From c95452ae8ffdbefa898b5f084e8b92aae1935d7e Mon Sep 17 00:00:00 2001
From: reven <john@reven.nz>
Date: Sun, 21 May 2023 13:43:34 +1200
Subject: [PATCH] fixed issue with add audio track not replacing variables in
 language field

---
 .../FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
index ad32d138..287c7894 100644
--- a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
+++ b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
@@ -148,9 +148,10 @@ public class FfmpegBuilderAudioAddTrack : FfmpegBuilderNode
     internal AudioStream GetBestAudioTrack(NodeParameters args, IEnumerable<AudioStream> streams)
     {
         Regex? rgxLanguage = null;
+        string language = args.ReplaceVariables(this.Language ?? string.Empty, stripMissing: true) ?? string.Empty;
         try
         {
-            rgxLanguage = new Regex(this.Language, RegexOptions.IgnoreCase);
+            rgxLanguage = new Regex(language, RegexOptions.IgnoreCase);
         }
         catch (Exception) { }
 #pragma warning disable IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
@@ -158,14 +159,14 @@ public class FfmpegBuilderAudioAddTrack : FfmpegBuilderNode
 #pragma warning restore IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
         .OrderBy(x =>
         {
-            if (Language != string.Empty)
+            if (language != string.Empty)
             {
                 args.Logger?.ILog("Language: " + x.Language, x);
                 if (string.IsNullOrEmpty(x.Language))
                     return 50; // no language specified
                 if (rgxLanguage != null && rgxLanguage.IsMatch(x.Language))
                     return 0;
-                if (x.Language.ToLower() != Language)
+                if (x.Language.ToLower() != language)
                     return 100; // low priority not the desired language
             }
             return 0;