[peertube] reduce request amount if webpage downloaded

haruhi_dl/extractor/peertube.py

@@ -135,11 +135,13 @@ class PeerTubeSHIE(SelfhostedInfoExtractor):
             formats.append(f)
         self._sort_formats(formats)
 
+        description = None
+        if webpage:
+            description = self._og_search_description(webpage)
+        if not description:
             full_description = self._call_api(
                 host, video_id, 'description', note='Downloading description JSON',
                 fatal=False)
-
-        description = None
             if isinstance(full_description, dict):
                 description = str_or_none(full_description.get('description'))
         if not description: