From cf3b8d90e30d5718cbea3525fb13494228dd239a Mon Sep 17 00:00:00 2001
From: Jason Dove <1695733+jasongdove@users.noreply.github.com>
Date: Wed, 5 Apr 2023 10:02:46 -0500
Subject: [PATCH] fix bt470bg color normalization using qsv (#1230)

---
 CHANGELOG.md                               | 1 +
 ErsatzTV.FFmpeg/Filter/ColorspaceFilter.cs | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c9b4618e8..338fdfacf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix bug where local libraries would merge with media server libraries when the same file was added to both libraries
 - Fix transcoding some 10-bit content from media servers using VAAPI acceleration
 - Fix decoding of MPEG-4 Part 2 (e.g. DivX) content using NVIDIA acceleration
+- Fix color normalization from `bt470bg` to `bt709` using QSV acceleration
 
 ### Changed
 - Use Poster artwork for XMLTV if available
diff --git a/ErsatzTV.FFmpeg/Filter/ColorspaceFilter.cs b/ErsatzTV.FFmpeg/Filter/ColorspaceFilter.cs
index 25409aaa5..ea0a1cb6f 100644
--- a/ErsatzTV.FFmpeg/Filter/ColorspaceFilter.cs
+++ b/ErsatzTV.FFmpeg/Filter/ColorspaceFilter.cs
@@ -72,8 +72,8 @@ public class ColorspaceFilter : BaseFilter
             {
                 return _desiredPixelFormat.BitDepth switch
                 {
-                    10 => $"{hwdownload}colormatrix=dst=bt709,format=yuv420p10",
-                    8 => $"{hwdownload}colormatrix=dst=bt709,format=yuv420p",
+                    10 => $"{hwdownload}colormatrix=src=bt470bg:dst=bt709,format=yuv420p10",
+                    8 => $"{hwdownload}colormatrix=src=bt470bg:dst=bt709,format=yuv420p",
                     _ => string.Empty
                 };
             }