y], box[x]
-            out += chr(compat_ord(char) ^ box[(box[x] + box[y]) % 256])
-        return out
-
-    def __md5(self,s):
-        return hashlib.md5(s).hexdigest().encode()
-
-    def _real_extract(self,url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'invalid URL: %s' % url)
-
-        video_id = mobj.group(1)
-
-        GK = (
-          b'WXpnME1EZGhNRGhpTTJNM01XVmhOREU0WldNNVpHTTJOakpt'
-          b'TW1FMU5tVTBNR05pWkRaa05XRXhNVFJoWVRVd1ptSXhaVEV3'
-          b'TnpsbA0KTVRkbU1tSTRNdz09'
-        )
-
-        # Get video webpage
-        webpage_url = 'http://www.myvideo.de/watch/%s' % video_id
-        webpage = self._download_webpage(webpage_url, video_id)
-
-        mobj = re.search('source src=\'(.+?)[.]([^.]+)\'', webpage)
-        if mobj is not None:
-            self.report_extraction(video_id)
-            video_url = mobj.group(1) + '.flv'
-
-            video_title = self._html_search_regex('<title>([^<]+)</title>',
-                webpage, u'title')
-
-            video_ext = self._search_regex('[.](.+?)$', video_url, u'extension')
-
-            return [{
-                'id':       video_id,
-                'url':      video_url,
-                'uploader': None,
-                'upload_date':  None,
-                'title':    video_title,
-                'ext':      u'flv',
-            }]
-
-        # try encxml
-        mobj = re.search('var flashvars={(.+?)}', webpage)
-        if mobj is None:
-            raise ExtractorError(u'Unable to extract video')
-
-        params = {}
-        encxml = ''
-        sec = mobj.group(1)
-        for (a, b) in re.findall('(.+?):\'(.+?)\',?', sec):
-            if not a == '_encxml':
-                params[a] = b
-            else:
-                encxml = compat_urllib_parse.unquote(b)
-        if not params.get('domain'):
-            params['domain'] = 'www.myvideo.de'
-        xmldata_url = '%s?%s' % (encxml, compat_urllib_parse.urlencode(params))
-        if 'flash_playertype=MTV' in xmldata_url:
-            self._downloader.report_warning(u'avoiding MTV player')
-            xmldata_url = (
-                'http://www.myvideo.de/dynamic/get_player_video_xml.php'
-                '?flash_playertype=D&ID=%s&_countlimit=4&autorun=yes'
-            ) % video_id
-
-        # get enc data
-        enc_data = self._download_webpage(xmldata_url, video_id).split('=')[1]
-        enc_data_b = binascii.unhexlify(enc_data)
-        sk = self.__md5(
-            base64.b64decode(base64.b64decode(GK)) +
-            self.__md5(
-                str(video_id).encode('utf-8')
-            )
-        )
-        dec_data = self.__rc4crypt(enc_data_b, sk)
-
-        # extracting infos
-        self.report_extraction(video_id)
-
-        video_url = None
-        mobj = re.search('connectionurl=\'(.*?)\'', dec_data)
-        if mobj:
-            video_url = compat_urllib_parse.unquote(mobj.group(1))
-            if 'myvideo2flash' in video_url:
-                self._downloader.report_warning(u'forcing RTMPT ...')
-                video_url = video_url.replace('rtmpe://', 'rtmpt://')
-
-        if not video_url:
-            # extract non rtmp videos
-            mobj = re.search('path=\'(http.*?)\' source=\'(.*?)\'', dec_data)
-            if mobj is None:
-                raise ExtractorError(u'unable to extract url')
-            video_url = compat_urllib_parse.unquote(mobj.group(1)) + compat_urllib_parse.unquote(mobj.group(2))
-
-        video_file = self._search_regex('source=\'(.*?)\'', dec_data, u'video file')
-        video_file = compat_urllib_parse.unquote(video_file)
-
-        if not video_file.endswith('f4m'):
-            ppath, prefix = video_file.split('.')
-            video_playpath = '%s:%s' % (prefix, ppath)
-            video_hls_playlist = ''
-        else:
-            video_playpath = ''
-            video_hls_playlist = (
-                video_filepath + video_file
-            ).replace('.f4m', '.m3u8')
-
-        video_swfobj = self._search_regex('swfobject.embedSWF\(\'(.+?)\'', webpage, u'swfobj')
-        video_swfobj = compat_urllib_parse.unquote(video_swfobj)
-
-        video_title = self._html_search_regex("<h1(?: class='globalHd')?>(.*?)</h1>",
-            webpage, u'title')
-
-        return [{
-            'id':                 video_id,
-            'url':                video_url,
-            'tc_url':             video_url,
-            'uploader':           None,
-            'upload_date':        None,
-            'title':              video_title,
-            'ext':                u'flv',
-            'play_path':          video_playpath,
-            'video_file':         video_file,
-            'video_hls_playlist': video_hls_playlist,
-            'player_url':         video_swfobj,
-        }]
-
-
-class ComedyCentralIE(InfoExtractor):
-    """Information extractor for The Daily Show and Colbert Report """
-
-    # urls can be abbreviations like :thedailyshow or :colbert
-    # urls for episodes like:
-    # or urls for clips like: http://www.thedailyshow.com/watch/mon-december-10-2012/any-given-gun-day
-    #                     or: http://www.colbertnation.com/the-colbert-report-videos/421667/november-29-2012/moon-shattering-news
-    #                     or: http://www.colbertnation.com/the-colbert-report-collections/422008/festival-of-lights/79524
-    _VALID_URL = r"""^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport)
-                      |(https?://)?(www\.)?
-                          (?P<showname>thedailyshow|colbertnation)\.com/
-                         (full-episodes/(?P<episode>.*)|
-                          (?P<clip>
-                              (the-colbert-report-(videos|collections)/(?P<clipID>[0-9]+)/[^/]*/(?P<cntitle>.*?))
-                              |(watch/(?P<date>[^/]*)/(?P<tdstitle>.*)))))
-                     $"""
-
-    _available_formats = ['3500', '2200', '1700', '1200', '750', '400']
-
-    _video_extensions = {
-        '3500': 'mp4',
-        '2200': 'mp4',
-        '1700': 'mp4',
-        '1200': 'mp4',
-        '750': 'mp4',
-        '400': 'mp4',
-    }
-    _video_dimensions = {
-        '3500': '1280x720',
-        '2200': '960x540',
-        '1700': '768x432',
-        '1200': '640x360',
-        '750': '512x288',
-        '400': '384x216',
-    }
-
-    @classmethod
-    def suitable(cls, url):
-        """Receives a URL and returns True if suitable for this IE."""
-        return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
-
-    def _print_formats(self, formats):
-        print('Available formats:')
-        for x in formats:
-            print('%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'mp4'), self._video_dimensions.get(x, '???')))
-
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url, re.VERBOSE)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        if mobj.group('shortname'):
-            if mobj.group('shortname') in ('tds', 'thedailyshow'):
-                url = u'http://www.thedailyshow.com/full-episodes/'
-            else:
-                url = u'http://www.colbertnation.com/full-episodes/'
-            mobj = re.match(self._VALID_URL, url, re.VERBOSE)
-            assert mobj is not None
-
-        if mobj.group('clip'):
-            if mobj.group('showname') == 'thedailyshow':
-                epTitle = mobj.group('tdstitle')
-            else:
-                epTitle = mobj.group('cntitle')
-            dlNewest = False
-        else:
-            dlNewest = not mobj.group('episode')
-            if dlNewest:
-                epTitle = mobj.group('showname')
-            else:
-                epTitle = mobj.group('episode')
-
-        self.report_extraction(epTitle)
-        webpage,htmlHandle = self._download_webpage_handle(url, epTitle)
-        if dlNewest:
-            url = htmlHandle.geturl()
-            mobj = re.match(self._VALID_URL, url, re.VERBOSE)
-            if mobj is None:
-                raise ExtractorError(u'Invalid redirected URL: ' + url)
-            if mobj.group('episode') == '':
-                raise ExtractorError(u'Redirected URL is still not specific: ' + url)
-            epTitle = mobj.group('episode')
-
-        mMovieParams = re.findall('(?:<param name="movie" value="|var url = ")(http://media.mtvnservices.com/([^"]*(?:episode|video).*?:.*?))"', webpage)
-
-        if len(mMovieParams) == 0:
-            # The Colbert Report embeds the information in a without
-            # a URL prefix; so extract the alternate reference
-            # and then add the URL prefix manually.
-
-            altMovieParams = re.findall('data-mgid="([^"]*(?:episode|video).*?:.*?)"', webpage)
-            if len(altMovieParams) == 0:
-                raise ExtractorError(u'unable to find Flash URL in webpage ' + url)
-            else:
-                mMovieParams = [("http://media.mtvnservices.com/" + altMovieParams[0], altMovieParams[0])]
-
-        uri = mMovieParams[0][1]
-        indexUrl = 'http://shadow.comedycentral.com/feeds/video_player/mrss/?' + compat_urllib_parse.urlencode({'uri': uri})
-        indexXml = self._download_webpage(indexUrl, epTitle,
-                                          u'Downloading show index',
-                                          u'unable to download episode index')
-
-        results = []
-
-        idoc = xml.etree.ElementTree.fromstring(indexXml)
-        itemEls = idoc.findall('.//item')
-        for partNum,itemEl in enumerate(itemEls):
-            mediaId = itemEl.findall('./guid')[0].text
-            shortMediaId = mediaId.split(':')[-1]
-            showId = mediaId.split(':')[-2].replace('.com', '')
-            officialTitle = itemEl.findall('./title')[0].text
-            officialDate = unified_strdate(itemEl.findall('./pubDate')[0].text)
-
-            configUrl = ('http://www.comedycentral.com/global/feeds/entertainment/media/mediaGenEntertainment.jhtml?' +
-                        compat_urllib_parse.urlencode({'uri': mediaId}))
-            configXml = self._download_webpage(configUrl, epTitle,
-                                               u'Downloading configuration for %s' % shortMediaId)
-
-            cdoc = xml.etree.ElementTree.fromstring(configXml)
-            turls = []
-            for rendition in cdoc.findall('.//rendition'):
-                finfo = (rendition.attrib['bitrate'], rendition.findall('./src')[0].text)
-                turls.append(finfo)
-
-            if len(turls) == 0:
-                self._downloader.report_error(u'unable to download ' + mediaId + ': No videos found')
-                continue
-
-            if self._downloader.params.get('listformats', None):
-                self._print_formats([i[0] for i in turls])
-                return
-
-            # For now, just pick the highest bitrate
-            format,rtmp_video_url = turls[-1]
-
-            # Get the format arg from the arg stream
-            req_format = self._downloader.params.get('format', None)
-
-            # Select format if we can find one
-            for f,v in turls:
-                if f == req_format:
-                    format, rtmp_video_url = f, v
-                    break
-
-            m = re.match(r'^rtmpe?://.*?/(?P<finalid>gsp.comedystor/.*)$', rtmp_video_url)
-            if not m:
-                raise ExtractorError(u'Cannot transform RTMP url')
-            base = 'http://mtvnmobile.vo.llnwd.net/kip0/_pxn=1+_pxI0=Ripod-h264+_pxL0=undefined+_pxM0=+_pxK=18639+_pxE=mp4/44620/mtvnorigin/'
-            video_url = base + m.group('finalid')
-
-            effTitle = showId + u'-' + epTitle + u' part ' + compat_str(partNum+1)
-            info = {
-                'id': shortMediaId,
-                'url': video_url,
-                'uploader': showId,
-                'upload_date': officialDate,
-                'title': effTitle,
-                'ext': 'mp4',
-                'format': format,
-                'thumbnail': None,
-                'description': officialTitle,
-            }
-            results.append(info)
-
-        return results
-
-
-class EscapistIE(InfoExtractor):
-    """Information extractor for The Escapist """
-
-    _VALID_URL = r'^(https?://)?(www\.)?escapistmagazine\.com/videos/view/(?P<showname>[^/]+)/(?P<episode>[^/?]+)[/?]?.*$'
-    IE_NAME = u'escapist'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        showName = mobj.group('showname')
-        videoId = mobj.group('episode')
-
-        self.report_extraction(videoId)
-        webpage = self._download_webpage(url, videoId)
-
-        videoDesc = self._html_search_regex('<meta name="description" content="([^"]*)"',
-            webpage, u'description', fatal=False)
-
-        imgUrl = self._html_search_regex('<meta property="og:image" content="([^"]*)"',
-            webpage, u'thumbnail', fatal=False)
-
-        playerUrl = self._html_search_regex('<meta property="og:video" content="([^"]*)"',
-            webpage, u'player url')
-
-        title = self._html_search_regex('<meta name="title" content="([^"]*)"',
-            webpage, u'player url').split(' : ')[-1]
-
-        configUrl = self._search_regex('config=(.*)$', playerUrl, u'config url')
-        configUrl = compat_urllib_parse.unquote(configUrl)
-
-        configJSON = self._download_webpage(configUrl, videoId,
-                                            u'Downloading configuration',
-                                            u'unable to download configuration')
-
-        # Technically, it's JavaScript, not JSON
-        configJSON = configJSON.replace("'", '"')
-
-        try:
-            config = json.loads(configJSON)
-        except (ValueError,) as err:
-            raise ExtractorError(u'Invalid JSON in configuration file: ' + compat_str(err))
-
-        playlist = config['playlist']
-        videoUrl = playlist[1]['url']
-
-        info = {
-            'id': videoId,
-            'url': videoUrl,
-            'uploader': showName,
-            'upload_date': None,
-            'title': title,
-            'ext': 'mp4',
-            'thumbnail': imgUrl,
-            'description': videoDesc,
-            'player_url': playerUrl,
-        }
-
-        return [info]
-
-class CollegeHumorIE(InfoExtractor):
-    """Information extractor for collegehumor.com"""
-
-    _WORKING = False
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?collegehumor\.com/video/(?P<videoid>[0-9]+)/(?P<shorttitle>.*)$'
-    IE_NAME = u'collegehumor'
-
-    def report_manifest(self, video_id):
-        """Report information extraction."""
-        self.to_screen(u'%s: Downloading XML manifest' % video_id)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('videoid')
-
-        info = {
-            'id': video_id,
-            'uploader': None,
-            'upload_date': None,
-        }
-
-        self.report_extraction(video_id)
-        xmlUrl = 'http://www.collegehumor.com/moogaloop/video/' + video_id
-        try:
-            metaXml = compat_urllib_request.urlopen(xmlUrl).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to download video info XML: %s' % compat_str(err))
-
-        mdoc = xml.etree.ElementTree.fromstring(metaXml)
-        try:
-            videoNode = mdoc.findall('./video')[0]
-            info['description'] = videoNode.findall('./description')[0].text
-            info['title'] = videoNode.findall('./caption')[0].text
-            info['thumbnail'] = videoNode.findall('./thumbnail')[0].text
-            manifest_url = videoNode.findall('./file')[0].text
-        except IndexError:
-            raise ExtractorError(u'Invalid metadata XML file')
-
-        manifest_url += '?hdcore=2.10.3'
-        self.report_manifest(video_id)
-        try:
-            manifestXml = compat_urllib_request.urlopen(manifest_url).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to download video info XML: %s' % compat_str(err))
-
-        adoc = xml.etree.ElementTree.fromstring(manifestXml)
-        try:
-            media_node = adoc.findall('./{http://ns.adobe.com/f4m/1.0}media')[0]
-            node_id = media_node.attrib['url']
-            video_id = adoc.findall('./{http://ns.adobe.com/f4m/1.0}id')[0].text
-        except IndexError as err:
-            raise ExtractorError(u'Invalid manifest file')
-
-        url_pr = compat_urllib_parse_urlparse(manifest_url)
-        url = url_pr.scheme + '://' + url_pr.netloc + '/z' + video_id[:-2] + '/' + node_id + 'Seg1-Frag1'
-
-        info['url'] = url
-        info['ext'] = 'f4f'
-        return [info]
-
-
-class XVideosIE(InfoExtractor):
-    """Information extractor for xvideos.com"""
-
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?xvideos\.com/video([0-9]+)(?:.*)'
-    IE_NAME = u'xvideos'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group(1)
-
-        webpage = self._download_webpage(url, video_id)
-
-        self.report_extraction(video_id)
-
-        # Extract video URL
-        video_url = compat_urllib_parse.unquote(self._search_regex(r'flv_url=(.+?)&',
-            webpage, u'video URL'))
-
-        # Extract title
-        video_title = self._html_search_regex(r'<title>(.*?)\s+-\s+XVID',
-            webpage, u'title')
-
-        # Extract video thumbnail
-        video_thumbnail = self._search_regex(r'http://(?:img.*?\.)xvideos.com/videos/thumbs/[a-fA-F0-9]+/[a-fA-F0-9]+/[a-fA-F0-9]+/[a-fA-F0-9]+/([a-fA-F0-9.]+jpg)',
-            webpage, u'thumbnail', fatal=False)
-
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'uploader': None,
-            'upload_date': None,
-            'title': video_title,
-            'ext': 'flv',
-            'thumbnail': video_thumbnail,
-            'description': None,
-        }
-
-        return [info]
-
-
-class SoundcloudIE(InfoExtractor):
-    """Information extractor for soundcloud.com
-       To access the media, the uid of the song and a stream token
-       must be extracted from the page source and the script must make
-       a request to media.soundcloud.com/crossdomain.xml. Then
-       the media can be grabbed by requesting from an url composed
-       of the stream token and uid
-     """
-
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?soundcloud\.com/([\w\d-]+)/([\w\d-]+)'
-    IE_NAME = u'soundcloud'
-
-    def report_resolve(self, video_id):
-        """Report information extraction."""
-        self.to_screen(u'%s: Resolving id' % video_id)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        # extract uploader (which is in the url)
-        uploader = mobj.group(1)
-        # extract simple title (uploader + slug of song title)
-        slug_title =  mobj.group(2)
-        simple_title = uploader + u'-' + slug_title
-        full_title = '%s/%s' % (uploader, slug_title)
-
-        self.report_resolve(full_title)
-
-        url = 'http://soundcloud.com/%s/%s' % (uploader, slug_title)
-        resolv_url = 'http://api.soundcloud.com/resolve.json?url=' + url + '&client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
-        info_json = self._download_webpage(resolv_url, full_title, u'Downloading info JSON')
-
-        info = json.loads(info_json)
-        video_id = info['id']
-        self.report_extraction(full_title)
-
-        streams_url = 'https://api.sndcdn.com/i1/tracks/' + str(video_id) + '/streams?client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
-        stream_json = self._download_webpage(streams_url, full_title,
-                                             u'Downloading stream definitions',
-                                             u'unable to download stream definitions')
-
-        streams = json.loads(stream_json)
-        mediaURL = streams['http_mp3_128_url']
-        upload_date = unified_strdate(info['created_at'])
-
-        return [{
-            'id':       info['id'],
-            'url':      mediaURL,
-            'uploader': info['user']['username'],
-            'upload_date': upload_date,
-            'title':    info['title'],
-            'ext':      u'mp3',
-            'description': info['description'],
-        }]
-
-class SoundcloudSetIE(InfoExtractor):
-    """Information extractor for soundcloud.com sets
-       To access the media, the uid of the song and a stream token
-       must be extracted from the page source and the script must make
-       a request to media.soundcloud.com/crossdomain.xml. Then
-       the media can be grabbed by requesting from an url composed
-       of the stream token and uid
-     """
-
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?soundcloud\.com/([\w\d-]+)/sets/([\w\d-]+)'
-    IE_NAME = u'soundcloud:set'
-
-    def report_resolve(self, video_id):
-        """Report information extraction."""
-        self.to_screen(u'%s: Resolving id' % video_id)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        # extract uploader (which is in the url)
-        uploader = mobj.group(1)
-        # extract simple title (uploader + slug of song title)
-        slug_title =  mobj.group(2)
-        simple_title = uploader + u'-' + slug_title
-        full_title = '%s/sets/%s' % (uploader, slug_title)
-
-        self.report_resolve(full_title)
-
-        url = 'http://soundcloud.com/%s/sets/%s' % (uploader, slug_title)
-        resolv_url = 'http://api.soundcloud.com/resolve.json?url=' + url + '&client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
-        info_json = self._download_webpage(resolv_url, full_title)
-
-        videos = []
-        info = json.loads(info_json)
-        if 'errors' in info:
-            for err in info['errors']:
-                self._downloader.report_error(u'unable to download video webpage: %s' % compat_str(err['error_message']))
-            return
-
-        self.report_extraction(full_title)
-        for track in info['tracks']:
-            video_id = track['id']
-
-            streams_url = 'https://api.sndcdn.com/i1/tracks/' + str(video_id) + '/streams?client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
-            stream_json = self._download_webpage(streams_url, video_id, u'Downloading track info JSON')
-
-            self.report_extraction(video_id)
-            streams = json.loads(stream_json)
-            mediaURL = streams['http_mp3_128_url']
-
-            videos.append({
-                'id':       video_id,
-                'url':      mediaURL,
-                'uploader': track['user']['username'],
-                'upload_date':  unified_strdate(track['created_at']),
-                'title':    track['title'],
-                'ext':      u'mp3',
-                'description': track['description'],
-            })
-        return videos
-
-
-class InfoQIE(InfoExtractor):
-    """Information extractor for infoq.com"""
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?infoq\.com/[^/]+/[^/]+$'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        webpage = self._download_webpage(url, video_id=url)
-        self.report_extraction(url)
-
-        # Extract video URL
-        mobj = re.search(r"jsclassref ?= ?'([^']*)'", webpage)
-        if mobj is None:
-            raise ExtractorError(u'Unable to extract video url')
-        real_id = compat_urllib_parse.unquote(base64.b64decode(mobj.group(1).encode('ascii')).decode('utf-8'))
-        video_url = 'rtmpe://video.infoq.com/cfx/st/' + real_id
-
-        # Extract title
-        video_title = self._search_regex(r'contentTitle = "(.*?)";',
-            webpage, u'title')
-
-        # Extract description
-        video_description = self._html_search_regex(r'<meta name="description" content="(.*)"(?:\s*/)?>',
-            webpage, u'description', fatal=False)
-
-        video_filename = video_url.split('/')[-1]
-        video_id, extension = video_filename.split('.')
-
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'uploader': None,
-            'upload_date': None,
-            'title': video_title,
-            'ext': extension, # Extension is always(?) mp4, but seems to be flv
-            'thumbnail': None,
-            'description': video_description,
-        }
-
-        return [info]
-
-class MixcloudIE(InfoExtractor):
-    """Information extractor for www.mixcloud.com"""
-
-    _WORKING = False # New API, but it seems good http://www.mixcloud.com/developers/documentation/
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/([\w\d-]+)/([\w\d-]+)'
-    IE_NAME = u'mixcloud'
-
-    def report_download_json(self, file_id):
-        """Report JSON download."""
-        self.to_screen(u'Downloading json')
-
-    def get_urls(self, jsonData, fmt, bitrate='best'):
-        """Get urls from 'audio_formats' section in json"""
-        file_url = None
-        try:
-            bitrate_list = jsonData[fmt]
-            if bitrate is None or bitrate == 'best' or bitrate not in bitrate_list:
-                bitrate = max(bitrate_list) # select highest
-
-            url_list = jsonData[fmt][bitrate]
-        except TypeError: # we have no bitrate info.
-            url_list = jsonData[fmt]
-        return url_list
-
-    def check_urls(self, url_list):
-        """Returns 1st active url from list"""
-        for url in url_list:
-            try:
-                compat_urllib_request.urlopen(url)
-                return url
-            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                url = None
-
-        return None
-
-    def _print_formats(self, formats):
-        print('Available formats:')
-        for fmt in formats.keys():
-            for b in formats[fmt]:
-                try:
-                    ext = formats[fmt][b][0]
-                    print('%s\t%s\t[%s]' % (fmt, b, ext.split('.')[-1]))
-                except TypeError: # we have no bitrate info
-                    ext = formats[fmt][0]
-                    print('%s\t%s\t[%s]' % (fmt, '??', ext.split('.')[-1]))
-                    break
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        # extract uploader & filename from url
-        uploader = mobj.group(1).decode('utf-8')
-        file_id = uploader + "-" + mobj.group(2).decode('utf-8')
-
-        # construct API request
-        file_url = 'http://www.mixcloud.com/api/1/cloudcast/' + '/'.join(url.split('/')[-3:-1]) + '.json'
-        # retrieve .json file with links to files
-        request = compat_urllib_request.Request(file_url)
-        try:
-            self.report_download_json(file_url)
-            jsonData = compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to retrieve file: %s' % compat_str(err))
-
-        # parse JSON
-        json_data = json.loads(jsonData)
-        player_url = json_data['player_swf_url']
-        formats = dict(json_data['audio_formats'])
-
-        req_format = self._downloader.params.get('format', None)
-        bitrate = None
-
-        if self._downloader.params.get('listformats', None):
-            self._print_formats(formats)
-            return
-
-        if req_format is None or req_format == 'best':
-            for format_param in formats.keys():
-                url_list = self.get_urls(formats, format_param)
-                # check urls
-                file_url = self.check_urls(url_list)
-                if file_url is not None:
-                    break # got it!
-        else:
-            if req_format not in formats:
-                raise ExtractorError(u'Format is not available')
-
-            url_list = self.get_urls(formats, req_format)
-            file_url = self.check_urls(url_list)
-            format_param = req_format
-
-        return [{
-            'id': file_id.decode('utf-8'),
-            'url': file_url.decode('utf-8'),
-            'uploader': uploader.decode('utf-8'),
-            'upload_date': None,
-            'title': json_data['name'],
-            'ext': file_url.split('.')[-1].decode('utf-8'),
-            'format': (format_param is None and u'NA' or format_param.decode('utf-8')),
-            'thumbnail': json_data['thumbnail_url'],
-            'description': json_data['description'],
-            'player_url': player_url.decode('utf-8'),
-        }]
-
-class StanfordOpenClassroomIE(InfoExtractor):
-    """Information extractor for Stanford's Open ClassRoom"""
-
-    _VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
-    IE_NAME = u'stanfordoc'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        if mobj.group('course') and mobj.group('video'): # A specific video
-            course = mobj.group('course')
-            video = mobj.group('video')
-            info = {
-                'id': course + '_' + video,
-                'uploader': None,
-                'upload_date': None,
-            }
-
-            self.report_extraction(info['id'])
-            baseUrl = 'http://openclassroom.stanford.edu/MainFolder/courses/' + course + '/videos/'
-            xmlUrl = baseUrl + video + '.xml'
-            try:
-                metaXml = compat_urllib_request.urlopen(xmlUrl).read()
-            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                raise ExtractorError(u'Unable to download video info XML: %s' % compat_str(err))
-            mdoc = xml.etree.ElementTree.fromstring(metaXml)
-            try:
-                info['title'] = mdoc.findall('./title')[0].text
-                info['url'] = baseUrl + mdoc.findall('./videoFile')[0].text
-            except IndexError:
-                raise ExtractorError(u'Invalid metadata XML file')
-            info['ext'] = info['url'].rpartition('.')[2]
-            return [info]
-        elif mobj.group('course'): # A course page
-            course = mobj.group('course')
-            info = {
-                'id': course,
-                'type': 'playlist',
-                'uploader': None,
-                'upload_date': None,
-            }
-
-            coursepage = self._download_webpage(url, info['id'],
-                                        note='Downloading course info page',
-                                        errnote='Unable to download course info page')
-
-            info['title'] = self._html_search_regex('<h1>([^<]+)</h1>', coursepage, 'title', default=info['id'])
-
-            info['description'] = self._html_search_regex('<description>([^<]+)</description>',
-                coursepage, u'description', fatal=False)
-
-            links = orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
-            info['list'] = [
-                {
-                    'type': 'reference',
-                    'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
-                }
-                    for vpage in links]
-            results = []
-            for entry in info['list']:
-                assert entry['type'] == 'reference'
-                results += self.extract(entry['url'])
-            return results
-        else: # Root page
-            info = {
-                'id': 'Stanford OpenClassroom',
-                'type': 'playlist',
-                'uploader': None,
-                'upload_date': None,
-            }
-
-            self.report_download_webpage(info['id'])
-            rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
-            try:
-                rootpage = compat_urllib_request.urlopen(rootURL).read()
-            except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-                raise ExtractorError(u'Unable to download course info page: ' + compat_str(err))
-
-            info['title'] = info['id']
-
-            links = orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
-            info['list'] = [
-                {
-                    'type': 'reference',
-                    'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
-                }
-                    for cpage in links]
-
-            results = []
-            for entry in info['list']:
-                assert entry['type'] == 'reference'
-                results += self.extract(entry['url'])
-            return results
-
-class MTVIE(InfoExtractor):
-    """Information extractor for MTV.com"""
-
-    _VALID_URL = r'^(?P<proto>https?://)?(?:www\.)?mtv\.com/videos/[^/]+/(?P<videoid>[0-9]+)/[^/]+$'
-    IE_NAME = u'mtv'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        if not mobj.group('proto'):
-            url = 'http://' + url
-        video_id = mobj.group('videoid')
-
-        webpage = self._download_webpage(url, video_id)
-
-        song_name = self._html_search_regex(r'<meta name="mtv_vt" content="([^"]+)"/>',
-            webpage, u'song name', fatal=False)
-
-        video_title = self._html_search_regex(r'<meta name="mtv_an" content="([^"]+)"/>',
-            webpage, u'title')
-
-        mtvn_uri = self._html_search_regex(r'<meta name="mtvn_uri" content="([^"]+)"/>',
-            webpage, u'mtvn_uri', fatal=False)
-
-        content_id = self._search_regex(r'MTVN.Player.defaultPlaylistId = ([0-9]+);',
-            webpage, u'content id', fatal=False)
-
-        videogen_url = 'http://www.mtv.com/player/includes/mediaGen.jhtml?uri=' + mtvn_uri + '&id=' + content_id + '&vid=' + video_id + '&ref=www.mtvn.com&viewUri=' + mtvn_uri
-        self.report_extraction(video_id)
-        request = compat_urllib_request.Request(videogen_url)
-        try:
-            metadataXml = compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to download video metadata: %s' % compat_str(err))
-
-        mdoc = xml.etree.ElementTree.fromstring(metadataXml)
-        renditions = mdoc.findall('.//rendition')
-
-        # For now, always pick the highest quality.
-        rendition = renditions[-1]
-
-        try:
-            _,_,ext = rendition.attrib['type'].partition('/')
-            format = ext + '-' + rendition.attrib['width'] + 'x' + rendition.attrib['height'] + '_' + rendition.attrib['bitrate']
-            video_url = rendition.find('./src').text
-        except KeyError:
-            raise ExtractorError('Invalid rendition field.')
-
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'uploader': performer,
-            'upload_date': None,
-            'title': video_title,
-            'ext': ext,
-            'format': format,
-        }
-
-        return [info]
-
-
-class YoukuIE(InfoExtractor):
-    _VALID_URL =  r'(?:http://)?v\.youku\.com/v_show/id_(?P<ID>[A-Za-z0-9]+)\.html'
-
-    def _gen_sid(self):
-        nowTime = int(time.time() * 1000)
-        random1 = random.randint(1000,1998)
-        random2 = random.randint(1000,9999)
-
-        return "%d%d%d" %(nowTime,random1,random2)
-
-    def _get_file_ID_mix_string(self, seed):
-        mixed = []
-        source = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\:._-1234567890")
-        seed = float(seed)
-        for i in range(len(source)):
-            seed  =  (seed * 211 + 30031 ) % 65536
-            index  =  math.floor(seed / 65536 * len(source) )
-            mixed.append(source[int(index)])
-            source.remove(source[int(index)])
-        #return ''.join(mixed)
-        return mixed
-
-    def _get_file_id(self, fileId, seed):
-        mixed = self._get_file_ID_mix_string(seed)
-        ids = fileId.split('*')
-        realId = []
-        for ch in ids:
-            if ch:
-                realId.append(mixed[int(ch)])
-        return ''.join(realId)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('ID')
-
-        info_url = 'http://v.youku.com/player/getPlayList/VideoIDS/' + video_id
-
-        jsondata = self._download_webpage(info_url, video_id)
-
-        self.report_extraction(video_id)
-        try:
-            config = json.loads(jsondata)
-
-            video_title =  config['data'][0]['title']
-            seed = config['data'][0]['seed']
-
-            format = self._downloader.params.get('format', None)
-            supported_format = list(config['data'][0]['streamfileids'].keys())
-
-            if format is None or format == 'best':
-                if 'hd2' in supported_format:
-                    format = 'hd2'
-                else:
-                    format = 'flv'
-                ext = u'flv'
-            elif format == 'worst':
-                format = 'mp4'
-                ext = u'mp4'
-            else:
-                format = 'flv'
-                ext = u'flv'
-
-
-            fileid = config['data'][0]['streamfileids'][format]
-            keys = [s['k'] for s in config['data'][0]['segs'][format]]
-        except (UnicodeDecodeError, ValueError, KeyError):
-            raise ExtractorError(u'Unable to extract info section')
-
-        files_info=[]
-        sid = self._gen_sid()
-        fileid = self._get_file_id(fileid, seed)
-
-        #column 8,9 of fileid represent the segment number
-        #fileid[7:9] should be changed
-        for index, key in enumerate(keys):
-
-            temp_fileid = '%s%02X%s' % (fileid[0:8], index, fileid[10:])
-            download_url = 'http://f.youku.com/player/getFlvPath/sid/%s_%02X/st/flv/fileid/%s?k=%s' % (sid, index, temp_fileid, key)
-
-            info = {
-                'id': '%s_part%02d' % (video_id, index),
-                'url': download_url,
-                'uploader': None,
-                'upload_date': None,
-                'title': video_title,
-                'ext': ext,
-            }
-            files_info.append(info)
-
-        return files_info
-
-
-class XNXXIE(InfoExtractor):
-    """Information extractor for xnxx.com"""
-
-    _VALID_URL = r'^(?:https?://)?video\.xnxx\.com/video([0-9]+)/(.*)'
-    IE_NAME = u'xnxx'
-    VIDEO_URL_RE = r'flv_url=(.*?)&amp;'
-    VIDEO_TITLE_RE = r'<title>(.*?)\s+-\s+XNXX.COM'
-    VIDEO_THUMB_RE = r'url_bigthumb=(.*?)&amp;'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group(1)
-
-        # Get webpage content
-        webpage = self._download_webpage(url, video_id)
-
-        video_url = self._search_regex(self.VIDEO_URL_RE,
-            webpage, u'video URL')
-        video_url = compat_urllib_parse.unquote(video_url)
-
-        video_title = self._html_search_regex(self.VIDEO_TITLE_RE,
-            webpage, u'title')
-
-        video_thumbnail = self._search_regex(self.VIDEO_THUMB_RE,
-            webpage, u'thumbnail', fatal=False)
-
-        return [{
-            'id': video_id,
-            'url': video_url,
-            'uploader': None,
-            'upload_date': None,
-            'title': video_title,
-            'ext': 'flv',
-            'thumbnail': video_thumbnail,
-            'description': None,
-        }]
-
-
-class GooglePlusIE(InfoExtractor):
-    """Information extractor for plus.google.com."""
-
-    _VALID_URL = r'(?:https://)?plus\.google\.com/(?:[^/]+/)*?posts/(\w+)'
-    IE_NAME = u'plus.google'
-
-    def _real_extract(self, url):
-        # Extract id from URL
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        post_url = mobj.group(0)
-        video_id = mobj.group(1)
-
-        video_extension = 'flv'
-
-        # Step 1, Retrieve post webpage to extract further information
-        webpage = self._download_webpage(post_url, video_id, u'Downloading entry webpage')
-
-        self.report_extraction(video_id)
-
-        # Extract update date
-        upload_date = self._html_search_regex('title="Timestamp">(.*?)</a>',
-            webpage, u'upload date', fatal=False)
-        if upload_date:
-            # Convert timestring to a format suitable for filename
-            upload_date = datetime.datetime.strptime(upload_date, "%Y-%m-%d")
-            upload_date = upload_date.strftime('%Y%m%d')
-
-        # Extract uploader
-        uploader = self._html_search_regex(r'rel\="author".*?>(.*?)</a>',
-            webpage, u'uploader', fatal=False)
-
-        # Extract title
-        # Get the first line for title
-        video_title = self._html_search_regex(r'<meta name\=\"Description\" content\=\"(.*?)[\n<"]',
-            webpage, 'title', default=u'NA')
-
-        # Step 2, Stimulate clicking the image box to launch video
-        video_page = self._search_regex('"(https\://plus\.google\.com/photos/.*?)",,"image/jpeg","video"\]',
-            webpage, u'video page URL')
-        webpage = self._download_webpage(video_page, video_id, u'Downloading video page')
-
-        # Extract video links on video page
-        """Extract video links of all sizes"""
-        pattern = '\d+,\d+,(\d+),"(http\://redirector\.googlevideo\.com.*?)"'
-        mobj = re.findall(pattern, webpage)
-        if len(mobj) == 0:
-            raise ExtractorError(u'Unable to extract video links')
-
-        # Sort in resolution
-        links = sorted(mobj)
-
-        # Choose the lowest of the sort, i.e. highest resolution
-        video_url = links[-1]
-        # Only get the url. The resolution part in the tuple has no use anymore
-        video_url = video_url[-1]
-        # Treat escaped \u0026 style hex
-        try:
-            video_url = video_url.decode("unicode_escape")
-        except AttributeError: # Python 3
-            video_url = bytes(video_url, 'ascii').decode('unicode-escape')
-
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'uploader': uploader,
-            'upload_date':  upload_date,
-            'title':    video_title,
-            'ext':      video_extension,
-        }]
-
-class NBAIE(InfoExtractor):
-    _VALID_URL = r'^(?:https?://)?(?:watch\.|www\.)?nba\.com/(?:nba/)?video(/[^?]*?)(?:/index\.html)?(?:\?.*)?$'
-    IE_NAME = u'nba'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_id = mobj.group(1)
-
-        webpage = self._download_webpage(url, video_id)
-
-        video_url = u'http://ht-mobile.cdn.turner.com/nba/big' + video_id + '_nba_1280x720.mp4'
-
-        shortened_video_id = video_id.rpartition('/')[2]
-        title = self._html_search_regex(r'<meta property="og:title" content="(.*?)"',
-            webpage, 'title', default=shortened_video_id).replace('NBA.com: ', '')
-
-        # It isn't there in the HTML it returns to us
-        # uploader_date = self._html_search_regex(r'<b>Date:</b> (.*?)</div>', webpage, 'upload_date', fatal=False)
-
-        description = self._html_search_regex(r'<meta name="description" (?:content|value)="(.*?)" />', webpage, 'description', fatal=False)
-
-        info = {
-            'id': shortened_video_id,
-            'url': video_url,
-            'ext': 'mp4',
-            'title': title,
-            # 'uploader_date': uploader_date,
-            'description': description,
-        }
-        return [info]
-
-class JustinTVIE(InfoExtractor):
-    """Information extractor for justin.tv and twitch.tv"""
-    # TODO: One broadcast may be split into multiple videos. The key
-    # 'broadcast_id' is the same for all parts, and 'broadcast_part'
-    # starts at 1 and increases. Can we treat all parts as one video?
-
-    _VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?(?:twitch|justin)\.tv/
-        (?:
-            (?P<channelid>[^/]+)|
-            (?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
-            (?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
-        )
-        /?(?:\#.*)?$
-        """
-    _JUSTIN_PAGE_LIMIT = 100
-    IE_NAME = u'justin.tv'
-
-    def report_download_page(self, channel, offset):
-        """Report attempt to download a single page of videos."""
-        self.to_screen(u'%s: Downloading video information from %d to %d' %
-                (channel, offset, offset + self._JUSTIN_PAGE_LIMIT))
-
-    # Return count of items, list of *valid* items
-    def _parse_page(self, url, video_id):
-        webpage = self._download_webpage(url, video_id,
-                                         u'Downloading video info JSON',
-                                         u'unable to download video info JSON')
-
-        response = json.loads(webpage)
-        if type(response) != list:
-            error_text = response.get('error', 'unknown error')
-            raise ExtractorError(u'Justin.tv API: %s' % error_text)
-        info = []
-        for clip in response:
-            video_url = clip['video_file_url']
-            if video_url:
-                video_extension = os.path.splitext(video_url)[1][1:]
-                video_date = re.sub('-', '', clip['start_time'][:10])
-                video_uploader_id = clip.get('user_id', clip.get('channel_id'))
-                video_id = clip['id']
-                video_title = clip.get('title', video_id)
-                info.append({
-                    'id': video_id,
-                    'url': video_url,
-                    'title': video_title,
-                    'uploader': clip.get('channel_name', video_uploader_id),
-                    'uploader_id': video_uploader_id,
-                    'upload_date': video_date,
-                    'ext': video_extension,
-                })
-        return (len(response), info)
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'invalid URL: %s' % url)
-
-        api_base = 'http://api.justin.tv'
-        paged = False
-        if mobj.group('channelid'):
-            paged = True
-            video_id = mobj.group('channelid')
-            api = api_base + '/channel/archives/%s.json' % video_id
-        elif mobj.group('chapterid'):
-            chapter_id = mobj.group('chapterid')
-
-            webpage = self._download_webpage(url, chapter_id)
-            m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
-            if not m:
-                raise ExtractorError(u'Cannot find archive of a chapter')
-            archive_id = m.group(1)
-
-            api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
-            chapter_info_xml = self._download_webpage(api, chapter_id,
-                                             note=u'Downloading chapter information',
-                                             errnote=u'Chapter information download failed')
-            doc = xml.etree.ElementTree.fromstring(chapter_info_xml)
-            for a in doc.findall('.//archive'):
-                if archive_id == a.find('./id').text:
-                    break
-            else:
-                raise ExtractorError(u'Could not find chapter in chapter information')
-
-            video_url = a.find('./video_file_url').text
-            video_ext = video_url.rpartition('.')[2] or u'flv'
-
-            chapter_api_url = u'https://api.twitch.tv/kraken/videos/c' + chapter_id
-            chapter_info_json = self._download_webpage(chapter_api_url, u'c' + chapter_id,
-                                   note='Downloading chapter metadata',
-                                   errnote='Download of chapter metadata failed')
-            chapter_info = json.loads(chapter_info_json)
-
-            bracket_start = int(doc.find('.//bracket_start').text)
-            bracket_end = int(doc.find('.//bracket_end').text)
-
-            # TODO determine start (and probably fix up file)
-            #  youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
-            #video_url += u'?start=' + TODO:start_timestamp
-            # bracket_start is 13290, but we want 51670615
-            self._downloader.report_warning(u'Chapter detected, but we can just download the whole file. '
-                                            u'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
-
-            info = {
-                'id': u'c' + chapter_id,
-                'url': video_url,
-                'ext': video_ext,
-                'title': chapter_info['title'],
-                'thumbnail': chapter_info['preview'],
-                'description': chapter_info['description'],
-                'uploader': chapter_info['channel']['display_name'],
-                'uploader_id': chapter_info['channel']['name'],
-            }
-            return [info]
-        else:
-            video_id = mobj.group('videoid')
-            api = api_base + '/broadcast/by_archive/%s.json' % video_id
-
-        self.report_extraction(video_id)
-
-        info = []
-        offset = 0
-        limit = self._JUSTIN_PAGE_LIMIT
-        while True:
-            if paged:
-                self.report_download_page(video_id, offset)
-            page_url = api + ('?offset=%d&limit=%d' % (offset, limit))
-            page_count, page_info = self._parse_page(page_url, video_id)
-            info.extend(page_info)
-            if not paged or page_count != limit:
-                break
-            offset += limit
-        return info
-
-class FunnyOrDieIE(InfoExtractor):
-    _VALID_URL = r'^(?:https?://)?(?:www\.)?funnyordie\.com/videos/(?P<id>[0-9a-f]+)/.*$'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'invalid URL: %s' % url)
-
-        video_id = mobj.group('id')
-        webpage = self._download_webpage(url, video_id)
-
-        video_url = self._html_search_regex(r'<video[^>]*>\s*<source[^>]*>\s*<source src="(?P<url>[^"]+)"',
-            webpage, u'video URL', flags=re.DOTALL)
-
-        title = self._html_search_regex((r"<h1 class='player_page_h1'.*?>(?P<title>.*?)</h1>",
-            r'<title>(?P<title>[^<]+?)</title>'), webpage, 'title', flags=re.DOTALL)
-
-        video_description = self._html_search_regex(r'<meta property="og:description" content="(?P<desc>.*?)"',
-            webpage, u'description', fatal=False, flags=re.DOTALL)
-
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'ext': 'mp4',
-            'title': title,
-            'description': video_description,
-        }
-        return [info]
-
-class SteamIE(InfoExtractor):
-    _VALID_URL = r"""http://store\.steampowered\.com/
-                (agecheck/)?
-                (?P<urltype>video|app)/ #If the page is only for videos or for a game
-                (?P<gameID>\d+)/?
-                (?P<videoID>\d*)(?P<extra>\??) #For urltype == video we sometimes get the videoID
-                """
-    _VIDEO_PAGE_TEMPLATE = 'http://store.steampowered.com/video/%s/'
-    _AGECHECK_TEMPLATE = 'http://store.steampowered.com/agecheck/video/%s/?snr=1_agecheck_agecheck__age-gate&ageDay=1&ageMonth=January&ageYear=1970'
-
-    @classmethod
-    def suitable(cls, url):
-        """Receives a URL and returns True if suitable for this IE."""
-        return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url, re.VERBOSE)
-        gameID = m.group('gameID')
-
-        videourl = self._VIDEO_PAGE_TEMPLATE % gameID
-        webpage = self._download_webpage(videourl, gameID)
-
-        if re.search('<h2>Please enter your birth date to continue:</h2>', webpage) is not None:
-            videourl = self._AGECHECK_TEMPLATE % gameID
-            self.report_age_confirmation()
-            webpage = self._download_webpage(videourl, gameID)
-
-        self.report_extraction(gameID)
-        game_title = self._html_search_regex(r'<h2 class="pageheader">(.*?)</h2>',
-                                             webpage, 'game title')
-
-        urlRE = r"'movie_(?P<videoID>\d+)': \{\s*FILENAME: \"(?P<videoURL>[\w:/\.\?=]+)\"(,\s*MOVIE_NAME: \"(?P<videoName>[\w:/\.\?=\+-]+)\")?\s*\},"
-        mweb = re.finditer(urlRE, webpage)
-        namesRE = r'<span class="title">(?P<videoName>.+?)</span>'
-        titles = re.finditer(namesRE, webpage)
-        thumbsRE = r'<img class="movie_thumb" src="(?P<thumbnail>.+?)">'
-        thumbs = re.finditer(thumbsRE, webpage)
-        videos = []
-        for vid,vtitle,thumb in zip(mweb,titles,thumbs):
-            video_id = vid.group('videoID')
-            title = vtitle.group('videoName')
-            video_url = vid.group('videoURL')
-            video_thumb = thumb.group('thumbnail')
-            if not video_url:
-                raise ExtractorError(u'Cannot find video url for %s' % video_id)
-            info = {
-                'id':video_id,
-                'url':video_url,
-                'ext': 'flv',
-                'title': unescapeHTML(title),
-                'thumbnail': video_thumb
-                  }
-            videos.append(info)
-        return [self.playlist_result(videos, gameID, game_title)]
-
-class UstreamIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.ustream\.tv/recorded/(?P<videoID>\d+)'
-    IE_NAME = u'ustream'
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url)
-        video_id = m.group('videoID')
-
-        video_url = u'http://tcdn.ustream.tv/video/%s' % video_id
-        webpage = self._download_webpage(url, video_id)
-
-        self.report_extraction(video_id)
-
-        video_title = self._html_search_regex(r'data-title="(?P<title>.+)"',
-            webpage, u'title')
-
-        uploader = self._html_search_regex(r'data-content-type="channel".*?>(?P<uploader>.*?)</a>',
-            webpage, u'uploader', fatal=False, flags=re.DOTALL)
-
-        thumbnail = self._html_search_regex(r'<link rel="image_src" href="(?P<thumb>.*?)"',
-            webpage, u'thumbnail', fatal=False)
-
-        info = {
-                'id': video_id,
-                'url': video_url,
-                'ext': 'flv',
-                'title': video_title,
-                'uploader': uploader,
-                'thumbnail': thumbnail,
-               }
-        return info
-
-class WorldStarHipHopIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www|m)\.worldstar(?:candy|hiphop)\.com/videos/video\.php\?v=(?P<id>.*)'
-    IE_NAME = u'WorldStarHipHop'
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url)
-        video_id = m.group('id')
-
-        webpage_src = self._download_webpage(url, video_id)
-
-        video_url = self._search_regex(r'so\.addVariable\("file","(.*?)"\)',
-            webpage_src, u'video URL')
-
-        if 'mp4' in video_url:
-            ext = 'mp4'
-        else:
-            ext = 'flv'
-
-        video_title = self._html_search_regex(r"<title>(.*)</title>",
-            webpage_src, u'title')
-
-        # Getting thumbnail and if not thumbnail sets correct title for WSHH candy video.
-        thumbnail = self._html_search_regex(r'rel="image_src" href="(.*)" />',
-            webpage_src, u'thumbnail', fatal=False)
-
-        if not thumbnail:
-            _title = r"""candytitles.*>(.*)</span>"""
-            mobj = re.search(_title, webpage_src)
-            if mobj is not None:
-                video_title = mobj.group(1)
-
-        results = [{
-                    'id': video_id,
-                    'url' : video_url,
-                    'title' : video_title,
-                    'thumbnail' : thumbnail,
-                    'ext' : ext,
-                    }]
-        return results
-
-class RBMARadioIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?rbmaradio\.com/shows/(?P<videoID>[^/]+)$'
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url)
-        video_id = m.group('videoID')
-
-        webpage = self._download_webpage(url, video_id)
-
-        json_data = self._search_regex(r'window\.gon.*?gon\.show=(.+?);$',
-            webpage, u'json data', flags=re.MULTILINE)
-
-        try:
-            data = json.loads(json_data)
-        except ValueError as e:
-            raise ExtractorError(u'Invalid JSON: ' + str(e))
-
-        video_url = data['akamai_url'] + '&cbr=256'
-        url_parts = compat_urllib_parse_urlparse(video_url)
-        video_ext = url_parts.path.rpartition('.')[2]
-        info = {
-                'id': video_id,
-                'url': video_url,
-                'ext': video_ext,
-                'title': data['title'],
-                'description': data.get('teaser_text'),
-                'location': data.get('country_of_origin'),
-                'uploader': data.get('host', {}).get('name'),
-                'uploader_id': data.get('host', {}).get('slug'),
-                'thumbnail': data.get('image', {}).get('large_url_2x'),
-                'duration': data.get('duration'),
-        }
-        return [info]
-
-
-class YouPornIE(InfoExtractor):
-    """Information extractor for youporn.com."""
-    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?youporn\.com/watch/(?P<videoid>[0-9]+)/(?P<title>[^/]+)'
-
-    def _print_formats(self, formats):
-        """Print all available formats"""
-        print(u'Available formats:')
-        print(u'ext\t\tformat')
-        print(u'---------------------------------')
-        for format in formats:
-            print(u'%s\t\t%s'  % (format['ext'], format['format']))
-
-    def _specific(self, req_format, formats):
-        for x in formats:
-            if(x["format"]==req_format):
-                return x
-        return None
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('videoid')
-
-        req = compat_urllib_request.Request(url)
-        req.add_header('Cookie', 'age_verified=1')
-        webpage = self._download_webpage(req, video_id)
-
-        # Get JSON parameters
-        json_params = self._search_regex(r'var currentVideo = new Video\((.*)\);', webpage, u'JSON parameters')
-        try:
-            params = json.loads(json_params)
-        except:
-            raise ExtractorError(u'Invalid JSON')
-
-        self.report_extraction(video_id)
-        try:
-            video_title = params['title']
-            upload_date = unified_strdate(params['release_date_f'])
-            video_description = params['description']
-            video_uploader = params['submitted_by']
-            thumbnail = params['thumbnails'][0]['image']
-        except KeyError:
-            raise ExtractorError('Missing JSON parameter: ' + sys.exc_info()[1])
-
-        # Get all of the formats available
-        DOWNLOAD_LIST_RE = r'(?s)<ul class="downloadList">(?P<download_list>.*?)</ul>'
-        download_list_html = self._search_regex(DOWNLOAD_LIST_RE,
-            webpage, u'download list').strip()
-
-        # Get all of the links from the page
-        LINK_RE = r'(?s)<a href="(?P<url>[^"]+)">'
-        links = re.findall(LINK_RE, download_list_html)
-        if(len(links) == 0):
-            raise ExtractorError(u'ERROR: no known formats available for video')
-
-        self.to_screen(u'Links found: %d' % len(links))
-
-        formats = []
-        for link in links:
-
-            # A link looks like this:
-            # http://cdn1.download.youporn.phncdn.com/201210/31/8004515/480p_370k_8004515/YouPorn%20-%20Nubile%20Films%20The%20Pillow%20Fight.mp4?nvb=20121113051249&nva=20121114051249&ir=1200&sr=1200&hash=014b882080310e95fb6a0
-            # A path looks like this:
-            # /201210/31/8004515/480p_370k_8004515/YouPorn%20-%20Nubile%20Films%20The%20Pillow%20Fight.mp4
-            video_url = unescapeHTML( link )
-            path = compat_urllib_parse_urlparse( video_url ).path
-            extension = os.path.splitext( path )[1][1:]
-            format = path.split('/')[4].split('_')[:2]
-            size = format[0]
-            bitrate = format[1]
-            format = "-".join( format )
-            # title = u'%s-%s-%s' % (video_title, size, bitrate)
-
-            formats.append({
-                'id': video_id,
-                'url': video_url,
-                'uploader': video_uploader,
-                'upload_date': upload_date,
-                'title': video_title,
-                'ext': extension,
-                'format': format,
-                'thumbnail': thumbnail,
-                'description': video_description
-            })
-
-        if self._downloader.params.get('listformats', None):
-            self._print_formats(formats)
-            return
-
-        req_format = self._downloader.params.get('format', None)
-        self.to_screen(u'Format: %s' % req_format)
-
-        if req_format is None or req_format == 'best':
-            return [formats[0]]
-        elif req_format == 'worst':
-            return [formats[-1]]
-        elif req_format in ('-1', 'all'):
-            return formats
-        else:
-            format = self._specific( req_format, formats )
-            if result is None:
-                raise ExtractorError(u'Requested format not available')
-            return [format]
-
-
-
-class PornotubeIE(InfoExtractor):
-    """Information extractor for pornotube.com."""
-    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?pornotube\.com(/c/(?P<channel>[0-9]+))?(/m/(?P<videoid>[0-9]+))(/(?P<title>.+))$'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_id = mobj.group('videoid')
-        video_title = mobj.group('title')
-
-        # Get webpage content
-        webpage = self._download_webpage(url, video_id)
-
-        # Get the video URL
-        VIDEO_URL_RE = r'url: "(?P<url>http://video[0-9].pornotube.com/.+\.flv)",'
-        video_url = self._search_regex(VIDEO_URL_RE, webpage, u'video url')
-        video_url = compat_urllib_parse.unquote(video_url)
-
-        #Get the uploaded date
-        VIDEO_UPLOADED_RE = r'<div class="video_added_by">Added (?P<date>[0-9\/]+) by'
-        upload_date = self._html_search_regex(VIDEO_UPLOADED_RE, webpage, u'upload date', fatal=False)
-        if upload_date: upload_date = unified_strdate(upload_date)
-
-        info = {'id': video_id,
-                'url': video_url,
-                'uploader': None,
-                'upload_date': upload_date,
-                'title': video_title,
-                'ext': 'flv',
-                'format': 'flv'}
-
-        return [info]
-
-class YouJizzIE(InfoExtractor):
-    """Information extractor for youjizz.com."""
-    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?youjizz\.com/videos/(?P<videoid>[^.]+).html$'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_id = mobj.group('videoid')
-
-        # Get webpage content
-        webpage = self._download_webpage(url, video_id)
-
-        # Get the video title
-        video_title = self._html_search_regex(r'<title>(?P<title>.*)</title>',
-            webpage, u'title').strip()
-
-        # Get the embed page
-        result = re.search(r'https?://www.youjizz.com/videos/embed/(?P<videoid>[0-9]+)', webpage)
-        if result is None:
-            raise ExtractorError(u'ERROR: unable to extract embed page')
-
-        embed_page_url = result.group(0).strip()
-        video_id = result.group('videoid')
-
-        webpage = self._download_webpage(embed_page_url, video_id)
-
-        # Get the video URL
-        video_url = self._search_regex(r'so.addVariable\("file",encodeURIComponent\("(?P<source>[^"]+)"\)\);',
-            webpage, u'video URL')
-
-        info = {'id': video_id,
-                'url': video_url,
-                'title': video_title,
-                'ext': 'flv',
-                'format': 'flv',
-                'player_url': embed_page_url}
-
-        return [info]
-
-class EightTracksIE(InfoExtractor):
-    IE_NAME = '8tracks'
-    _VALID_URL = r'https?://8tracks.com/(?P<user>[^/]+)/(?P<id>[^/#]+)(?:#.*)?$'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        playlist_id = mobj.group('id')
-
-        webpage = self._download_webpage(url, playlist_id)
-
-        json_like = self._search_regex(r"PAGE.mix = (.*?);\n", webpage, u'trax information', flags=re.DOTALL)
-        data = json.loads(json_like)
-
-        session = str(random.randint(0, 1000000000))
-        mix_id = data['id']
-        track_count = data['tracks_count']
-        first_url = 'http://8tracks.com/sets/%s/play?player=sm&mix_id=%s&format=jsonh' % (session, mix_id)
-        next_url = first_url
-        res = []
-        for i in itertools.count():
-            api_json = self._download_webpage(next_url, playlist_id,
-                note=u'Downloading song information %s/%s' % (str(i+1), track_count),
-                errnote=u'Failed to download song information')
-            api_data = json.loads(api_json)
-            track_data = api_data[u'set']['track']
-            info = {
-                'id': track_data['id'],
-                'url': track_data['track_file_stream_url'],
-                'title': track_data['performer'] + u' - ' + track_data['name'],
-                'raw_title': track_data['name'],
-                'uploader_id': data['user']['login'],
-                'ext': 'm4a',
-            }
-            res.append(info)
-            if api_data['set']['at_last_track']:
-                break
-            next_url = 'http://8tracks.com/sets/%s/next?player=sm&mix_id=%s&format=jsonh&track_id=%s' % (session, mix_id, track_data['id'])
-        return res
-
-class KeekIE(InfoExtractor):
-    _VALID_URL = r'http://(?:www\.)?keek\.com/(?:!|\w+/keeks/)(?P<videoID>\w+)'
-    IE_NAME = u'keek'
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url)
-        video_id = m.group('videoID')
-
-        video_url = u'http://cdn.keek.com/keek/video/%s' % video_id
-        thumbnail = u'http://cdn.keek.com/keek/thumbnail/%s/w100/h75' % video_id
-        webpage = self._download_webpage(url, video_id)
-
-        video_title = self._html_search_regex(r'<meta property="og:title" content="(?P<title>.*?)"',
-            webpage, u'title')
-
-        uploader = self._html_search_regex(r'<div class="user-name-and-bio">[\S\s]+?<h2>(?P<uploader>.+?)</h2>',
-            webpage, u'uploader', fatal=False)
-
-        info = {
-                'id': video_id,
-                'url': video_url,
-                'ext': 'mp4',
-                'title': video_title,
-                'thumbnail': thumbnail,
-                'uploader': uploader
-        }
-        return [info]
-
-class TEDIE(InfoExtractor):
-    _VALID_URL=r'''http://www\.ted\.com/
-                   (
-                        ((?P<type_playlist>playlists)/(?P<playlist_id>\d+)) # We have a playlist
-                        |
-                        ((?P<type_talk>talks)) # We have a simple talk
-                   )
-                   (/lang/(.*?))? # The url may contain the language
-                   /(?P<name>\w+) # Here goes the name and then ".html"
-                   '''
-
-    @classmethod
-    def suitable(cls, url):
-        """Receives a URL and returns True if suitable for this IE."""
-        return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
-
-    def _real_extract(self, url):
-        m=re.match(self._VALID_URL, url, re.VERBOSE)
-        if m.group('type_talk'):
-            return [self._talk_info(url)]
-        else :
-            playlist_id=m.group('playlist_id')
-            name=m.group('name')
-            self.to_screen(u'Getting info of playlist %s: "%s"' % (playlist_id,name))
-            return [self._playlist_videos_info(url,name,playlist_id)]
-
-    def _playlist_videos_info(self,url,name,playlist_id=0):
-        '''Returns the videos of the playlist'''
-        video_RE=r'''
-                     <li\ id="talk_(\d+)"([.\s]*?)data-id="(?P<video_id>\d+)"
-                     ([.\s]*?)data-playlist_item_id="(\d+)"
-                     ([.\s]*?)data-mediaslug="(?P<mediaSlug>.+?)"
-                     '''
-        video_name_RE=r'<p\ class="talk-title"><a href="(?P<talk_url>/talks/(.+).html)">(?P<fullname>.+?)</a></p>'
-        webpage=self._download_webpage(url, playlist_id, 'Downloading playlist webpage')
-        m_videos=re.finditer(video_RE,webpage,re.VERBOSE)
-        m_names=re.finditer(video_name_RE,webpage)
-
-        playlist_title = self._html_search_regex(r'div class="headline">\s*?<h1>\s*?<span>(.*?)</span>',
-                                                 webpage, 'playlist title')
-
-        playlist_entries = []
-        for m_video, m_name in zip(m_videos,m_names):
-            video_id=m_video.group('video_id')
-            talk_url='http://www.ted.com%s' % m_name.group('talk_url')
-            playlist_entries.append(self.url_result(talk_url, 'TED'))
-        return self.playlist_result(playlist_entries, playlist_id = playlist_id, playlist_title = playlist_title)
-
-    def _talk_info(self, url, video_id=0):
-        """Return the video for the talk in the url"""
-        m = re.match(self._VALID_URL, url,re.VERBOSE)
-        video_name = m.group('name')
-        webpage = self._download_webpage(url, video_id, 'Downloading \"%s\" page' % video_name)
-        self.report_extraction(video_name)
-        # If the url includes the language we get the title translated
-        title = self._html_search_regex(r'<span id="altHeadline" >(?P<title>.*)</span>',
-                                        webpage, 'title')
-        json_data = self._search_regex(r'<script.*?>var talkDetails = ({.*?})</script>',
-                                    webpage, 'json data')
-        info = json.loads(json_data)
-        desc = self._html_search_regex(r'<div class="talk-intro">.*?<p.*?>(.*?)</p>',
-                                       webpage, 'description', flags = re.DOTALL)
-        
-        thumbnail = self._search_regex(r'</span>[\s.]*</div>[\s.]*<img src="(.*?)"',
-                                       webpage, 'thumbnail')
-        info = {
-                'id': info['id'],
-                'url': info['htmlStreams'][-1]['file'],
-                'ext': 'mp4',
-                'title': title,
-                'thumbnail': thumbnail,
-                'description': desc,
-                }
-        return info
-
-class MySpassIE(InfoExtractor):
-    _VALID_URL = r'http://www.myspass.de/.*'
-
-    def _real_extract(self, url):
-        META_DATA_URL_TEMPLATE = 'http://www.myspass.de/myspass/includes/apps/video/getvideometadataxml.php?id=%s'
-
-        # video id is the last path element of the URL
-        # usually there is a trailing slash, so also try the second but last
-        url_path = compat_urllib_parse_urlparse(url).path
-        url_parent_path, video_id = os.path.split(url_path)
-        if not video_id:
-            _, video_id = os.path.split(url_parent_path)
-
-        # get metadata
-        metadata_url = META_DATA_URL_TEMPLATE % video_id
-        metadata_text = self._download_webpage(metadata_url, video_id)
-        metadata = xml.etree.ElementTree.fromstring(metadata_text.encode('utf-8'))
-
-        # extract values from metadata
-        url_flv_el = metadata.find('url_flv')
-        if url_flv_el is None:
-            raise ExtractorError(u'Unable to extract download url')
-        video_url = url_flv_el.text
-        extension = os.path.splitext(video_url)[1][1:]
-        title_el = metadata.find('title')
-        if title_el is None:
-            raise ExtractorError(u'Unable to extract title')
-        title = title_el.text
-        format_id_el = metadata.find('format_id')
-        if format_id_el is None:
-            format = ext
-        else:
-            format = format_id_el.text
-        description_el = metadata.find('description')
-        if description_el is not None:
-            description = description_el.text
-        else:
-            description = None
-        imagePreview_el = metadata.find('imagePreview')
-        if imagePreview_el is not None:
-            thumbnail = imagePreview_el.text
-        else:
-            thumbnail = None
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'title': title,
-            'ext': extension,
-            'format': format,
-            'thumbnail': thumbnail,
-            'description': description
-        }
-        return [info]
-
-class SpiegelIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?spiegel\.de/video/[^/]*-(?P<videoID>[0-9]+)(?:\.html)?(?:#.*)?$'
-
-    def _real_extract(self, url):
-        m = re.match(self._VALID_URL, url)
-        video_id = m.group('videoID')
-
-        webpage = self._download_webpage(url, video_id)
-
-        video_title = self._html_search_regex(r'<div class="module-title">(.*?)</div>',
-            webpage, u'title')
-
-        xml_url = u'http://video2.spiegel.de/flash/' + video_id + u'.xml'
-        xml_code = self._download_webpage(xml_url, video_id,
-                    note=u'Downloading XML', errnote=u'Failed to download XML')
-
-        idoc = xml.etree.ElementTree.fromstring(xml_code)
-        last_type = idoc[-1]
-        filename = last_type.findall('./filename')[0].text
-        duration = float(last_type.findall('./duration')[0].text)
-
-        video_url = 'http://video2.spiegel.de/flash/' + filename
-        video_ext = filename.rpartition('.')[2]
-        info = {
-            'id': video_id,
-            'url': video_url,
-            'ext': video_ext,
-            'title': video_title,
-            'duration': duration,
-        }
-        return [info]
-
-class LiveLeakIE(InfoExtractor):
-
-    _VALID_URL = r'^(?:http?://)?(?:\w+\.)?liveleak\.com/view\?(?:.*?)i=(?P<video_id>[\w_]+)(?:.*)'
-    IE_NAME = u'liveleak'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_id = mobj.group('video_id')
-
-        webpage = self._download_webpage(url, video_id)
-
-        video_url = self._search_regex(r'file: "(.*?)",',
-            webpage, u'video URL')
-
-        video_title = self._html_search_regex(r'<meta property="og:title" content="(?P<title>.*?)"',
-            webpage, u'title').replace('LiveLeak.com -', '').strip()
-
-        video_description = self._html_search_regex(r'<meta property="og:description" content="(?P<desc>.*?)"',
-            webpage, u'description', fatal=False)
-
-        video_uploader = self._html_search_regex(r'By:.*?(\w+)</a>',
-            webpage, u'uploader', fatal=False)
-
-        info = {
-            'id':  video_id,
-            'url': video_url,
-            'ext': 'mp4',
-            'title': video_title,
-            'description': video_description,
-            'uploader': video_uploader
-        }
-
-        return [info]
-
-class ARDIE(InfoExtractor):
-    _VALID_URL = r'^(?:https?://)?(?:(?:www\.)?ardmediathek\.de|mediathek\.daserste\.de)/(?:.*/)(?P<video_id>[^/\?]+)(?:\?.*)?'
-    _TITLE = r'<h1(?: class="boxTopHeadline")?>(?P<title>.*)</h1>'
-    _MEDIA_STREAM = r'mediaCollection\.addMediaStream\((?P<media_type>\d+), (?P<quality>\d+), "(?P<rtmp_url>[^"]*)", "(?P<video_url>[^"]*)", "[^"]*"\)'
-
-    def _real_extract(self, url):
-        # determine video id from url
-        m = re.match(self._VALID_URL, url)
-
-        numid = re.search(r'documentId=([0-9]+)', url)
-        if numid:
-            video_id = numid.group(1)
-        else:
-            video_id = m.group('video_id')
-
-        # determine title and media streams from webpage
-        html = self._download_webpage(url, video_id)
-        title = re.search(self._TITLE, html).group('title')
-        streams = [m.groupdict() for m in re.finditer(self._MEDIA_STREAM, html)]
-        if not streams:
-            assert '"fsk"' in html
-            raise ExtractorError(u'This video is only available after 8:00 pm')
-
-        # choose default media type and highest quality for now
-        stream = max([s for s in streams if int(s["media_type"]) == 0],
-                     key=lambda s: int(s["quality"]))
-
-        # there's two possibilities: RTMP stream or HTTP download
-        info = {'id': video_id, 'title': title, 'ext': 'mp4'}
-        if stream['rtmp_url']:
-            self.to_screen(u'RTMP download detected')
-            assert stream['video_url'].startswith('mp4:')
-            info["url"] = stream["rtmp_url"]
-            info["play_path"] = stream['video_url']
-        else:
-            assert stream["video_url"].endswith('.mp4')
-            info["url"] = stream["video_url"]
-        return [info]
-
-class ZDFIE(InfoExtractor):
-    _VALID_URL = r'^http://www\.zdf\.de\/ZDFmediathek\/(.*beitrag\/video\/)(?P<video_id>[^/\?]+)(?:\?.*)?'
-    _TITLE = r'<h1(?: class="beitragHeadline")?>(?P<title>.*)</h1>'
-    _MEDIA_STREAM = r'<a href="(?P<video_url>.+(?P<media_type>.streaming).+/zdf/(?P<quality>[^\/]+)/[^"]*)".+class="play".+>'
-    _MMS_STREAM = r'href="(?P<video_url>mms://[^"]*)"'
-    _RTSP_STREAM = r'(?P<video_url>rtsp://[^"]*.mp4)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('video_id')
-
-        html = self._download_webpage(url, video_id)
-        streams = [m.groupdict() for m in re.finditer(self._MEDIA_STREAM, html)]
-        if streams is None:
-            raise ExtractorError(u'No media url found.')
-
-        # s['media_type'] == 'wstreaming' -> use 'Windows Media Player' and mms url
-        # s['media_type'] == 'hstreaming' -> use 'Quicktime' and rtsp url
-        # choose first/default media type and highest quality for now
-        for s in streams:        #find 300 - dsl1000mbit
-            if s['quality'] == '300' and s['media_type'] == 'wstreaming':
-                stream_=s
-                break
-        for s in streams:        #find veryhigh - dsl2000mbit
-            if s['quality'] == 'veryhigh' and s['media_type'] == 'wstreaming': # 'hstreaming' - rtsp is not working
-                stream_=s
-                break
-        if stream_ is None:
-            raise ExtractorError(u'No stream found.')
-
-        media_link = self._download_webpage(stream_['video_url'], video_id,'Get stream URL')
-
-        self.report_extraction(video_id)
-        mobj = re.search(self._TITLE, html)
-        if mobj is None:
-            raise ExtractorError(u'Cannot extract title')
-        title = unescapeHTML(mobj.group('title'))
-
-        mobj = re.search(self._MMS_STREAM, media_link)
-        if mobj is None:
-            mobj = re.search(self._RTSP_STREAM, media_link)
-            if mobj is None:
-                raise ExtractorError(u'Cannot extract mms:// or rtsp:// URL')
-        mms_url = mobj.group('video_url')
-
-        mobj = re.search('(.*)[.](?P<ext>[^.]+)', mms_url)
-        if mobj is None:
-            raise ExtractorError(u'Cannot extract extention')
-        ext = mobj.group('ext')
-
-        return [{'id': video_id,
-                 'url': mms_url,
-                 'title': title,
-                 'ext': ext
-                 }]
-
-class TumblrIE(InfoExtractor):
-    _VALID_URL = r'http://(?P<blog_name>.*?)\.tumblr\.com/((post)|(video))/(?P<id>\d*)/(.*?)'
-
-    def _real_extract(self, url):
-        m_url = re.match(self._VALID_URL, url)
-        video_id = m_url.group('id')
-        blog = m_url.group('blog_name')
-
-        url = 'http://%s.tumblr.com/post/%s/' % (blog, video_id)
-        webpage = self._download_webpage(url, video_id)
-
-        re_video = r'src=\\x22(?P<video_url>http://%s\.tumblr\.com/video_file/%s/(.*?))\\x22 type=\\x22video/(?P<ext>.*?)\\x22' % (blog, video_id)
-        video = re.search(re_video, webpage)
-        if video is None:
-           raise ExtractorError(u'Unable to extract video')
-        video_url = video.group('video_url')
-        ext = video.group('ext')
-
-        video_thumbnail = self._search_regex(r'posters(.*?)\[\\x22(?P<thumb>.*?)\\x22',
-            webpage, u'thumbnail', fatal=False)  # We pick the first poster
-        if video_thumbnail: video_thumbnail = video_thumbnail.replace('\\', '')
-
-        # The only place where you can get a title, it's not complete,
-        # but searching in other places doesn't work for all videos
-        video_title = self._html_search_regex(r'<title>(?P<title>.*?)</title>',
-            webpage, u'title', flags=re.DOTALL)
-
-        return [{'id': video_id,
-                 'url': video_url,
-                 'title': video_title,
-                 'thumbnail': video_thumbnail,
-                 'ext': ext
-                 }]
-
-class BandcampIE(InfoExtractor):
-    _VALID_URL = r'http://.*?\.bandcamp\.com/track/(?P<title>.*)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        title = mobj.group('title')
-        webpage = self._download_webpage(url, title)
-        # We get the link to the free download page
-        m_download = re.search(r'freeDownloadPage: "(.*?)"', webpage)
-        if m_download is None:
-            raise ExtractorError(u'No free songs found')
-
-        download_link = m_download.group(1)
-        id = re.search(r'var TralbumData = {(.*?)id: (?P<id>\d*?)$', 
-                       webpage, re.MULTILINE|re.DOTALL).group('id')
-
-        download_webpage = self._download_webpage(download_link, id,
-                                                  'Downloading free downloads page')
-        # We get the dictionary of the track from some javascrip code
-        info = re.search(r'items: (.*?),$',
-                         download_webpage, re.MULTILINE).group(1)
-        info = json.loads(info)[0]
-        # We pick mp3-320 for now, until format selection can be easily implemented.
-        mp3_info = info[u'downloads'][u'mp3-320']
-        # If we try to use this url it says the link has expired
-        initial_url = mp3_info[u'url']
-        re_url = r'(?P<server>http://(.*?)\.bandcamp\.com)/download/track\?enc=mp3-320&fsig=(?P<fsig>.*?)&id=(?P<id>.*?)&ts=(?P<ts>.*)$'
-        m_url = re.match(re_url, initial_url)
-        #We build the url we will use to get the final track url
-        # This url is build in Bandcamp in the script download_bunde_*.js
-        request_url = '%s/statdownload/track?enc=mp3-320&fsig=%s&id=%s&ts=%s&.rand=665028774616&.vrs=1' % (m_url.group('server'), m_url.group('fsig'), id, m_url.group('ts'))
-        final_url_webpage = self._download_webpage(request_url, id, 'Requesting download url')
-        # If we could correctly generate the .rand field the url would be
-        #in the "download_url" key
-        final_url = re.search(r'"retry_url":"(.*?)"', final_url_webpage).group(1)
-
-        track_info = {'id':id,
-                      'title' : info[u'title'],
-                      'ext' :   'mp3',
-                      'url' :   final_url,
-                      'thumbnail' : info[u'thumb_url'],
-                      'uploader' :  info[u'artist']
-                      }
-
-        return [track_info]
-
-class RedTubeIE(InfoExtractor):
-    """Information Extractor for redtube"""
-    _VALID_URL = r'(?:http://)?(?:www\.)?redtube\.com/(?P<id>[0-9]+)'
-
-    def _real_extract(self,url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
-        video_id = mobj.group('id')
-        video_extension = 'mp4'        
-        webpage = self._download_webpage(url, video_id)
-
-        self.report_extraction(video_id)
-
-        video_url = self._html_search_regex(r'<source src="(.+?)" type="video/mp4">',
-            webpage, u'video URL')
-
-        video_title = self._html_search_regex('<h1 class="videoTitle slidePanelMovable">(.+?)</h1>',
-            webpage, u'title')
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'ext':      video_extension,
-            'title':    video_title,
-        }]
-        
-class InaIE(InfoExtractor):
-    """Information Extractor for Ina.fr"""
-    _VALID_URL = r'(?:http://)?(?:www\.)?ina\.fr/video/(?P<id>I[0-9]+)/.*'
-
-    def _real_extract(self,url):
-        mobj = re.match(self._VALID_URL, url)
-
-        video_id = mobj.group('id')
-        mrss_url='http://player.ina.fr/notices/%s.mrss' % video_id
-        video_extension = 'mp4'
-        webpage = self._download_webpage(mrss_url, video_id)
-
-        self.report_extraction(video_id)
-
-        video_url = self._html_search_regex(r'<media:player url="(?P<mp4url>http://mp4.ina.fr/[^"]+\.mp4)',
-            webpage, u'video URL')
-
-        video_title = self._search_regex(r'<title><!\[CDATA\[(?P<titre>.*?)]]></title>',
-            webpage, u'title')
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'ext':      video_extension,
-            'title':    video_title,
-        }]
-
-class HowcastIE(InfoExtractor):
-    """Information Extractor for Howcast.com"""
-    _VALID_URL = r'(?:https?://)?(?:www\.)?howcast\.com/videos/(?P<id>\d+)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-
-        video_id = mobj.group('id')
-        webpage_url = 'http://www.howcast.com/videos/' + video_id
-        webpage = self._download_webpage(webpage_url, video_id)
-
-        self.report_extraction(video_id)
-
-        video_url = self._search_regex(r'\'?file\'?: "(http://mobile-media\.howcast\.com/[0-9]+\.mp4)',
-            webpage, u'video URL')
-
-        video_title = self._html_search_regex(r'<meta content=(?:"([^"]+)"|\'([^\']+)\') property=\'og:title\'',
-            webpage, u'title')
-
-        video_description = self._html_search_regex(r'<meta content=(?:"([^"]+)"|\'([^\']+)\') name=\'description\'',
-            webpage, u'description', fatal=False)
-
-        thumbnail = self._html_search_regex(r'<meta content=\'(.+?)\' property=\'og:image\'',
-            webpage, u'thumbnail', fatal=False)
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'ext':      'mp4',
-            'title':    video_title,
-            'description': video_description,
-            'thumbnail': thumbnail,
-        }]
-
-class VineIE(InfoExtractor):
-    """Information Extractor for Vine.co"""
-    _VALID_URL = r'(?:https?://)?(?:www\.)?vine\.co/v/(?P<id>\w+)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-
-        video_id = mobj.group('id')
-        webpage_url = 'https://vine.co/v/' + video_id
-        webpage = self._download_webpage(webpage_url, video_id)
-
-        self.report_extraction(video_id)
-
-        video_url = self._html_search_regex(r'<meta property="twitter:player:stream" content="(.+?)"',
-            webpage, u'video URL')
-
-        video_title = self._html_search_regex(r'<meta property="og:title" content="(.+?)"',
-            webpage, u'title')
-
-        thumbnail = self._html_search_regex(r'<meta property="og:image" content="(.+?)(\?.*?)?"',
-            webpage, u'thumbnail', fatal=False)
-
-        uploader = self._html_search_regex(r'<div class="user">.*?<h2>(.+?)</h2>',
-            webpage, u'uploader', fatal=False, flags=re.DOTALL)
-
-        return [{
-            'id':        video_id,
-            'url':       video_url,
-            'ext':       'mp4',
-            'title':     video_title,
-            'thumbnail': thumbnail,
-            'uploader':  uploader,
-        }]
-
-class FlickrIE(InfoExtractor):
-    """Information Extractor for Flickr videos"""
-    _VALID_URL = r'(?:https?://)?(?:www\.)?flickr\.com/photos/(?P<uploader_id>[\w\-_@]+)/(?P<id>\d+).*'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-
-        video_id = mobj.group('id')
-        video_uploader_id = mobj.group('uploader_id')
-        webpage_url = 'http://www.flickr.com/photos/' + video_uploader_id + '/' + video_id
-        webpage = self._download_webpage(webpage_url, video_id)
-
-        secret = self._search_regex(r"photo_secret: '(\w+)'", webpage, u'secret')
-
-        first_url = 'https://secure.flickr.com/apps/video/video_mtl_xml.gne?v=x&photo_id=' + video_id + '&secret=' + secret + '&bitrate=700&target=_self'
-        first_xml = self._download_webpage(first_url, video_id, 'Downloading first data webpage')
-
-        node_id = self._html_search_regex(r'<Item id="id">(\d+-\d+)</Item>',
-            first_xml, u'node_id')
-
-        second_url = 'https://secure.flickr.com/video_playlist.gne?node_id=' + node_id + '&tech=flash&mode=playlist&bitrate=700&secret=' + secret + '&rd=video.yahoo.com&noad=1'
-        second_xml = self._download_webpage(second_url, video_id, 'Downloading second data webpage')
-
-        self.report_extraction(video_id)
-
-        mobj = re.search(r'<STREAM APP="(.+?)" FULLPATH="(.+?)"', second_xml)
-        if mobj is None:
-            raise ExtractorError(u'Unable to extract video url')
-        video_url = mobj.group(1) + unescapeHTML(mobj.group(2))
-
-        video_title = self._html_search_regex(r'<meta property="og:title" content=(?:"([^"]+)"|\'([^\']+)\')',
-            webpage, u'video title')
-
-        video_description = self._html_search_regex(r'<meta property="og:description" content=(?:"([^"]+)"|\'([^\']+)\')',
-            webpage, u'description', fatal=False)
-
-        thumbnail = self._html_search_regex(r'<meta property="og:image" content=(?:"([^"]+)"|\'([^\']+)\')',
-            webpage, u'thumbnail', fatal=False)
-
-        return [{
-            'id':          video_id,
-            'url':         video_url,
-            'ext':         'mp4',
-            'title':       video_title,
-            'description': video_description,
-            'thumbnail':   thumbnail,
-            'uploader_id': video_uploader_id,
-        }]
-
-class TeamcocoIE(InfoExtractor):
-    _VALID_URL = r'http://teamcoco\.com/video/(?P<url_title>.*)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        url_title = mobj.group('url_title')
-        webpage = self._download_webpage(url, url_title)
-
-        video_id = self._html_search_regex(r'<article class="video" data-id="(\d+?)"',
-            webpage, u'video id')
-
-        self.report_extraction(video_id)
-
-        video_title = self._html_search_regex(r'<meta property="og:title" content="(.+?)"',
-            webpage, u'title')
-
-        thumbnail = self._html_search_regex(r'<meta property="og:image" content="(.+?)"',
-            webpage, u'thumbnail', fatal=False)
-
-        video_description = self._html_search_regex(r'<meta property="og:description" content="(.*?)"',
-            webpage, u'description', fatal=False)
-
-        data_url = 'http://teamcoco.com/cvp/2.0/%s.xml' % video_id
-        data = self._download_webpage(data_url, video_id, 'Downloading data webpage')
-
-        video_url = self._html_search_regex(r'<file type="high".*?>(.*?)</file>',
-            data, u'video URL')
-
-        return [{
-            'id':          video_id,
-            'url':         video_url,
-            'ext':         'mp4',
-            'title':       video_title,
-            'thumbnail':   thumbnail,
-            'description': video_description,
-        }]
-
-class XHamsterIE(InfoExtractor):
-    """Information Extractor for xHamster"""
-    _VALID_URL = r'(?:http://)?(?:www.)?xhamster\.com/movies/(?P<id>[0-9]+)/.*\.html'
-
-    def _real_extract(self,url):
-        mobj = re.match(self._VALID_URL, url)
-
-        video_id = mobj.group('id')
-        mrss_url = 'http://xhamster.com/movies/%s/.html' % video_id
-        webpage = self._download_webpage(mrss_url, video_id)
-
-        mobj = re.search(r'\'srv\': \'(?P<server>[^\']*)\',\s*\'file\': \'(?P<file>[^\']+)\',', webpage)
-        if mobj is None:
-            raise ExtractorError(u'Unable to extract media URL')
-        if len(mobj.group('server')) == 0:
-            video_url = compat_urllib_parse.unquote(mobj.group('file'))
-        else:
-            video_url = mobj.group('server')+'/key='+mobj.group('file')
-        video_extension = video_url.split('.')[-1]
-
-        video_title = self._html_search_regex(r'<title>(?P<title>.+?) - xHamster\.com</title>',
-            webpage, u'title')
-
-        # Can't see the description anywhere in the UI
-        # video_description = self._html_search_regex(r'<span>Description: </span>(?P<description>[^<]+)',
-        #     webpage, u'description', fatal=False)
-        # if video_description: video_description = unescapeHTML(video_description)
-
-        mobj = re.search(r'hint=\'(?P<upload_date_Y>[0-9]{4})-(?P<upload_date_m>[0-9]{2})-(?P<upload_date_d>[0-9]{2}) [0-9]{2}:[0-9]{2}:[0-9]{2} [A-Z]{3,4}\'', webpage)
-        if mobj:
-            video_upload_date = mobj.group('upload_date_Y')+mobj.group('upload_date_m')+mobj.group('upload_date_d')
-        else:
-            video_upload_date = None
-            self._downloader.report_warning(u'Unable to extract upload date')
-
-        video_uploader_id = self._html_search_regex(r'<a href=\'/user/[^>]+>(?P<uploader_id>[^<]+)',
-            webpage, u'uploader id', default=u'anonymous')
-
-        video_thumbnail = self._search_regex(r'\'image\':\'(?P<thumbnail>[^\']+)\'',
-            webpage, u'thumbnail', fatal=False)
-
-        return [{
-            'id':       video_id,
-            'url':      video_url,
-            'ext':      video_extension,
-            'title':    video_title,
-            # 'description': video_description,
-            'upload_date': video_upload_date,
-            'uploader_id': video_uploader_id,
-            'thumbnail': video_thumbnail
-        }]
-
-class HypemIE(InfoExtractor):
-    """Information Extractor for hypem"""
-    _VALID_URL = r'(?:http://)?(?:www\.)?hypem\.com/track/([^/]+)/([^/]+)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        track_id = mobj.group(1)
-
-        data = { 'ax': 1, 'ts': time.time() }
-        data_encoded = compat_urllib_parse.urlencode(data)
-        complete_url = url + "?" + data_encoded
-        request = compat_urllib_request.Request(complete_url)
-        response, urlh = self._download_webpage_handle(request, track_id, u'Downloading webpage with the url')
-        cookie = urlh.headers.get('Set-Cookie', '')
-
-        self.report_extraction(track_id)
-
-        html_tracks = self._html_search_regex(r'<script type="application/json" id="displayList-data">(.*?)</script>',
-            response, u'tracks', flags=re.MULTILINE|re.DOTALL).strip()
-        try:
-            track_list = json.loads(html_tracks)
-            track = track_list[u'tracks'][0]
-        except ValueError:
-            raise ExtractorError(u'Hypemachine contained invalid JSON.')
-
-        key = track[u"key"]
-        track_id = track[u"id"]
-        artist = track[u"artist"]
-        title = track[u"song"]
-
-        serve_url = "http://hypem.com/serve/source/%s/%s" % (compat_str(track_id), compat_str(key))
-        request = compat_urllib_request.Request(serve_url, "" , {'Content-Type': 'application/json'})
-        request.add_header('cookie', cookie)
-        song_data_json = self._download_webpage(request, track_id, u'Downloading metadata')
-        try:
-            song_data = json.loads(song_data_json)
-        except ValueError:
-            raise ExtractorError(u'Hypemachine contained invalid JSON.')
-        final_url = song_data[u"url"]
-
-        return [{
-            'id':       track_id,
-            'url':      final_url,
-            'ext':      "mp3",
-            'title':    title,
-            'artist':   artist,
-        }]
-
-class Vbox7IE(InfoExtractor):
-    """Information Extractor for Vbox7"""
-    _VALID_URL = r'(?:http://)?(?:www\.)?vbox7\.com/play:([^/]+)'
-
-    def _real_extract(self,url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group(1)
-
-        redirect_page, urlh = self._download_webpage_handle(url, video_id)
-        new_location = self._search_regex(r'window\.location = \'(.*)\';', redirect_page, u'redirect location')
-        redirect_url = urlh.geturl() + new_location
-        webpage = self._download_webpage(redirect_url, video_id, u'Downloading redirect page')
-
-        title = self._html_search_regex(r'<title>(.*)</title>',
-            webpage, u'title').split('/')[0].strip()
-
-        ext = "flv"
-        info_url = "http://vbox7.com/play/magare.do"
-        data = compat_urllib_parse.urlencode({'as3':'1','vid':video_id})
-        info_request = compat_urllib_request.Request(info_url, data)
-        info_request.add_header('Content-Type', 'application/x-www-form-urlencoded')
-        info_response = self._download_webpage(info_request, video_id, u'Downloading info webpage')
-        if info_response is None:
-            raise ExtractorError(u'Unable to extract the media url')
-        (final_url, thumbnail_url) = map(lambda x: x.split('=')[1], info_response.split('&'))
-
-        return [{
-            'id':        video_id,
-            'url':       final_url,
-            'ext':       ext,
-            'title':     title,
-            'thumbnail': thumbnail_url,
-        }]
-
-class GametrailersIE(InfoExtractor):
-    _VALID_URL = r'http://www.gametrailers.com/(?P<type>videos|reviews|full-episodes)/(?P<id>.*?)/(?P<title>.*)'
-
-    def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-        video_id = mobj.group('id')
-        video_type = mobj.group('type')
-        webpage = self._download_webpage(url, video_id)
-        if video_type == 'full-episodes':
-            mgid_re = r'data-video="(?P<mgid>mgid:.*?)"'
-        else:
-            mgid_re = r'data-contentId=\'(?P<mgid>mgid:.*?)\''
-        mgid = self._search_regex(mgid_re, webpage, u'mgid')
-        data = compat_urllib_parse.urlencode({'uri': mgid, 'acceptMethods': 'fms'})
-
-        info_page = self._download_webpage('http://www.gametrailers.com/feeds/mrss?' + data,
-                                           video_id, u'Downloading video info')
-        links_webpage = self._download_webpage('http://www.gametrailers.com/feeds/mediagen/?' + data,
-                                               video_id, u'Downloading video urls info')
-
-        self.report_extraction(video_id)
-        info_re = r'''<title><!\[CDATA\[(?P<title>.*?)\]\]></title>.*
-                      <description><!\[CDATA\[(?P<description>.*?)\]\]></description>.*
-                      <image>.*
-                        <url>(?P<thumb>.*?)</url>.*
-                      </image>'''
-
-        m_info = re.search(info_re, info_page, re.VERBOSE|re.DOTALL)
-        if m_info is None:
-            raise ExtractorError(u'Unable to extract video info')
-        video_title = m_info.group('title')
-        video_description = m_info.group('description')
-        video_thumb = m_info.group('thumb')
-
-        m_urls = list(re.finditer(r'<src>(?P<url>.*)</src>', links_webpage))
-        if m_urls is None or len(m_urls) == 0:
-            raise ExtractError(u'Unable to extrat video url')
-        # They are sorted from worst to best quality
-        video_url = m_urls[-1].group('url')
-
-        return {'url':         video_url,
-                'id':          video_id,
-                'title':       video_title,
-                # Videos are actually flv not mp4
-                'ext':         'flv',
-                'thumbnail':   video_thumb,
-                'description': video_description,
-                }
-
-def gen_extractors():
-    """ Return a list of an instance of every supported extractor.
-    The order does matter; the first extractor matched is the one handling the URL.
-    """
-    return [
-        YoutubePlaylistIE(),
-        YoutubeChannelIE(),
-        YoutubeUserIE(),
-        YoutubeSearchIE(),
-        YoutubeIE(),
-        MetacafeIE(),
-        DailymotionIE(),
-        GoogleSearchIE(),
-        PhotobucketIE(),
-        YahooIE(),
-        YahooSearchIE(),
-        DepositFilesIE(),
-        FacebookIE(),
-        BlipTVIE(),
-        BlipTVUserIE(),
-        VimeoIE(),
-        MyVideoIE(),
-        ComedyCentralIE(),
-        EscapistIE(),
-        CollegeHumorIE(),
-        XVideosIE(),
-        SoundcloudSetIE(),
-        SoundcloudIE(),
-        InfoQIE(),
-        MixcloudIE(),
-        StanfordOpenClassroomIE(),
-        MTVIE(),
-        YoukuIE(),
-        XNXXIE(),
-        YouJizzIE(),
-        PornotubeIE(),
-        YouPornIE(),
-        GooglePlusIE(),
-        ArteTvIE(),
-        NBAIE(),
-        WorldStarHipHopIE(),
-        JustinTVIE(),
-        FunnyOrDieIE(),
-        SteamIE(),
-        UstreamIE(),
-        RBMARadioIE(),
-        EightTracksIE(),
-        KeekIE(),
-        TEDIE(),
-        MySpassIE(),
-        SpiegelIE(),
-        LiveLeakIE(),
-        ARDIE(),
-        ZDFIE(),
-        TumblrIE(),
-        BandcampIE(),
-        RedTubeIE(),
-        InaIE(),
-        HowcastIE(),
-        VineIE(),
-        FlickrIE(),
-        TeamcocoIE(),
-        XHamsterIE(),
-        HypemIE(),
-        Vbox7IE(),
-        GametrailersIE(),
-        StatigramIE(),
-        GenericIE()
-    ]
-
-def get_info_extractor(ie_name):
-    """Returns the info extractor class with the given ie_name"""
-    return globals()[ie_name+'IE']
+from .extractor import gen_extractors, get_info_extractor