ext = determine_ext(src, None)
             if ext == 'f4m':
                 formats.extend(self._extract_f4m_formats(
-                    src + '?hdcore=3.7.0&plugin=aasp-3.7.0.39.44', video_id, f4m_id='hds'))
+                    src + '?hdcore=3.7.0&plugin=aasp-3.7.0.39.44', video_id,
+                    f4m_id='hds', fatal=False))
             elif ext == 'm3u8':
                 formats.extend(self._extract_m3u8_formats(
-                    src, video_id, 'mp4', m3u8_id='hls', entry_protocol='m3u8_native'))
+                    src, video_id, 'mp4', m3u8_id='hls',
+                    entry_protocol='m3u8_native', fatal=False))
             else:
                 quality = f.get('quality')
                 ff = {
         'info_dict': {
             'id': 'livestream217',
             'ext': 'flv',
-            'title': 're:^NDR Fernsehen Niedersachsen \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
+            'title': r're:^NDR Fernsehen Niedersachsen \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
             'is_live': True,
             'upload_date': '20150910',
         },
         'info_dict': {
             'id': 'webradioweltweit100',
             'ext': 'mp3',
-            'title': 're:^N-JOY Weltweit \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
+            'title': r're:^N-JOY Weltweit \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
             'is_live': True,
             'uploader': 'njoy',
             'upload_date': '20150810',