From 762155cc90754fc29c68bf0f0256988f37862c3b Mon Sep 17 00:00:00 2001
From: Yen Chi Hsuan <yan12125@gmail.com>
Date: Thu, 23 Apr 2015 18:07:09 +0800
Subject: [PATCH] [ustream] Checking errors

---
 youtube_dl/extractor/ustream.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/youtube_dl/extractor/ustream.py b/youtube_dl/extractor/ustream.py
index d559e228a9..f8893b6cdc 100644
--- a/youtube_dl/extractor/ustream.py
+++ b/youtube_dl/extractor/ustream.py
@@ -7,6 +7,7 @@
 from ..compat import (
     compat_urlparse,
 )
+from ..utils import ExtractorError
 
 
 class UstreamIE(InfoExtractor):
@@ -47,6 +48,9 @@ def _real_extract(self, url):
                 'autoplay': False,
             }), video_id)
 
+        if 'error' in params:
+            raise ExtractorError(params['error']['message'], expected=True)
+
         video_url = params['flv']
 
         webpage = self._download_webpage(url, video_id)