From ce0457faf5dd0ecc7413fbb3618b52e1f0636446 Mon Sep 17 00:00:00 2001
From: Joe Rogers <1337joe@gmail.com>
Date: Thu, 30 Sep 2021 22:24:46 +0200
Subject: [PATCH] Add mp4 track title fallback (#6638)

---
 .../Probing/ProbeResultNormalizer.cs          | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index 9ed6c264ee..df9753b380 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -688,6 +688,16 @@ namespace MediaBrowser.MediaEncoding.Probing
                 {
                     stream.BitDepth = streamInfo.BitsPerRawSample;
                 }
+
+                if (string.IsNullOrEmpty(stream.Title))
+                {
+                    // mp4 missing track title workaround: fall back to handler_name if populated
+                    string handlerName = GetDictionaryValue(streamInfo.Tags, "handler_name");
+                    if (!string.IsNullOrEmpty(handlerName))
+                    {
+                        stream.Title = handlerName;
+                    }
+                }
             }
             else if (string.Equals(streamInfo.CodecType, "subtitle", StringComparison.OrdinalIgnoreCase))
             {
@@ -696,6 +706,16 @@ namespace MediaBrowser.MediaEncoding.Probing
                 stream.LocalizedUndefined = _localization.GetLocalizedString("Undefined");
                 stream.LocalizedDefault = _localization.GetLocalizedString("Default");
                 stream.LocalizedForced = _localization.GetLocalizedString("Forced");
+
+                if (string.IsNullOrEmpty(stream.Title))
+                {
+                    // mp4 missing track title workaround: fall back to handler_name if populated and not the default "SubtitleHandler"
+                    string handlerName = GetDictionaryValue(streamInfo.Tags, "handler_name");
+                    if (!string.IsNullOrEmpty(handlerName) && !string.Equals(handlerName, "SubtitleHandler", StringComparison.OrdinalIgnoreCase))
+                    {
+                        stream.Title = handlerName;
+                    }
+                }
             }
             else if (string.Equals(streamInfo.CodecType, "video", StringComparison.OrdinalIgnoreCase))
             {