From 8678b341168432d02388fb244adeee6afa93aa2f Mon Sep 17 00:00:00 2001
From: DarkCat09 <gh@dc09.ru>
Date: Sun, 30 Mar 2025 15:55:27 +0400
Subject: [PATCH] feat: parse age limit

---
 yt_dlp/extractor/vk.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/yt_dlp/extractor/vk.py b/yt_dlp/extractor/vk.py
index 2708da6495..c35d123536 100644
--- a/yt_dlp/extractor/vk.py
+++ b/yt_dlp/extractor/vk.py
@@ -896,6 +896,17 @@ def _parse_track_meta(self, meta, track_id=None):
         info['duration'] = int_or_none(meta[5]) if len_ >= 5 else None
         info['thumbnails'] = [{'url': meta[14]}] if len_ >= 14 else []
 
+        # meta[30] is 2 bits
+        #    most significant: isExplicit
+        #   least significant: isForeignAgent
+        # i. e.
+        #   00 = safe
+        #   01 = marked by RKN as "foreign agent"
+        #   10 = explicit lyrics
+        #   11 = both E lyrics and "foreign agent"
+        if len_ >= 30 and meta[30]:
+            info['age_limit'] = 18
+
         return info
 
     def _real_extract(self, url):