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