Add the option "--write-auto-sub" to download automatic subtitles from Youtube

Now automatic subtitles are only downloaded if the option is given.
(closes #903)

1 files changed, 7 insertions, 8 deletions

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index de653cb3d..6728f5418 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -454,14 +454,13 @@ class YoutubeIE(InfoExtractor):
             if video_subtitles:
                 (sub_error, sub_lang, sub) = video_subtitles[0]
                 if sub_error:
-                    # We try with the automatic captions
-                    video_subtitles = self._request_automatic_caption(video_id, video_webpage)
-                    (sub_error_auto, sub_lang, sub) = video_subtitles[0]
-                    if sub is not None:
-                        pass
-                    else:
-                        # We report the original error
-                        self._downloader.report_warning(sub_error)
+                    self._downloader.report_warning(sub_error)
+        
+        if self._downloader.params.get('writeautomaticsub', False):
+            video_subtitles = self._request_automatic_caption(video_id, video_webpage)
+            (sub_error, sub_lang, sub) = video_subtitles[0]
+            if sub_error:
+                self._downloader.report_warning(sub_error)
 
         if self._downloader.params.get('allsubtitles', False):
             video_subtitles = self._extract_all_subtitles(video_id)