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-rwxr-xr-xyoutube_dl/InfoExtractors.py7
1 files changed, 5 insertions, 2 deletions
diff --git a/youtube_dl/InfoExtractors.py b/youtube_dl/InfoExtractors.py
index 17e0f8323..8d228d40d 100755
--- a/youtube_dl/InfoExtractors.py
+++ b/youtube_dl/InfoExtractors.py
@@ -732,8 +732,11 @@ class YoutubeIE(InfoExtractor):
for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','):
url_data = compat_parse_qs(url_data_str)
if 'itag' in url_data and 'url' in url_data:
- url = url_data['url'][0] + '&signature=' + url_data['sig'][0]
- if not 'ratebypass' in url: url += '&ratebypass=yes'
+ url = url_data['url'][0]
+ if 'sig' in url_data:
+ url += '&signature=' + url_data['sig'][0]
+ if 'ratebypass' not in url:
+ url += '&ratebypass=yes'
url_map[url_data['itag'][0]] = url
format_limit = self._downloader.params.get('format_limit', None)