From 02ac14e790ad940ef518156b5f50a3f64bf07365 Mon Sep 17 00:00:00 2001
From: bernardwiesner <linkbeni@yahoo.com>
Date: Tue, 2 Jun 2026 14:13:43 +0900
Subject: [PATCH] MP3: detect headerless VBR after parsing finishes

---
 Source/MediaInfo/Audio/File_Mpega.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Source/MediaInfo/Audio/File_Mpega.cpp b/Source/MediaInfo/Audio/File_Mpega.cpp
index ec552a9d33..d22810e095 100644
--- a/Source/MediaInfo/Audio/File_Mpega.cpp
+++ b/Source/MediaInfo/Audio/File_Mpega.cpp
@@ -458,6 +458,14 @@ void File_Mpega::Streams_Finish()
         }
     }
 
+    //VBR detection without header
+    //BitRate_Count may have changed after Streams_Fill() sampled the first frames.
+    if (VBR_Frames==0)
+    {
+        if (BitRate_Count.size()>1)
+            BitRate_Mode=__T("VBR");
+    }
+
     //Bitrate calculation if VBR
     int64u FrameCount=0;
     if (VBR_Frames>0)