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125 lines
4.2 KiB
Python
125 lines
4.2 KiB
Python
from __future__ import unicode_literals
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import json
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import re
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from .subtitles import SubtitlesInfoExtractor
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from ..utils import (
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compat_str,
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)
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class TEDIE(SubtitlesInfoExtractor):
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_VALID_URL = r'''(?x)
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(?P<proto>https?://)
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(?P<type>www|embed)(?P<urlmain>\.ted\.com/
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(
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(?P<type_playlist>playlists(?:/\d+)?) # We have a playlist
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((?P<type_talk>talks)) # We have a simple talk
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)
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(/lang/(.*?))? # The url may contain the language
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/(?P<name>\w+) # Here goes the name and then ".html"
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.*)$
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'''
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_TEST = {
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'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
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'md5': '4ea1dada91e4174b53dac2bb8ace429d',
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'info_dict': {
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'id': '102',
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'ext': 'mp4',
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'title': 'The illusion of consciousness',
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'description': ('Philosopher Dan Dennett makes a compelling '
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'argument that not only don\'t we understand our own '
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'consciousness, but that half the time our brains are '
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'actively fooling us.'),
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'uploader': 'Dan Dennett',
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}
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}
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_FORMATS_PREFERENCE = {
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'low': 1,
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'medium': 2,
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'high': 3,
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}
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def _extract_info(self, webpage):
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info_json = self._search_regex(r'q\("\w+.init",({.+})\)</script>',
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webpage, 'info json')
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return json.loads(info_json)
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def _real_extract(self, url):
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m = re.match(self._VALID_URL, url, re.VERBOSE)
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if m.group('type') == 'embed':
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desktop_url = m.group('proto') + 'www' + m.group('urlmain')
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return self.url_result(desktop_url, 'TED')
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name = m.group('name')
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if m.group('type_talk'):
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return self._talk_info(url, name)
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else:
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return self._playlist_videos_info(url, name)
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def _playlist_videos_info(self, url, name):
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'''Returns the videos of the playlist'''
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webpage = self._download_webpage(url, name,
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'Downloading playlist webpage')
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info = self._extract_info(webpage)
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playlist_info = info['playlist']
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playlist_entries = [
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self.url_result(u'http://www.ted.com/talks/' + talk['slug'], self.ie_key())
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for talk in info['talks']
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]
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return self.playlist_result(
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playlist_entries,
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playlist_id=compat_str(playlist_info['id']),
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playlist_title=playlist_info['title'])
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def _talk_info(self, url, video_name):
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webpage = self._download_webpage(url, video_name)
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self.report_extraction(video_name)
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talk_info = self._extract_info(webpage)['talks'][0]
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formats = [{
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'ext': 'mp4',
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'url': format_url,
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'format_id': format_id,
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'format': format_id,
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'preference': self._FORMATS_PREFERENCE.get(format_id, -1),
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} for (format_id, format_url) in talk_info['nativeDownloads'].items()]
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self._sort_formats(formats)
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video_id = compat_str(talk_info['id'])
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# subtitles
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video_subtitles = self.extract_subtitles(video_id, talk_info)
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if self._downloader.params.get('listsubtitles', False):
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self._list_available_subtitles(video_id, talk_info)
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return
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thumbnail = talk_info['thumb']
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if not thumbnail.startswith('http'):
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thumbnail = 'http://' + thumbnail
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return {
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'id': video_id,
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'title': talk_info['title'],
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'uploader': talk_info['speaker'],
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'thumbnail': thumbnail,
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'description': self._og_search_description(webpage),
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'subtitles': video_subtitles,
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'formats': formats,
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}
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def _get_available_subtitles(self, video_id, talk_info):
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languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
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if languages:
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sub_lang_list = {}
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for l in languages:
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url = 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/srt' % (video_id, l)
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sub_lang_list[l] = url
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return sub_lang_list
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else:
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self._downloader.report_warning(u'video doesn\'t have subtitles')
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return {}
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