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			248 lines
		
	
	
		
			9.5 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			248 lines
		
	
	
		
			9.5 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| # coding: utf-8
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| from __future__ import unicode_literals
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| 
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| import itertools
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| import re
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| 
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| from .common import InfoExtractor
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| from ..compat import (
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|     compat_urllib_parse,
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|     compat_urllib_request,
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| )
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| from ..utils import (
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|     ExtractorError,
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|     parse_iso8601,
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| )
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| 
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| 
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| class TwitchIE(InfoExtractor):
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|     # TODO: One broadcast may be split into multiple videos. The key
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|     # 'broadcast_id' is the same for all parts, and 'broadcast_part'
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|     # starts at 1 and increases. Can we treat all parts as one video?
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|     _VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?twitch\.tv/
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|         (?:
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|             (?P<channelid>[^/]+)|
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|             (?:(?:[^/]+)/v/(?P<vodid>[^/]+))|
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|             (?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
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|             (?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
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|         )
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|         /?(?:\#.*)?$
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|         """
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|     _PAGE_LIMIT = 100
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|     _API_BASE = 'https://api.twitch.tv'
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|     _LOGIN_URL = 'https://secure.twitch.tv/user/login'
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|     _TESTS = [{
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|         'url': 'http://www.twitch.tv/riotgames/b/577357806',
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|         'info_dict': {
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|             'id': 'a577357806',
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|             'title': 'Worlds Semifinals - Star Horn Royal Club vs. OMG',
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|         },
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|         'playlist_mincount': 12,
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|     }, {
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|         'url': 'http://www.twitch.tv/acracingleague/c/5285812',
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|         'info_dict': {
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|             'id': 'c5285812',
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|             'title': 'ACRL Off Season - Sports Cars @ Nordschleife',
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|         },
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|         'playlist_mincount': 3,
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|     }, {
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|         'url': 'http://www.twitch.tv/vanillatv',
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|         'info_dict': {
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|             'id': 'vanillatv',
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|             'title': 'VanillaTV',
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|         },
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|         'playlist_mincount': 412,
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|     }]
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| 
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|     def _handle_error(self, response):
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|         if not isinstance(response, dict):
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|             return
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|         error = response.get('error')
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|         if error:
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|             raise ExtractorError(
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|                 '%s returned error: %s - %s' % (self.IE_NAME, error, response.get('message')),
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|                 expected=True)
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| 
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|     def _download_json(self, url, video_id, note='Downloading JSON metadata'):
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|         response = super(TwitchIE, self)._download_json(url, video_id, note)
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|         self._handle_error(response)
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|         return response
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| 
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|     def _extract_media(self, item, item_id):
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|         ITEMS = {
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|             'a': 'video',
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|             'v': 'vod',
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|             'c': 'chapter',
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|         }
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|         info = self._extract_info(self._download_json(
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|             '%s/kraken/videos/%s%s' % (self._API_BASE, item, item_id), item_id,
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|             'Downloading %s info JSON' % ITEMS[item]))
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| 
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|         if item == 'v':
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|             access_token = self._download_json(
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|                 '%s/api/vods/%s/access_token' % (self._API_BASE, item_id), item_id,
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|                 'Downloading %s access token' % ITEMS[item])
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|             formats = self._extract_m3u8_formats(
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|                 'http://usher.twitch.tv/vod/%s?nauth=%s&nauthsig=%s'
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|                 % (item_id, access_token['token'], access_token['sig']),
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|                 item_id, 'mp4')
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|             info['formats'] = formats
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|             return info
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| 
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|         response = self._download_json(
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|             '%s/api/videos/%s%s' % (self._API_BASE, item, item_id), item_id,
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|             'Downloading %s playlist JSON' % ITEMS[item])
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|         entries = []
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|         chunks = response['chunks']
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|         qualities = list(chunks.keys())
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|         for num, fragment in enumerate(zip(*chunks.values()), start=1):
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|             formats = []
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|             for fmt_num, fragment_fmt in enumerate(fragment):
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|                 format_id = qualities[fmt_num]
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|                 fmt = {
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|                     'url': fragment_fmt['url'],
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|                     'format_id': format_id,
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|                     'quality': 1 if format_id == 'live' else 0,
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|                 }
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|                 m = re.search(r'^(?P<height>\d+)[Pp]', format_id)
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|                 if m:
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|                     fmt['height'] = int(m.group('height'))
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|                 formats.append(fmt)
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|             self._sort_formats(formats)
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|             entry = dict(info)
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|             entry['id'] = '%s_%d' % (entry['id'], num)
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|             entry['title'] = '%s part %d' % (entry['title'], num)
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|             entry['formats'] = formats
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|             entries.append(entry)
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|         return self.playlist_result(entries, info['id'], info['title'])
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| 
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|     def _extract_info(self, info):
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|         return {
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|             'id': info['_id'],
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|             'title': info['title'],
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|             'description': info['description'],
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|             'duration': info['length'],
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|             'thumbnail': info['preview'],
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|             'uploader': info['channel']['display_name'],
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|             'uploader_id': info['channel']['name'],
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|             'timestamp': parse_iso8601(info['recorded_at']),
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|             'view_count': info['views'],
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|         }
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| 
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|     def _real_initialize(self):
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|         self._login()
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| 
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|     def _login(self):
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|         (username, password) = self._get_login_info()
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|         if username is None:
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|             return
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| 
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|         login_page = self._download_webpage(
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|             self._LOGIN_URL, None, 'Downloading login page')
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| 
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|         authenticity_token = self._search_regex(
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|             r'<input name="authenticity_token" type="hidden" value="([^"]+)"',
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|             login_page, 'authenticity token')
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| 
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|         login_form = {
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|             'utf8': '✓'.encode('utf-8'),
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|             'authenticity_token': authenticity_token,
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|             'redirect_on_login': '',
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|             'embed_form': 'false',
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|             'mp_source_action': '',
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|             'follow': '',
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|             'user[login]': username,
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|             'user[password]': password,
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|         }
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| 
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|         request = compat_urllib_request.Request(
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|             self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
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|         request.add_header('Referer', self._LOGIN_URL)
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|         response = self._download_webpage(
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|             request, None, 'Logging in as %s' % username)
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| 
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|         m = re.search(
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|             r"id=([\"'])login_error_message\1[^>]*>(?P<msg>[^<]+)", response)
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|         if m:
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|             raise ExtractorError(
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|                 'Unable to login: %s' % m.group('msg').strip(), expected=True)
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| 
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|     def _real_extract(self, url):
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|         mobj = re.match(self._VALID_URL, url)
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|         if mobj.group('chapterid'):
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|             return self._extract_media('c', mobj.group('chapterid'))
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| 
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|             """
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|             webpage = self._download_webpage(url, chapter_id)
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|             m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
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|             if not m:
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|                 raise ExtractorError('Cannot find archive of a chapter')
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|             archive_id = m.group(1)
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| 
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|             api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
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|             doc = self._download_xml(
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|                 api, chapter_id,
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|                 note='Downloading chapter information',
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|                 errnote='Chapter information download failed')
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|             for a in doc.findall('.//archive'):
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|                 if archive_id == a.find('./id').text:
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|                     break
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|             else:
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|                 raise ExtractorError('Could not find chapter in chapter information')
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| 
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|             video_url = a.find('./video_file_url').text
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|             video_ext = video_url.rpartition('.')[2] or 'flv'
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| 
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|             chapter_api_url = 'https://api.twitch.tv/kraken/videos/c' + chapter_id
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|             chapter_info = self._download_json(
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|                 chapter_api_url, 'c' + chapter_id,
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|                 note='Downloading chapter metadata',
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|                 errnote='Download of chapter metadata failed')
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| 
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|             bracket_start = int(doc.find('.//bracket_start').text)
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|             bracket_end = int(doc.find('.//bracket_end').text)
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| 
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|             # TODO determine start (and probably fix up file)
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|             #  youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
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|             #video_url += '?start=' + TODO:start_timestamp
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|             # bracket_start is 13290, but we want 51670615
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|             self._downloader.report_warning('Chapter detected, but we can just download the whole file. '
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|                                             'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
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| 
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|             info = {
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|                 'id': 'c' + chapter_id,
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|                 'url': video_url,
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|                 'ext': video_ext,
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|                 'title': chapter_info['title'],
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|                 'thumbnail': chapter_info['preview'],
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|                 'description': chapter_info['description'],
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|                 'uploader': chapter_info['channel']['display_name'],
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|                 'uploader_id': chapter_info['channel']['name'],
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|             }
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|             return info
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|             """
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|         elif mobj.group('videoid'):
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|             return self._extract_media('a', mobj.group('videoid'))
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|         elif mobj.group('vodid'):
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|             return self._extract_media('v', mobj.group('vodid'))
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|         elif mobj.group('channelid'):
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|             channel_id = mobj.group('channelid')
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|             info = self._download_json(
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|                 '%s/kraken/channels/%s' % (self._API_BASE, channel_id),
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|                 channel_id, 'Downloading channel info JSON')
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|             channel_name = info.get('display_name') or info.get('name')
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|             entries = []
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|             offset = 0
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|             limit = self._PAGE_LIMIT
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|             for counter in itertools.count(1):
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|                 response = self._download_json(
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|                     '%s/kraken/channels/%s/videos/?offset=%d&limit=%d'
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|                     % (self._API_BASE, channel_id, offset, limit),
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|                     channel_id, 'Downloading channel videos JSON page %d' % counter)
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|                 videos = response['videos']
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|                 if not videos:
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|                     break
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|                 entries.extend([self.url_result(video['url'], 'Twitch') for video in videos])
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|                 offset += limit
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|             return self.playlist_result(entries, channel_id, channel_name)
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