[crunchyroll:beta] Use anonymous access instead of redirecting

Closes yt-dlp#4692

yt_dlp/extractor/crunchyroll.py

@@ -720,15 +720,27 @@ class CrunchyrollBetaBaseIE(CrunchyrollBaseIE):
 
     def _get_params(self, lang):
         if not CrunchyrollBetaBaseIE.params:
+            if self._get_cookies(f'https://beta.crunchyroll.com/{lang}').get('etp_rt'):
+                auth = 'cookie'
+            else:
+                auth = 'client id'
+
             initial_state, app_config = self._get_beta_embedded_json(self._download_webpage(
                 f'https://beta.crunchyroll.com/{lang}', None, note='Retrieving main page'), None)
             api_domain = app_config['cxApiParams']['apiDomain']
-            basic_token = str(base64.b64encode(('%s:' % app_config['cxApiParams']['accountAuthClientId']).encode('ascii')), 'ascii')
+
+            if auth == 'client id':
+                client_id = app_config['cxApiParams']['anonClientId']
+                grant_type = 'client_id'
+            else:
+                client_id = app_config['cxApiParams']['accountAuthClientId']
+                grant_type = 'etp_rt_cookie'
+
             auth_response = self._download_json(
-                f'{api_domain}/auth/v1/token', None, note='Authenticating with cookie',
+                f'{api_domain}/auth/v1/token', None, note=f'Authenticating with {auth}',
                 headers={
-                    'Authorization': 'Basic ' + basic_token
-                }, data='grant_type=etp_rt_cookie'.encode('ascii'))
+                    'Authorization': 'Basic ' + str(base64.b64encode(('%s:' % client_id).encode('ascii')), 'ascii')
+                }, data=f'grant_type={grant_type}'.encode('ascii'))
             policy_response = self._download_json(
                 f'{api_domain}/index/v2', None, note='Retrieving signed policy',
                 headers={
@@ -747,21 +759,6 @@ def _get_params(self, lang):
             CrunchyrollBetaBaseIE.params = (api_domain, bucket, params)
         return CrunchyrollBetaBaseIE.params
 
-    def _redirect_from_beta(self, url, lang, internal_id, display_id, is_episode, iekey):
-        initial_state, app_config = self._get_beta_embedded_json(self._download_webpage(url, display_id), display_id)
-        content_data = initial_state['content']['byId'][internal_id]
-        if is_episode:
-            video_id = content_data['external_id'].split('.')[1]
-            series_id = content_data['episode_metadata']['series_slug_title']
-        else:
-            series_id = content_data['slug_title']
-        series_id = re.sub(r'-{2,}', '-', series_id)
-        url = f'https://www.crunchyroll.com/{lang}{series_id}'
-        if is_episode:
-            url = url + f'/{display_id}-{video_id}'
-        self.to_screen(f'{display_id}: Not logged in. Redirecting to non-beta site - {url}')
-        return self.url_result(url, iekey, display_id)
-
 
 class CrunchyrollBetaIE(CrunchyrollBetaBaseIE):
     IE_NAME = 'crunchyroll:beta'
@@ -800,10 +797,6 @@ class CrunchyrollBetaIE(CrunchyrollBetaBaseIE):
 
     def _real_extract(self, url):
         lang, internal_id, display_id = self._match_valid_url(url).group('lang', 'id', 'display_id')
-
-        if not self._get_cookies(url).get('etp_rt'):
-            return self._redirect_from_beta(url, lang, internal_id, display_id, True, CrunchyrollIE.ie_key())
-
         api_domain, bucket, params = self._get_params(lang)
 
         episode_response = self._download_json(
@@ -897,10 +890,6 @@ class CrunchyrollBetaShowIE(CrunchyrollBetaBaseIE):
 
     def _real_extract(self, url):
         lang, internal_id, display_id = self._match_valid_url(url).group('lang', 'id', 'display_id')
-
-        if not self._get_cookies(url).get('etp_rt'):
-            return self._redirect_from_beta(url, lang, internal_id, display_id, False, CrunchyrollShowPlaylistIE.ie_key())
-
         api_domain, bucket, params = self._get_params(lang)
 
         series_response = self._download_json(