mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-25 12:55:36 +08:00
87 lines
3.8 KiB
Python
87 lines
3.8 KiB
Python
import re
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import json
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import xml.etree.ElementTree
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from .common import InfoExtractor
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from ..utils import (
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compat_urllib_parse,
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find_xpath_attr,
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compat_urlparse,
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)
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class BrightcoveIE(InfoExtractor):
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_VALID_URL = r'https?://.*brightcove\.com/(services|viewer).*\?(?P<query>.*)'
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_FEDERATED_URL_TEMPLATE = 'http://c.brightcove.com/services/viewer/htmlFederated?%s'
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_PLAYLIST_URL_TEMPLATE = 'http://c.brightcove.com/services/json/experience/runtime/?command=get_programming_for_experience&playerKey=%s'
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# There is a test for Brigtcove in GenericIE, that way we test both the download
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# and the detection of videos, and we don't have to find an URL that is always valid
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@classmethod
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def _build_brighcove_url(cls, object_str):
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"""
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Build a Brightcove url from a xml string containing
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<object class="BrightcoveExperience">{params}</object>
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"""
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object_doc = xml.etree.ElementTree.fromstring(object_str)
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assert u'BrightcoveExperience' in object_doc.attrib['class']
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params = {'flashID': object_doc.attrib['id'],
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'playerID': find_xpath_attr(object_doc, './param', 'name', 'playerID').attrib['value'],
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}
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playerKey = find_xpath_attr(object_doc, './param', 'name', 'playerKey')
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# Not all pages define this value
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if playerKey is not None:
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params['playerKey'] = playerKey.attrib['value']
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videoPlayer = find_xpath_attr(object_doc, './param', 'name', '@videoPlayer')
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if videoPlayer is not None:
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params['@videoPlayer'] = videoPlayer.attrib['value']
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data = compat_urllib_parse.urlencode(params)
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return cls._FEDERATED_URL_TEMPLATE % data
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def _real_extract(self, url):
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mobj = re.match(self._VALID_URL, url)
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query_str = mobj.group('query')
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query = compat_urlparse.parse_qs(query_str)
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videoPlayer = query.get('@videoPlayer')
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if videoPlayer:
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return self._get_video_info(videoPlayer[0], query_str)
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else:
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player_key = query['playerKey']
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return self._get_playlist_info(player_key[0])
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def _get_video_info(self, video_id, query):
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request_url = self._FEDERATED_URL_TEMPLATE % query
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webpage = self._download_webpage(request_url, video_id)
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self.report_extraction(video_id)
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info = self._search_regex(r'var experienceJSON = ({.*?});', webpage, 'json')
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info = json.loads(info)['data']
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video_info = info['programmedContent']['videoPlayer']['mediaDTO']
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return self._extract_video_info(video_info)
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def _get_playlist_info(self, player_key):
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playlist_info = self._download_webpage(self._PLAYLIST_URL_TEMPLATE % player_key,
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player_key, u'Downloading playlist information')
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playlist_info = json.loads(playlist_info)['videoList']
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videos = [self._extract_video_info(video_info) for video_info in playlist_info['mediaCollectionDTO']['videoDTOs']]
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return self.playlist_result(videos, playlist_id=playlist_info['id'],
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playlist_title=playlist_info['mediaCollectionDTO']['displayName'])
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def _extract_video_info(self, video_info):
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renditions = video_info['renditions']
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renditions = sorted(renditions, key=lambda r: r['size'])
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best_format = renditions[-1]
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return {'id': video_info['id'],
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'title': video_info['displayName'],
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'url': best_format['defaultURL'],
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'ext': 'mp4',
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'description': video_info.get('shortDescription'),
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'thumbnail': video_info.get('videoStillURL') or video_info.get('thumbnailURL'),
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'uploader': video_info.get('publisherName'),
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}
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