From 04b73cace60c3bd97812d54b9a6d15ea2a24ba2d Mon Sep 17 00:00:00 2001
From: nyanmisaka <nst799610810@gmail.com>
Date: Tue, 26 Jul 2022 23:06:11 +0800
Subject: [PATCH] Disable auto inserted SW scaler for HW decoders in case of
 changed resolution

---
 MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index 1d65f9a345..7c59fa300d 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -931,6 +931,13 @@ namespace MediaBrowser.Controller.MediaEncoding
                 arg.Append(" -i \"").Append(state.AudioStream.Path).Append('"');
             }
 
+            // Disable auto inserted SW scaler for HW decoders in case of changed resolution.
+            var isSwDecoder = string.IsNullOrEmpty(GetHardwareVideoDecoder(state, options));
+            if (!isSwDecoder)
+            {
+                arg.Append(" -autoscale 0");
+            }
+
             return arg.ToString();
         }