diff --git a/src/filters/parser/MatroskaSplitter/MatroskaFile.cpp b/src/filters/parser/MatroskaSplitter/MatroskaFile.cpp
index fdc619bbac..d3c5c9ae6c 100644
--- a/src/filters/parser/MatroskaSplitter/MatroskaFile.cpp
+++ b/src/filters/parser/MatroskaSplitter/MatroskaFile.cpp
@@ -1,6 +1,6 @@
 /*
  * (C) 2003-2006 Gabest
- * (C) 2006-2023 see Authors.txt
+ * (C) 2006-2024 see Authors.txt
  *
  * This file is part of MPC-BE.
  *
@@ -461,6 +461,9 @@ HRESULT TrackEntry::Parse(CMatroskaNode* pMN0)
 	case 0x22B59C:
 		Language.Parse(pMN);
 		break;
+	case 0x22B59D:
+		LanguageBCP47.Parse(pMN);
+		break;
 	case 0x86:
 		CodecID.Parse(pMN);
 		break;
@@ -1188,6 +1191,9 @@ HRESULT ChapterDisplay::Parse(CMatroskaNode* pMN0)
 	case 0x437C:
 		ChapLanguage.Parse(pMN);
 		break;
+	case 0x437D:
+		ChapLanguageBCP47.Parse(pMN);
+		break;
 	case 0x437E:
 		ChapCountry.Parse(pMN);
 		break;
@@ -1208,6 +1214,7 @@ HRESULT Tag::Parse(CMatroskaNode* pMN0)
 	BeginChunk
 	case 0x67C8:
 		SimpleTag.Parse(pMN);
+		break;
 	case 0x63C0:
 		Targets.Parse(pMN);
 		break;
@@ -1223,6 +1230,9 @@ HRESULT SimpleTag::Parse(CMatroskaNode* pMN0)
 	case 0x447A:
 		TagLanguage.Parse(pMN);
 		break;
+	case 0x447B:
+		TagLanguageBCP47.Parse(pMN);
+		break;
 	case 0x4487:
 		TagString.Parse(pMN);
 		break;
diff --git a/src/filters/parser/MatroskaSplitter/MatroskaFile.h b/src/filters/parser/MatroskaSplitter/MatroskaFile.h
index ef7b81644a..bc106f8a60 100644
--- a/src/filters/parser/MatroskaSplitter/MatroskaFile.h
+++ b/src/filters/parser/MatroskaSplitter/MatroskaFile.h
@@ -1,6 +1,6 @@
 /*
  * (C) 2003-2006 Gabest
- * (C) 2006-2023 see Authors.txt
+ * (C) 2006-2024 see Authors.txt
  *
  * This file is part of MPC-BE.
  *
@@ -461,7 +461,8 @@ namespace MatroskaReader
 		CUInt FlagEnabled, FlagDefault, FlagLacing, FlagForced;
 		CUInt MinCache, MaxCache;
 		CUTF8 Name;
-		CANSI Language;
+		CANSI Language{ "eng" };
+		CANSI LanguageBCP47;
 		CBinary CodecID;
 		CBinary CodecPrivate;
 		CUTF8 CodecName;
@@ -488,7 +489,6 @@ namespace MatroskaReader
 			FlagForced.Set(0);
 			MinCache.Set(0);
 			TrackTimecodeScale.Set(1.0f);
-			Language.CStringA::operator = ("eng");
 			MaxBlockAdditionID.Set(0);
 			CodecDecodeAll.Set(1);
 		}
@@ -574,12 +574,10 @@ namespace MatroskaReader
 	{
 	public:
 		CUTF8 ChapString;
-		CANSI ChapLanguage;
+		CANSI ChapLanguage{ "eng" };
+		CANSI ChapLanguageBCP47;
 		CANSI ChapCountry;
 
-		ChapterDisplay() {
-			ChapLanguage.CStringA::operator = ("eng");
-		}
 		HRESULT Parse(CMatroskaNode* pMN);
 	};
 
@@ -636,13 +634,10 @@ namespace MatroskaReader
 	{
 	public:
 		CUTF8 TagName;
-		CANSI TagLanguage;
+		CANSI TagLanguage{ "und" };
+		CANSI TagLanguageBCP47;
 		CUTF8 TagString;
 
-		SimpleTag() {
-			TagLanguage.CStringA::operator = ("eng");
-		}
-
 		HRESULT Parse(CMatroskaNode* pMN);
 	};