I also modified yt_dlp. But I do not remember what I changed. Have fun

yt_dlp/extractor/m6.py

@@ -0,0 +1,22 @@
+from .common import InfoExtractor
+
+
+class M6IE(InfoExtractor):
+    IE_NAME = 'm6'
+    _VALID_URL = r'https?://(?:www\.)?m6\.fr/[^/]+/videos/(?P<id>\d+)-[^\.]+\.html'
+
+    _TEST = {
+        'url': 'http://www.m6.fr/emission-les_reines_du_shopping/videos/11323908-emeline_est_la_reine_du_shopping_sur_le_theme_ma_fete_d_8217_anniversaire.html',
+        'md5': '242994a87de2c316891428e0176bcb77',
+        'info_dict': {
+            'id': '11323908',
+            'ext': 'mp4',
+            'title': 'Emeline est la Reine du Shopping sur le thème « Ma fête d’anniversaire ! »',
+            'description': 'md5:1212ae8fb4b7baa4dc3886c5676007c2',
+            'duration': 100,
+        }
+    }
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        return self.url_result('6play:%s' % video_id, 'SixPlay', video_id)