From 9e84a71aa05c18383f9160a556c6aee572f0ae2f Mon Sep 17 00:00:00 2001
From: Junyi Lou <15688661+junyilou@users.noreply.github.com>
Date: Sun, 17 Aug 2025 20:24:13 +0800
Subject: [PATCH] Fixes #12476

---
 yt_dlp/extractor/bilibili.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/yt_dlp/extractor/bilibili.py b/yt_dlp/extractor/bilibili.py
index 9e4bdb871c..0f88af9657 100644
--- a/yt_dlp/extractor/bilibili.py
+++ b/yt_dlp/extractor/bilibili.py
@@ -646,6 +646,9 @@ class BiliBiliIE(BilibiliBaseIE):
 
         initial_state = self._search_json(r'window\.__INITIAL_STATE__\s*=', webpage, 'initial state', video_id, default=None)
         if not initial_state:
+            if traverse_obj(self._search_json(
+                    r'<script\s*>\s*window\._riskdata_\s*=', webpage, 'risk data', video_id, default=None), 'v_voucher'):
+                raise ExtractorError('You are downloading too frequently, please wait and try later', expected=True)
             query = {'platform': 'web'}
             prefix = prefix.upper()
             if prefix == 'BV':