[wimp] Fix youtube extraction (Closes #5690)

youtube_dl/extractor/wimp.py

@@ -37,7 +37,8 @@ class WimpIE(InfoExtractor):
         video_id = mobj.group(1)
         webpage = self._download_webpage(url, video_id)
         video_url = self._search_regex(
-            r"[\"']file[\"']\s*[:,]\s*[\"'](.+?)[\"']", webpage, 'video URL')
+            [r"[\"']file[\"']\s*[:,]\s*[\"'](.+?)[\"']", r"videoId\s*:\s*[\"']([^\"']+)[\"']"],
+            webpage, 'video URL')
         if YoutubeIE.suitable(video_url):
             self.to_screen('Found YouTube video')
             return {