From 904efeaddcfe55e461ba5848af4adb61bc52393d Mon Sep 17 00:00:00 2001
From: Cody Robibero <cody@robibe.ro>
Date: Tue, 4 Jan 2022 22:02:36 -0700
Subject: [PATCH] Add null check for audio stream

---
 MediaBrowser.Model/Dlna/StreamBuilder.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 84a6f6abe..d2ca21150 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -1236,7 +1236,7 @@ namespace MediaBrowser.Model.Dlna
                 return (false, TranscodeReason.ContainerBitrateExceedsLimit);
             }
 
-            if (audioStream.IsExternal)
+            if (audioStream?.IsExternal == true)
             {
                 return (false, TranscodeReason.AudioIsExternal);
             }