[niconico] Catch deleted videos (closes #4064)

diff --git a/youtube_dl/extractor/niconico.py b/youtube_dl/extractor/niconico.py
index 62d5707fee87302b5f69544f768b1a56a5e3976b..45cbd4ee97b8cb66e3227d72e0ec7c3f238fa5f6 100644 (file)
--- a/youtube_dl/extractor/niconico.py
+++ b/youtube_dl/extractor/niconico.py
@@ -12,6 +12,7 @@ from ..utils import (
     unified_strdate,
     parse_duration,
     int_or_none,
+    ExtractorError,
 )
 
 
@@ -108,6 +109,9 @@ class NiconicoIE(InfoExtractor):
                 flv_info_request, video_id,
                 note='Downloading flv info', errnote='Unable to download flv info')
 
+        if 'deleted=' in flv_info_webpage:
+            raise ExtractorError('The video has been deleted.',
+                expected=True)
         video_real_url = compat_urlparse.parse_qs(flv_info_webpage)['url'][0]
 
         # Start extracting information