diff --git a/youtube_dl/extractor/w24at.py b/youtube_dl/extractor/w24at.py
index 7f8311065..eabe81349 100644
--- a/youtube_dl/extractor/w24at.py
+++ b/youtube_dl/extractor/w24at.py
@@ -9,7 +9,7 @@ class W24atIE(InfoExtractor):
     _VALID_URL = r'https://(?:www\.)?w24\.at/Video/.*/(?P<id>[0-9]+)'
     _TEST = {
         'url': 'https://www.w24.at/Video/Bewegung-macht-Spass-Folge-62-Kids-6/24828',
-        'md5': 'cc1bd6c334ed284a44528c6dbc9bc6ff',
+        'md5': '16e6f1c5d4a0d54d420e3d9d122660a1',
         'info_dict': {
             'id': '24828',
             'ext': 'mp4',
@@ -26,20 +26,19 @@ class W24atIE(InfoExtractor):
         media_server = self._html_search_regex(r'var\s*mediaServer\s*=\s*\{.*"vod"\s*:\s*"([^"]+)"',
                                                webpage, "vod", "ms02.w24.at")
         mp4_path = self._html_search_regex(r"src:.*\+ '([^']+)'.*type:'video/mp4'",
-                                           webpage, "mp4_video")
+                                           webpage, "mp4_path")
         m3u8_path = self._html_search_regex(r"src:.*\+ '([^']+)'.*type:'application/x-mpegURL'",
-                                            webpage, "m3u8")
+                                            webpage, "m3u8_path")
         formats = []
         if mp4_path:
-            formats.append({'url': "https://%s%s" % (media_server, mp4_path)})
-        formats.extend(self._extract_m3u8_formats("https://%s%s" % (media_server, m3u8_path), video_id, 'mp4', entry_protocol='m3u8_native'))
+            formats.append({'url': "https://%s%s" % (media_server, mp4_path), 'ext': 'mp4'})
+        formats.extend(self._extract_m3u8_formats("https://%s%s" % (media_server, m3u8_path), video_id, ext='mp4'))
         self._sort_formats(formats)
         return {
             'id': video_id,
             'title': re.sub(r'\s+-\sW24\s*$', '', self._og_search_title(webpage)),
             'description': self._og_search_description(webpage),
             'formats': formats,
-            'extension': 'mp4',
             'thumbnail': self._og_search_thumbnail(webpage),
             'uploader': self._og_search_property('site_name', webpage, fatal=False),
         }