[youtube:api] Prefer minified JSON response

Authored-by: coletdjnz

yt_dlp/extractor/youtube.py

@@ -458,7 +458,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             'https://%s/youtubei/v1/%s' % (api_hostname or self._get_innertube_host(default_client), ep),
             video_id=video_id, fatal=fatal, note=note, errnote=errnote,
             data=json.dumps(data).encode('utf8'), headers=real_headers,
-            query={'key': api_key or self._extract_api_key()})
+            query={'key': api_key or self._extract_api_key(), 'prettyPrint': 'false'})
 
     def extract_yt_initial_data(self, item_id, webpage, fatal=True):
         data = self._search_regex(