diff --git a/youtube_dl/extractor/twitch.py b/youtube_dl/extractor/twitch.py
index dc5ff29c3..0500e33a6 100644
--- a/youtube_dl/extractor/twitch.py
+++ b/youtube_dl/extractor/twitch.py
@@ -317,7 +317,7 @@ class TwitchVodIE(TwitchItemBaseIE):
             'Downloading %s access token' % self._ITEM_TYPE)
 
         formats = self._extract_m3u8_formats(
-            '%s/vod/%s?%s' % (
+            '%s/vod/%s.m3u8?%s' % (
                 self._USHER_BASE, item_id,
                 compat_urllib_parse_urlencode({
                     'allow_source': 'true',
diff --git a/youtube_dl/extractor/vzaar.py b/youtube_dl/extractor/vzaar.py
index 6000671c3..3336e6c15 100644
--- a/youtube_dl/extractor/vzaar.py
+++ b/youtube_dl/extractor/vzaar.py
@@ -32,6 +32,10 @@ class VzaarIE(InfoExtractor):
             'ext': 'mp3',
             'title': 'MP3',
         },
+    }, {
+        # with null videoTitle
+        'url': 'https://view.vzaar.com/20313539/download',
+        'only_matching': True,
     }]
 
     @staticmethod
@@ -45,7 +49,7 @@ class VzaarIE(InfoExtractor):
         video_data = self._download_json(
             'http://view.vzaar.com/v2/%s/video' % video_id, video_id)
 
-        title = video_data['videoTitle']
+        title = video_data.get('videoTitle') or video_id
 
         formats = []