[pluzz] Fix mobile support and modernize (Closes #7305)

youtube_dl/extractor/francetv.py

@@ -105,15 +105,21 @@ class FranceTVBaseInfoExtractor(InfoExtractor):
 
 class PluzzIE(FranceTVBaseInfoExtractor):
     IE_NAME = 'pluzz.francetv.fr'
-    _VALID_URL = r'https?://(?:m\.)?pluzz\.francetv\.fr/videos/(.*?)\.html'
+    _VALID_URL = r'https?://(?:m\.)?pluzz\.francetv\.fr/videos/(?P<id>.+?)\.html'
 
     # Can't use tests, videos expire in 7 days
 
     def _real_extract(self, url):
-        title = re.match(self._VALID_URL, url).group(1)
-        webpage = self._download_webpage(url, title)
+        display_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, display_id)
+
+        video_id = self._html_search_meta(
+            'id_video', webpage, 'video id', default=None)
+        if not video_id:
             video_id = self._search_regex(
-            r'data-diffusion="(\d+)"', webpage, 'ID')
+            r'data-diffusion=["\'](\d+)', webpage, 'video id')
+
         return self._extract_video(video_id, 'Pluzz')