From 8753b7200f8b637d96cd300ff613c2b010a8e2f4 Mon Sep 17 00:00:00 2001
From: Maxr1998 <max.rumpf1998@gmail.com>
Date: Thu, 15 Sep 2022 02:04:12 +0200
Subject: [PATCH 1/2] Allow direct play even if no audio stream is available

---
 MediaBrowser.Model/Dlna/StreamBuilder.cs | 27 +++++++++++++-----------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index fdb9fd5d54..6820e651d5 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -436,9 +436,9 @@ namespace MediaBrowser.Model.Dlna
                 {
                     containerSupported = true;
 
-                    videoSupported = videoStream != null && profile.SupportsVideoCodec(videoStream.Codec);
+                    videoSupported = videoStream == null || profile.SupportsVideoCodec(videoStream.Codec);
 
-                    audioSupported = audioStream != null && profile.SupportsAudioCodec(audioStream.Codec);
+                    audioSupported = audioStream == null || profile.SupportsAudioCodec(audioStream.Codec);
 
                     if (videoSupported && audioSupported)
                     {
@@ -447,18 +447,17 @@ namespace MediaBrowser.Model.Dlna
                 }
             }
 
-            var list = new List<TranscodeReason>();
             if (!containerSupported)
             {
                 reasons |= TranscodeReason.ContainerNotSupported;
             }
 
-            if (videoStream != null && !videoSupported)
+            if (!videoSupported)
             {
                 reasons |= TranscodeReason.VideoCodecNotSupported;
             }
 
-            if (audioStream != null && !audioSupported)
+            if (!audioSupported)
             {
                 reasons |= TranscodeReason.AudioCodecNotSupported;
             }
@@ -1182,14 +1181,18 @@ namespace MediaBrowser.Model.Dlna
                     }
 
                     // Check audio codec
-                    var selectedAudioStream = candidateAudioStreams.FirstOrDefault(audioStream => directPlayProfile.SupportsAudioCodec(audioStream.Codec));
-                    if (selectedAudioStream == null)
+                    MediaStream selectedAudioStream = null;
+                    if (candidateAudioStreams.Any())
                     {
-                        directPlayProfileReasons |= TranscodeReason.AudioCodecNotSupported;
-                    }
-                    else
-                    {
-                        audioCodecProfileReasons = audioStreamMatches.GetValueOrDefault(selectedAudioStream);
+                        selectedAudioStream = candidateAudioStreams.FirstOrDefault(audioStream => directPlayProfile.SupportsAudioCodec(audioStream.Codec));
+                        if (selectedAudioStream == null)
+                        {
+                            directPlayProfileReasons |= TranscodeReason.AudioCodecNotSupported;
+                        }
+                        else
+                        {
+                            audioCodecProfileReasons = audioStreamMatches.GetValueOrDefault(selectedAudioStream);
+                        }
                     }
 
                     var failureReasons = directPlayProfileReasons | containerProfileReasons | subtitleProfileReasons;

From 23100c9b86b09694430f1121bc0ce360217c2033 Mon Sep 17 00:00:00 2001
From: Maxr1998 <max.rumpf1998@gmail.com>
Date: Sun, 18 Sep 2022 22:56:38 +0200
Subject: [PATCH 2/2] Use ICollection for candidateAudioStreams

---
 MediaBrowser.Model/Dlna/StreamBuilder.cs | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 6820e651d5..13f4fa00d0 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -589,21 +589,19 @@ namespace MediaBrowser.Model.Dlna
             }
 
             // Collect candidate audio streams
-            IEnumerable<MediaStream> candidateAudioStreams = audioStream == null ? Array.Empty<MediaStream>() : new[] { audioStream };
+            ICollection<MediaStream> candidateAudioStreams = audioStream == null ? Array.Empty<MediaStream>() : new[] { audioStream };
             if (!options.AudioStreamIndex.HasValue || options.AudioStreamIndex < 0)
             {
                 if (audioStream?.IsDefault == true)
                 {
-                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.IsDefault);
+                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.IsDefault).ToArray();
                 }
                 else
                 {
-                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.Language == audioStream?.Language);
+                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.Language == audioStream?.Language).ToArray();
                 }
             }
 
-            candidateAudioStreams = candidateAudioStreams.ToArray();
-
             var videoStream = item.VideoStream;
 
             var directPlayBitrateEligibility = IsBitrateEligibleForDirectPlayback(item, options.GetMaxBitrate(false) ?? 0, options, PlayMethod.DirectPlay);
@@ -1059,7 +1057,7 @@ namespace MediaBrowser.Model.Dlna
             MediaSourceInfo mediaSource,
             MediaStream videoStream,
             MediaStream audioStream,
-            IEnumerable<MediaStream> candidateAudioStreams,
+            ICollection<MediaStream> candidateAudioStreams,
             MediaStream subtitleStream,
             bool isEligibleForDirectPlay,
             bool isEligibleForDirectStream)