diff --git a/youtube_dl/extractor/ninjastream.py b/youtube_dl/extractor/ninjastream.py
index ef172f73a..b5929b645 100644
--- a/youtube_dl/extractor/ninjastream.py
+++ b/youtube_dl/extractor/ninjastream.py
@@ -28,39 +28,50 @@ class NinjaStreamIE(InfoExtractor):
         Parses the URL into the video's URL.
         """
         # Parse the video id
-        video_id = self._search_regex(r'https?://(?:\w+\.)?ninjastream\.to/watch/([0-9a-zA-Z]+)',
-                                      url, 'video_id', fatal=False) or ''
+        video_id = self._search_regex(
+            r'https?://(?:\w+\.)?ninjastream\.to/watch/([0-9a-zA-Z]+)',
+            url, 'video_id', fatal=False, default='')
 
         # Get the hosted webpage
         webpage = self._download_webpage(url, video_id)
 
-        # The links to the m3u8 file will be buried and html encoded in the <file-watch-jwplayer> tag
-        jwplayer_link = self._html_search_regex(r'<file-watch-jwplayer (.*)', webpage,
-                                                'file-watch-jwplayer', fatal=False)
+        # The links to the m3u8 file will be buried and html encoded in
+        # the <file-watch-jwplayer> tag
+        jwplayer_link = self._html_search_regex(
+            r'<file-watch-jwplayer (.*)', webpage,
+            'file-watch-jwplayer', fatal=False)
 
         if jwplayer_link is None:
-            raise ExtractorError('NinjaStream: Failed to find the file information on the website')
+            raise ExtractorError(
+                'NinjaStream: Failed to find the file information on the website')
 
         # The v-bind:file will give us the correct title for the video
-        file_meta = self._parse_json(self._search_regex(r'v-bind:file=\"(\{.*?\})\"', jwplayer_link, video_id),
-                                     video_id, fatal=False)
+        file_meta = self._parse_json(
+            self._search_regex(r'v-bind:file=\"(\{.*?\})\"', jwplayer_link,
+                               video_id),
+            video_id, fatal=False)
 
         filename = video_id
-        if file_meta is not None and 'name' in file_meta:
-            filename = os.path.splitext(file_meta['name'])[0]
+        if file_meta is not None:
+            filename = os.path.splitext(file_meta.get('name'))[0]
 
         # The v-bind:stream will give us the location of the m3u8 file
-        stream_meta = self._parse_json(self._search_regex(r'v-bind:stream=\"(\{.*?\})\"', jwplayer_link, video_id),
-                                       video_id, fatal=False)
+        stream_meta = self._parse_json(
+            self._search_regex(r'v-bind:stream=\"(\{.*?\})\"',
+                               jwplayer_link, video_id),
+            video_id, fatal=False)
 
         if stream_meta is None:
-            raise ExtractorError('NinjaStream: Failed to find the m3u8 information on website')
+            raise ExtractorError(
+                'NinjaStream: Failed to find the m3u8 information on website')
 
-        url = '{0}/{1}/index.m3u8'.format(stream_meta['host'], stream_meta['hash'])
+        url = '{0}/{1}/index.m3u8'.format(stream_meta['host'],
+                                          stream_meta['hash'])
 
         # Get and parse the m3u8 information
-        formats = self._extract_m3u8_formats(url, video_id, 'mp4', entry_protocol='m3u8_native',
-                                             m3u8_id='hls', fatal=False)
+        formats = self._extract_m3u8_formats(
+            url, video_id, 'mp4', entry_protocol='m3u8_native',
+            m3u8_id='hls', fatal=False)
 
         return {
             'formats': formats,