Allow empty titles because they do appear in some videos (fixes issue #53)

diff --git a/youtube-dl b/youtube-dl
index 03609e22ca8d8cde4f1a92db1fbb0f81a3de57cb..f57343ea80f17cfa7523f4be91a5fc5f57c02278 100755 (executable)
--- a/youtube-dl
+++ b/youtube-dl
@@ -719,7 +719,7 @@ class YoutubeIE(InfoExtractor):
                        video_uploader = urllib.unquote(mobj.group(1))
 
                        # title
-                       mobj = re.search(r'(?m)&title=([^&]+)(?:&|$)', video_info_webpage)
+                       mobj = re.search(r'(?m)&title=([^&]*)(?:&|$)', video_info_webpage)
                        if mobj is None:
                                self._downloader.trouble(u'ERROR: unable to extract video title')
                                return