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-rwxr-xr-xyoutube_dl/InfoExtractors.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/InfoExtractors.py b/youtube_dl/InfoExtractors.py
index 8d228d40d..ed2beac78 100755
--- a/youtube_dl/InfoExtractors.py
+++ b/youtube_dl/InfoExtractors.py
@@ -420,7 +420,7 @@ class YoutubeIE(InfoExtractor):
def _request_automatic_caption(self, video_id, webpage):
"""We need the webpage for getting the captions url, pass it as an
argument to speed up the process."""
- sub_lang = self._downloader.params.get('subtitleslang')
+ sub_lang = self._downloader.params.get('subtitleslang') or 'en'
sub_format = self._downloader.params.get('subtitlesformat')
self.to_screen(u'%s: Looking for automatic captions' % video_id)
mobj = re.search(r';ytplayer.config = ({.*?});', webpage)