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[youtubedl] / youtube_dl / extractor / twitch.py
1 # coding: utf-8
2 from __future__ import unicode_literals
3
4 import itertools
5 import re
6
7 from .common import InfoExtractor
8 from ..compat import (
9 compat_urllib_parse,
10 compat_urllib_request,
11 )
12 from ..utils import (
13 ExtractorError,
14 parse_iso8601,
15 )
16
17
18 class TwitchIE(InfoExtractor):
19 # TODO: One broadcast may be split into multiple videos. The key
20 # 'broadcast_id' is the same for all parts, and 'broadcast_part'
21 # starts at 1 and increases. Can we treat all parts as one video?
22 _VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?twitch\.tv/
23 (?:
24 (?P<channelid>[^/]+)|
25 (?:(?:[^/]+)/v/(?P<vodid>[^/]+))|
26 (?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
27 (?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
28 )
29 /?(?:\#.*)?$
30 """
31 _PAGE_LIMIT = 100
32 _API_BASE = 'https://api.twitch.tv'
33 _LOGIN_URL = 'https://secure.twitch.tv/user/login'
34 _TESTS = [{
35 'url': 'http://www.twitch.tv/riotgames/b/577357806',
36 'info_dict': {
37 'id': 'a577357806',
38 'title': 'Worlds Semifinals - Star Horn Royal Club vs. OMG',
39 },
40 'playlist_mincount': 12,
41 }, {
42 'url': 'http://www.twitch.tv/acracingleague/c/5285812',
43 'info_dict': {
44 'id': 'c5285812',
45 'title': 'ACRL Off Season - Sports Cars @ Nordschleife',
46 },
47 'playlist_mincount': 3,
48 }, {
49 'url': 'http://www.twitch.tv/vanillatv',
50 'info_dict': {
51 'id': 'vanillatv',
52 'title': 'VanillaTV',
53 },
54 'playlist_mincount': 412,
55 }]
56
57 def _handle_error(self, response):
58 if not isinstance(response, dict):
59 return
60 error = response.get('error')
61 if error:
62 raise ExtractorError(
63 '%s returned error: %s - %s' % (self.IE_NAME, error, response.get('message')),
64 expected=True)
65
66 def _download_json(self, url, video_id, note='Downloading JSON metadata'):
67 response = super(TwitchIE, self)._download_json(url, video_id, note)
68 self._handle_error(response)
69 return response
70
71 def _extract_media(self, item, item_id):
72 ITEMS = {
73 'a': 'video',
74 'v': 'vod',
75 'c': 'chapter',
76 }
77 info = self._extract_info(self._download_json(
78 '%s/kraken/videos/%s%s' % (self._API_BASE, item, item_id), item_id,
79 'Downloading %s info JSON' % ITEMS[item]))
80
81 if item == 'v':
82 access_token = self._download_json(
83 '%s/api/vods/%s/access_token' % (self._API_BASE, item_id), item_id,
84 'Downloading %s access token' % ITEMS[item])
85 formats = self._extract_m3u8_formats(
86 'http://usher.twitch.tv/vod/%s?nauth=%s&nauthsig=%s'
87 % (item_id, access_token['token'], access_token['sig']),
88 item_id, 'mp4')
89 info['formats'] = formats
90 return info
91
92 response = self._download_json(
93 '%s/api/videos/%s%s' % (self._API_BASE, item, item_id), item_id,
94 'Downloading %s playlist JSON' % ITEMS[item])
95 entries = []
96 chunks = response['chunks']
97 qualities = list(chunks.keys())
98 for num, fragment in enumerate(zip(*chunks.values()), start=1):
99 formats = []
100 for fmt_num, fragment_fmt in enumerate(fragment):
101 format_id = qualities[fmt_num]
102 fmt = {
103 'url': fragment_fmt['url'],
104 'format_id': format_id,
105 'quality': 1 if format_id == 'live' else 0,
106 }
107 m = re.search(r'^(?P<height>\d+)[Pp]', format_id)
108 if m:
109 fmt['height'] = int(m.group('height'))
110 formats.append(fmt)
111 self._sort_formats(formats)
112 entry = dict(info)
113 entry['id'] = '%s_%d' % (entry['id'], num)
114 entry['title'] = '%s part %d' % (entry['title'], num)
115 entry['formats'] = formats
116 entries.append(entry)
117 return self.playlist_result(entries, info['id'], info['title'])
118
119 def _extract_info(self, info):
120 return {
121 'id': info['_id'],
122 'title': info['title'],
123 'description': info['description'],
124 'duration': info['length'],
125 'thumbnail': info['preview'],
126 'uploader': info['channel']['display_name'],
127 'uploader_id': info['channel']['name'],
128 'timestamp': parse_iso8601(info['recorded_at']),
129 'view_count': info['views'],
130 }
131
132 def _real_initialize(self):
133 self._login()
134
135 def _login(self):
136 (username, password) = self._get_login_info()
137 if username is None:
138 return
139
140 login_page = self._download_webpage(
141 self._LOGIN_URL, None, 'Downloading login page')
142
143 authenticity_token = self._search_regex(
144 r'<input name="authenticity_token" type="hidden" value="([^"]+)"',
145 login_page, 'authenticity token')
146
147 login_form = {
148 'utf8': '✓'.encode('utf-8'),
149 'authenticity_token': authenticity_token,
150 'redirect_on_login': '',
151 'embed_form': 'false',
152 'mp_source_action': '',
153 'follow': '',
154 'user[login]': username,
155 'user[password]': password,
156 }
157
158 request = compat_urllib_request.Request(
159 self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
160 request.add_header('Referer', self._LOGIN_URL)
161 response = self._download_webpage(
162 request, None, 'Logging in as %s' % username)
163
164 m = re.search(
165 r"id=([\"'])login_error_message\1[^>]*>(?P<msg>[^<]+)", response)
166 if m:
167 raise ExtractorError(
168 'Unable to login: %s' % m.group('msg').strip(), expected=True)
169
170 def _real_extract(self, url):
171 mobj = re.match(self._VALID_URL, url)
172 if mobj.group('chapterid'):
173 return self._extract_media('c', mobj.group('chapterid'))
174
175 """
176 webpage = self._download_webpage(url, chapter_id)
177 m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
178 if not m:
179 raise ExtractorError('Cannot find archive of a chapter')
180 archive_id = m.group(1)
181
182 api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
183 doc = self._download_xml(
184 api, chapter_id,
185 note='Downloading chapter information',
186 errnote='Chapter information download failed')
187 for a in doc.findall('.//archive'):
188 if archive_id == a.find('./id').text:
189 break
190 else:
191 raise ExtractorError('Could not find chapter in chapter information')
192
193 video_url = a.find('./video_file_url').text
194 video_ext = video_url.rpartition('.')[2] or 'flv'
195
196 chapter_api_url = 'https://api.twitch.tv/kraken/videos/c' + chapter_id
197 chapter_info = self._download_json(
198 chapter_api_url, 'c' + chapter_id,
199 note='Downloading chapter metadata',
200 errnote='Download of chapter metadata failed')
201
202 bracket_start = int(doc.find('.//bracket_start').text)
203 bracket_end = int(doc.find('.//bracket_end').text)
204
205 # TODO determine start (and probably fix up file)
206 # youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
207 #video_url += '?start=' + TODO:start_timestamp
208 # bracket_start is 13290, but we want 51670615
209 self._downloader.report_warning('Chapter detected, but we can just download the whole file. '
210 'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
211
212 info = {
213 'id': 'c' + chapter_id,
214 'url': video_url,
215 'ext': video_ext,
216 'title': chapter_info['title'],
217 'thumbnail': chapter_info['preview'],
218 'description': chapter_info['description'],
219 'uploader': chapter_info['channel']['display_name'],
220 'uploader_id': chapter_info['channel']['name'],
221 }
222 return info
223 """
224 elif mobj.group('videoid'):
225 return self._extract_media('a', mobj.group('videoid'))
226 elif mobj.group('vodid'):
227 return self._extract_media('v', mobj.group('vodid'))
228 elif mobj.group('channelid'):
229 channel_id = mobj.group('channelid')
230 info = self._download_json(
231 '%s/kraken/channels/%s' % (self._API_BASE, channel_id),
232 channel_id, 'Downloading channel info JSON')
233 channel_name = info.get('display_name') or info.get('name')
234 entries = []
235 offset = 0
236 limit = self._PAGE_LIMIT
237 for counter in itertools.count(1):
238 response = self._download_json(
239 '%s/kraken/channels/%s/videos/?offset=%d&limit=%d'
240 % (self._API_BASE, channel_id, offset, limit),
241 channel_id, 'Downloading channel videos JSON page %d' % counter)
242 videos = response['videos']
243 if not videos:
244 break
245 entries.extend([self.url_result(video['url'], 'Twitch') for video in videos])
246 offset += limit
247 return self.playlist_result(entries, channel_id, channel_name)