1 from .common import InfoExtractor
9 class SubtitlesInfoExtractor(InfoExtractor):
11 def _have_to_download_any_subtitles(self):
12 return any([self._downloader.params.get('writesubtitles', False),
13 self._downloader.params.get('writeautomaticsub')])
15 def _list_available_subtitles(self, video_id, webpage=None):
16 """ outputs the available subtitles for the video """
17 sub_lang_list = self._get_available_subtitles(video_id)
18 auto_captions_list = self._get_available_automatic_caption(video_id, webpage)
19 sub_lang = ",".join(list(sub_lang_list.keys()))
20 self.to_screen(u'%s: Available subtitles for video: %s' %
22 auto_lang = ",".join(auto_captions_list.keys())
23 self.to_screen(u'%s: Available automatic captions for video: %s' %
24 (video_id, auto_lang))
26 def extract_subtitles(self, video_id, video_webpage=None):
28 returns {sub_lang: sub} ,{} if subtitles not found or None if the
29 subtitles aren't requested.
31 if not self._have_to_download_any_subtitles:
33 available_subs_list = {}
34 if self._downloader.params.get('writeautomaticsub', False):
35 available_subs_list.update(self._get_available_automatic_caption(video_id, video_webpage))
36 if self._downloader.params.get('writesubtitles', False):
37 available_subs_list.update(self._get_available_subtitles(video_id))
39 if not available_subs_list: # error, it didn't get the available subtitles
41 if self._downloader.params.get('allsubtitles', False):
42 sub_lang_list = available_subs_list
44 if self._downloader.params.get('subtitleslangs', False):
45 requested_langs = self._downloader.params.get('subtitleslangs')
46 elif 'en' in available_subs_list:
47 requested_langs = ['en']
49 requested_langs = [list(available_subs_list.keys())[0]]
52 for sub_lang in requested_langs:
53 if not sub_lang in available_subs_list:
54 self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
56 sub_lang_list[sub_lang] = available_subs_list[sub_lang]
59 for sub_lang, url in sub_lang_list.items():
60 subtitle = self._request_subtitle_url(sub_lang, url)
62 subtitles[sub_lang] = subtitle
65 def _request_subtitle_url(self, sub_lang, url):
66 """ makes the http request for the subtitle """
68 sub = self._download_webpage(url, None, note=False)
69 except ExtractorError as err:
70 self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
73 self._downloader.report_warning(u'Did not fetch video subtitles')
77 def _get_available_subtitles(self, video_id):
79 returns {sub_lang: url} or {} if not available
80 Must be redefined by the subclasses
84 def _get_available_automatic_caption(self, video_id, webpage):
86 returns {sub_lang: url} or {} if not available
87 Must be redefined by the subclasses that support automatic captions,
88 otherwise it will return {}
90 self._downloader.report_warning(u'Automatic Captions not supported by this server')