3 from .common import InfoExtractor
13 class SubtitlesInfoExtractor(InfoExtractor):
15 def _list_available_subtitles(self, video_id):
16 """ outputs the available subtitles for the video """
17 sub_lang_list = self._get_available_subtitles(video_id)
18 sub_lang = ",".join(list(sub_lang_list.keys()))
19 self.to_screen(u'%s: Available subtitles for video: %s' %
22 def _extract_subtitles(self, video_id):
23 """ returns {sub_lang: sub} or {} if subtitles not found """
24 available_subs_list = self._get_available_subtitles(video_id)
25 if not available_subs_list: # error, it didn't get the available subtitles
27 if self._downloader.params.get('allsubtitles', False):
28 sub_lang_list = available_subs_list
30 if self._downloader.params.get('writesubtitles', False):
31 if self._downloader.params.get('subtitleslangs', False):
32 requested_langs = self._downloader.params.get('subtitleslangs')
33 elif 'en' in available_subs_list:
34 requested_langs = ['en']
36 requested_langs = [list(available_subs_list.keys())[0]]
39 for sub_lang in requested_langs:
40 if not sub_lang in available_subs_list:
41 self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
43 sub_lang_list[sub_lang] = available_subs_list[sub_lang]
46 for sub_lang, url in sub_lang_list.items():
47 subtitle = self._request_subtitle_url(sub_lang, url)
49 subtitles[sub_lang] = subtitle
52 def _request_subtitle_url(self, sub_lang, url):
53 """ makes the http request for the subtitle """
55 sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
56 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
57 self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
60 self._downloader.report_warning(u'Did not fetch video subtitles')
64 def _get_available_subtitles(self, video_id):
66 returns {sub_lang: url} or {} if not available
67 Must be redefined by the subclasses
71 def _request_automatic_caption(self, video_id, webpage):
73 returns {sub_lang: sub} or {} if not available
74 Must be redefined by the subclasses that support automatic captions,
75 otherwise it will return {}
77 self._downloader.report_warning(u'Automatic Captions not supported by this server')
80 def extract_subtitles(self, video_id, video_webpage=None):
82 Extract the subtitles and/or the automatic captions if requested.
83 Returns None or a dictionary in the format {sub_lang: sub}
85 video_subtitles = None
86 if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
87 video_subtitles = self._extract_subtitles(video_id)
88 elif self._downloader.params.get('writeautomaticsub', False):
89 video_subtitles = self._request_automatic_caption(video_id, video_webpage)
90 return video_subtitles