From a59abe0636dc49b22a67246afe35613571b86f05 Mon Sep 17 00:00:00 2001
From: bashonly <88596187+bashonly@users.noreply.github.com>
Date: Sun, 23 Feb 2025 02:31:00 -0600
Subject: [PATCH] [ie/instagram] Fix extraction of older private posts (#12451)

Authored by: bashonly
---
 yt_dlp/extractor/instagram.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/yt_dlp/extractor/instagram.py b/yt_dlp/extractor/instagram.py
index 3d4055012..94a685cd8 100644
--- a/yt_dlp/extractor/instagram.py
+++ b/yt_dlp/extractor/instagram.py
@@ -33,8 +33,10 @@ def _pk_to_id(media_id):
 
 
 def _id_to_pk(shortcode):
-    """Covert a shortcode to a numeric value"""
-    return decode_base_n(shortcode[:11], table=_ENCODING_CHARS)
+    """Convert a shortcode to a numeric value"""
+    if len(shortcode) > 28:
+        shortcode = shortcode[:-28]
+    return decode_base_n(shortcode, table=_ENCODING_CHARS)
 
 
 class InstagramBaseIE(InfoExtractor):