[youtube] Support automatic captions with original language different from English...

[youtube-dl] / youtube_dl / extractor / subtitles.py

diff --git a/youtube_dl/extractor/subtitles.py b/youtube_dl/extractor/subtitles.py
index 9a3c54b65a271bba680397a950b0ad06701f7fed..a6780f1763440fe04a8ee135a07975da90bd6649 100644 (file)
--- a/youtube_dl/extractor/subtitles.py
+++ b/youtube_dl/extractor/subtitles.py
@@ -15,28 +15,33 @@ class SubtitlesInfoExtractor(InfoExtractor):
         self.to_screen(u'%s: Available subtitles for video: %s' %
                        (video_id, sub_lang))
 
-    def _extract_subtitles(self, video_id):
+    def extract_subtitles(self, video_id, video_webpage=None):
         """ returns {sub_lang: sub} or {} if subtitles not found """
-        available_subs_list = self._get_available_subtitles(video_id)
+        if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
+            available_subs_list = self._get_available_subtitles(video_id)
+        elif self._downloader.params.get('writeautomaticsub', False):
+            available_subs_list = self._get_available_automatic_caption(video_id, video_webpage)
+        else:
+            return None
+
         if not available_subs_list:  # error, it didn't get the available subtitles
             return {}
         if self._downloader.params.get('allsubtitles', False):
             sub_lang_list = available_subs_list
         else:
-            if self._downloader.params.get('writesubtitles', False):
-                if self._downloader.params.get('subtitleslangs', False):
-                    requested_langs = self._downloader.params.get('subtitleslangs')
-                elif 'en' in available_subs_list:
-                    requested_langs = ['en']
-                else:
-                    requested_langs = [list(available_subs_list.keys())[0]]
+            if self._downloader.params.get('subtitleslangs', False):
+                requested_langs = self._downloader.params.get('subtitleslangs')
+            elif 'en' in available_subs_list:
+                requested_langs = ['en']
+            else:
+                requested_langs = [list(available_subs_list.keys())[0]]
 
-                sub_lang_list = {}
-                for sub_lang in requested_langs:
-                    if not sub_lang in available_subs_list:
-                        self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
-                        continue
-                    sub_lang_list[sub_lang] = available_subs_list[sub_lang]
+            sub_lang_list = {}
+            for sub_lang in requested_langs:
+                if not sub_lang in available_subs_list:
+                    self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
+                    continue
+                sub_lang_list[sub_lang] = available_subs_list[sub_lang]
 
         subtitles = {}
         for sub_lang, url in sub_lang_list.items():
@@ -64,23 +69,11 @@ class SubtitlesInfoExtractor(InfoExtractor):
         """
         pass
 
-    def _request_automatic_caption(self, video_id, webpage):
+    def _get_available_automatic_caption(self, video_id, webpage):
         """
-        returns {sub_lang: sub} or {} if not available
+        returns {sub_lang: url} or {} if not available
         Must be redefined by the subclasses that support automatic captions,
         otherwise it will return {}
         """
         self._downloader.report_warning(u'Automatic Captions not supported by this server')
         return {}
-
-    def extract_subtitles(self, video_id, video_webpage=None):
-        """
-        Extract the subtitles and/or the automatic captions if requested.
-        Returns None or a dictionary in the format {sub_lang: sub}
-        """
-        video_subtitles = None
-        if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
-            video_subtitles = self._extract_subtitles(video_id)
-        elif self._downloader.params.get('writeautomaticsub', False):
-            video_subtitles = self._request_automatic_caption(video_id, video_webpage)
-        return video_subtitles