diff --git a/Libraries/LibMedia/CodecID.h b/Libraries/LibMedia/CodecID.h
index 8397aed515..31ccffabe9 100644
--- a/Libraries/LibMedia/CodecID.h
+++ b/Libraries/LibMedia/CodecID.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <AK/Format.h>
+#include <LibMedia/TrackType.h>
 
 namespace Media {
 
@@ -33,6 +34,32 @@ enum class CodecID : u32 {
     FLAC,
 };
 
+inline TrackType track_type_from_codec_id(CodecID codec)
+{
+    switch (codec) {
+    case CodecID::VP8:
+    case CodecID::VP9:
+    case CodecID::H261:
+    case CodecID::MPEG1:
+    case CodecID::H262:
+    case CodecID::H263:
+    case CodecID::H264:
+    case CodecID::H265:
+    case CodecID::AV1:
+        return TrackType::Video;
+    case CodecID::MP3:
+    case CodecID::AAC:
+    case CodecID::Theora:
+    case CodecID::Vorbis:
+    case CodecID::Opus:
+    case CodecID::FLAC:
+        return TrackType::Audio;
+    case CodecID::Unknown:
+        break;
+    }
+    return TrackType::Unknown;
+}
+
 }
 
 namespace AK {
diff --git a/Libraries/LibMedia/Containers/Matroska/Reader.cpp b/Libraries/LibMedia/Containers/Matroska/Reader.cpp
index 560a4b849e..dc023ae124 100644
--- a/Libraries/LibMedia/Containers/Matroska/Reader.cpp
+++ b/Libraries/LibMedia/Containers/Matroska/Reader.cpp
@@ -13,6 +13,7 @@
 #include <AK/Time.h>
 #include <AK/Utf8View.h>
 #include <LibCore/MappedFile.h>
+#include <LibMedia/CodecID.h>
 #include <LibMedia/Containers/Matroska/Utilities.h>
 
 #include "Reader.h"
@@ -538,6 +539,24 @@ static DecoderErrorOr<NonnullRefPtr<TrackEntry>> parse_track_entry(Streamer& str
         return IterationDecision::Continue;
     }));
 
+    if (track_entry->track_type() == TrackEntry::TrackType::Complex) {
+        // A mix of different other TrackType. The codec needs to define how the Matroska Player
+        // should interpret such data.
+        auto codec_track_type = track_type_from_codec_id(codec_id_from_matroska_id_string(track_entry->codec_id()));
+        switch (codec_track_type) {
+        case TrackType::Video:
+            track_entry->set_track_type(TrackEntry::TrackType::Video);
+            break;
+        case TrackType::Audio:
+            track_entry->set_track_type(TrackEntry::TrackType::Audio);
+            break;
+        case TrackType::Subtitles:
+            track_entry->set_track_type(TrackEntry::TrackType::Subtitle);
+            break;
+        case TrackType::Unknown:
+            break;
+        }
+    }
     return track_entry;
 }
 
diff --git a/Libraries/LibMedia/Track.h b/Libraries/LibMedia/Track.h
index 1f41c04258..ce37e72557 100644
--- a/Libraries/LibMedia/Track.h
+++ b/Libraries/LibMedia/Track.h
@@ -13,16 +13,10 @@
 #include <AK/Utf16String.h>
 #include <AK/Variant.h>
 #include <LibMedia/Color/CodingIndependentCodePoints.h>
+#include <LibMedia/TrackType.h>
 
 namespace Media {
 
-enum class TrackType : u32 {
-    Video,
-    Audio,
-    Subtitles,
-    Unknown,
-};
-
 class Track {
     struct VideoData {
         u64 pixel_width { 0 };
diff --git a/Libraries/LibMedia/TrackType.h b/Libraries/LibMedia/TrackType.h
new file mode 100644
index 0000000000..136b89c85f
--- /dev/null
+++ b/Libraries/LibMedia/TrackType.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025, Gregory Bertilson <gregory@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace Media {
+
+enum class TrackType : u8 {
+    Video,
+    Audio,
+    Subtitles,
+    Unknown,
+};
+
+}