diff --git a/yt_dlp/extractor/pialive.py b/yt_dlp/extractor/pialive.py
index 9399135b91..4f2ee7d043 100644
--- a/yt_dlp/extractor/pialive.py
+++ b/yt_dlp/extractor/pialive.py
@@ -43,8 +43,8 @@ class PiaLiveIE(InfoExtractor):
 
     def _extract_vars(self, variable, html):
         return self._search_regex(
-            rf'(?:var|const)\s+{variable}\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1',
-            html, 'variable', group='value', default=None)
+            rf'(?:var|const|let)\s+{variable}\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1',
+            html, f'variable {variable}', group='value')
 
     def _real_extract(self, url):
         video_key = self._match_id(url)
@@ -53,13 +53,6 @@ class PiaLiveIE(InfoExtractor):
         program_code = self._extract_vars('programCode', webpage)
         article_code = self._extract_vars('articleCode', webpage)
 
-        prod_configure = self._download_webpage(
-            self.PLAYER_ROOT_URL + self._search_regex(
-                r'<script[^>]+src=(["\'])(?P<url>/statics/js/s_prod\?(?:(?!\1).)+)\1',
-                webpage, 'prod configure page url', group='url'),
-            program_code, headers={'Referer': self.PLAYER_ROOT_URL},
-            note='Fetching prod configure page', errnote='Unable to fetch prod configure page')
-
         payload, content_type = multipart_encode({
             'play_url': video_key,
             'api_key': self._extract_vars('APIKEY', prod_configure)})
diff --git a/yt_dlp/extractor/piaulizaportal.py b/yt_dlp/extractor/piaulizaportal.py
index e8f38f8fc1..7120636981 100644
--- a/yt_dlp/extractor/piaulizaportal.py
+++ b/yt_dlp/extractor/piaulizaportal.py
@@ -4,9 +4,7 @@ from ..utils.traversal import traverse_obj
 
 
 class PIAULIZAPortalAPIIE(InfoExtractor):
-    IE_DESC = 'https://player-api.p.uliza.jp - PIA ULIZA m3u8'
-
-    _VALID_URL = r'https://player-api\.p\.uliza\.jp/v1/players/(?P<id>.*)'
+    _VALID_URL = r'https://player-api\.p\.uliza\.jp/v1/players/[^?#]+\?(?:[^#]*&)?name=(?P<id>[^#&]+)'
     _TESTS = [
         {
             'url': 'https://player-api.p.uliza.jp/v1/players/timeshift-disabled/pia/admin?type=normal&playerobjectname=ulizaPlayer&name=livestream01_dvr&repeatable=true',
@@ -15,10 +13,6 @@ class PIAULIZAPortalAPIIE(InfoExtractor):
                 'title': '88f3109a-f503-4d0f-a9f7-9f39ac745d84',
                 'live_status': 'was_live',
             },
-            'params': {
-                'skip_download': True,
-                'ignore_no_formats_error': True,
-            },
         },
         {
             'url': 'https://player-api.p.uliza.jp/v1/players/uliza_jp_gallery_normal/promotion/admin?type=presentation&name=cookings&targetid=player1',
@@ -47,15 +41,15 @@ class PIAULIZAPortalAPIIE(InfoExtractor):
     ]
 
     def _real_extract(self, url):
-        tmp_video_id = self._search_regex(r'&name=([^&]+)', self._match_id(url), 'video id', default='unknown')
+        display_id = self._match_id(url)
         player_data = self._download_webpage(
             url, tmp_video_id, headers={'Referer': 'https://player-api.p.uliza.jp/'},
             note='Fetching player data', errnote='Unable to fetch player data',
         )
 
-        m3u8_url = self._search_regex(
-            r'["\'](https://vms-api\.p\.uliza\.jp/v1/prog-index\.m3u8[^"\']+)', player_data,
-            'm3u8 url', default=None)
+        player_data = self._search_json(
+            r'var\s+params\s*=', player_js, 'json', display_id,
+            transform_source=js_to_json)
 
         video_id = self._search_regex(r'&?ss=([\da-f]{8}-(?:[\da-f]{4}-){3}[\da-f]{12})&?', m3u8_url, 'video id', default=tmp_video_id)