From 86d68f906e21a6674f9f8676b22a47414b6c9fd2 Mon Sep 17 00:00:00 2001
From: Yen Chi Hsuan <yan12125@gmail.com>
Date: Wed, 14 Sep 2016 22:11:49 +0800
Subject: [PATCH] [bilibili] Fix extraction for videos without backup_url
 (#10647)

---
 ChangeLog                        | 1 +
 youtube_dl/extractor/bilibili.py | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 46eea0626..25c916eb2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 version <unreleased>
 
 Extractors
+* [bilibili] Fix extraction for specific videos (#10647)
 + [nbc] Add support for NBC Olympics (#10361)
 
 
diff --git a/youtube_dl/extractor/bilibili.py b/youtube_dl/extractor/bilibili.py
index 9f5c12ab9..2d174e6f9 100644
--- a/youtube_dl/extractor/bilibili.py
+++ b/youtube_dl/extractor/bilibili.py
@@ -67,7 +67,7 @@ class BiliBiliIE(InfoExtractor):
                 'url': durl['url'],
                 'filesize': int_or_none(durl['size']),
             }]
-            for backup_url in durl['backup_url']:
+            for backup_url in durl.get('backup_url', []):
                 formats.append({
                     'url': backup_url,
                     # backup URLs have lower priorities