[extractor/common] Use playlist id as default title

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 9b4775e0a4bf902f8e77e050ba6679a24b0c6534..be91e03e9f1d69916d8e06858f2a2dc012fa9c09 100644 (file)
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -1157,7 +1157,7 @@ class InfoExtractor(object):
         entries = []
         for track in playlist.findall(xpath_with_ns('./xspf:trackList/xspf:track', NS_MAP)):
             title = xpath_text(
-                track, xpath_with_ns('./xspf:title', NS_MAP), 'title')
+                track, xpath_with_ns('./xspf:title', NS_MAP), 'title', default=playlist_id)
             description = xpath_text(
                 track, xpath_with_ns('./xspf:annotation', NS_MAP), 'description')
             thumbnail = xpath_text(