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from __future__ import unicode_literals
import json
import re
from .subtitles import SubtitlesInfoExtractor
from ..utils import (
RegexNotFoundError,
)
class TEDIE(SubtitlesInfoExtractor):
_VALID_URL=r'''(?x)http://www\.ted\.com/
(
((?P<type_playlist>playlists)/(?P<playlist_id>\d+)) # We have a playlist
|
((?P<type_talk>talks)) # We have a simple talk
)
(/lang/(.*?))? # The url may contain the language
/(?P<name>\w+) # Here goes the name and then ".html"
'''
_TEST = {
'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
'file': '102.mp4',
'md5': '4ea1dada91e4174b53dac2bb8ace429d',
'info_dict': {
'title': 'The illusion of consciousness',
'description': 'Philosopher Dan Dennett makes a compelling argument that not only don\'t we understand our own consciousness, but that half the time our brains are actively fooling us.',
'uploader': 'Dan Dennett',
}
}
_FORMATS_PREFERENCE = {
'low': 1,
'medium': 2,
'high': 3,
}
def _real_extract(self, url):
m=re.match(self._VALID_URL, url, re.VERBOSE)
if m.group('type_talk'):
return self._talk_info(url)
else :
playlist_id=m.group('playlist_id')
name=m.group('name')
self.to_screen(u'Getting info of playlist %s: "%s"' % (playlist_id,name))
return [self._playlist_videos_info(url,name,playlist_id)]
def _playlist_videos_info(self, url, name, playlist_id):
'''Returns the videos of the playlist'''
webpage = self._download_webpage(
url, playlist_id, 'Downloading playlist webpage')
matches = re.finditer(
r'<p\s+class="talk-title[^"]*"><a\s+href="(?P<talk_url>/talks/[^"]+\.html)">[^<]*</a></p>',
webpage)
playlist_title = self._html_search_regex(r'div class="headline">\s*?<h1>\s*?<span>(.*?)</span>',
webpage, 'playlist title')
playlist_entries = [
self.url_result(u'http://www.ted.com' + m.group('talk_url'), 'TED')
for m in matches
]
return self.playlist_result(
playlist_entries, playlist_id=playlist_id, playlist_title=playlist_title)
def _talk_info(self, url, video_id=0):
"""Return the video for the talk in the url"""
m = re.match(self._VALID_URL, url)
video_name = m.group('name')
webpage = self._download_webpage(url, video_id, 'Downloading \"%s\" page' % video_name)
self.report_extraction(video_name)
info_json = self._search_regex(r'"talkPage.init",({.+})\)</script>', webpage, 'info json')
info = json.loads(info_json)
talk_info = info['talks'][0]
formats = [{
'ext': 'mp4',
'url': format_url,
'format_id': format_id,
'format': format_id,
'preference': self._FORMATS_PREFERENCE.get(format_id, -1),
} for (format_id, format_url) in talk_info['nativeDownloads'].items()]
self._sort_formats(formats)
video_id = talk_info['id']
# subtitles
video_subtitles = self.extract_subtitles(video_id, talk_info)
if self._downloader.params.get('listsubtitles', False):
self._list_available_subtitles(video_id, talk_info)
return
return {
'id': video_id,
'title': talk_info['title'],
'uploader': talk_info['speaker'],
'thumbnail': talk_info['thumb'],
'description': self._og_search_description(webpage),
'subtitles': video_subtitles,
'formats': formats,
}
def _get_available_subtitles(self, video_id, talk_info):
languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
if languages:
sub_lang_list = {}
for l in languages:
url = 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/srt' % (video_id, l)
sub_lang_list[l] = url
return sub_lang_list
else:
self._downloader.report_warning(u'video doesn\'t have subtitles')
return {}
|
