1 from .common import InfoExtractor
9 class SubtitlesInfoExtractor(InfoExtractor):
11 def _list_available_subtitles(self, video_id):
12 """ outputs the available subtitles for the video """
13 sub_lang_list = self._get_available_subtitles(video_id)
14 sub_lang = ",".join(list(sub_lang_list.keys()))
15 self.to_screen(u'%s: Available subtitles for video: %s' %
18 def extract_subtitles(self, video_id, video_webpage=None):
19 """ returns {sub_lang: sub} or {} if subtitles not found """
20 if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
21 available_subs_list = self._get_available_subtitles(video_id)
22 elif self._downloader.params.get('writeautomaticsub', False):
23 available_subs_list = self._get_available_automatic_caption(video_id, video_webpage)
27 if not available_subs_list: # error, it didn't get the available subtitles
29 if self._downloader.params.get('allsubtitles', False):
30 sub_lang_list = available_subs_list
32 if self._downloader.params.get('subtitleslangs', False):
33 requested_langs = self._downloader.params.get('subtitleslangs')
34 elif 'en' in available_subs_list:
35 requested_langs = ['en']
37 requested_langs = [list(available_subs_list.keys())[0]]
40 for sub_lang in requested_langs:
41 if not sub_lang in available_subs_list:
42 self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
44 sub_lang_list[sub_lang] = available_subs_list[sub_lang]
47 for sub_lang, url in sub_lang_list.items():
48 subtitle = self._request_subtitle_url(sub_lang, url)
50 subtitles[sub_lang] = subtitle
53 def _request_subtitle_url(self, sub_lang, url):
54 """ makes the http request for the subtitle """
56 sub = self._download_webpage(url, None, note=False)
57 except ExtractorError as err:
58 self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
61 self._downloader.report_warning(u'Did not fetch video subtitles')
65 def _get_available_subtitles(self, video_id):
67 returns {sub_lang: url} or {} if not available
68 Must be redefined by the subclasses
72 def _get_available_automatic_caption(self, video_id, webpage):
74 returns {sub_lang: url} or {} if not available
75 Must be redefined by the subclasses that support automatic captions,
76 otherwise it will return {}
78 self._downloader.report_warning(u'Automatic Captions not supported by this server')