allow error/offline background customization

CHANGELOG.md

@@ -36,6 +36,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - This will be used as a more accurate check for interlaced content
   - The result will be cached (only probed once and stored) in the database along with all other media item statistics (e.g. duration)
   - This feature will currently ignore content that is not streamed from disk
+- Add error/offline background customization
+  - Default error background is now named `_background.png`
+  - Error streams will prioritize using `background.png` if it exists
+    - Replacing this `background.png` file will allow custom error/offline backgrounds
 
 ### Fixed
 - Fix HLS Direct playback with Jellyfin 10.11
@@ -63,6 +67,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 - Use smaller batch size for search index updates (100, down from 1000)
   - This should help newly scanned items appear in the UI more quickly
+- Replace favicon and logo in background image used for error streams
 
 ## [25.8.0] - 2025-10-26
 ### Added

ErsatzTV.Core/FFmpeg/FFmpegLibraryProcessService.cs

@@ -760,6 +760,10 @@ public class FFmpegLibraryProcessService : IFFmpegProcessService
         }
 
         string videoPath = Path.Combine(FileSystemLayout.ResourcesCacheFolder, "background.png");
+        if (!File.Exists(videoPath))
+        {
+            videoPath = Path.Combine(FileSystemLayout.ResourcesCacheFolder, "_background.png");
+        }
 
         var videoVersion = BackgroundImageMediaVersion.ForPath(videoPath, desiredResolution);
 

ErsatzTV/ErsatzTV.csproj

@@ -76,7 +76,7 @@
 
     <ItemGroup>
         <EmbeddedResource Include="Resources\Fonts\Sen.ttf" />
-        <EmbeddedResource Include="Resources\background.png" />
+        <EmbeddedResource Include="Resources\_background.png" />
         <EmbeddedResource Include="Resources\Fonts\OPTIKabel-Heavy.otf" />
         <EmbeddedResource Include="Resources\Fonts\Roboto-Regular.ttf" />
         <EmbeddedResource Include="Resources\Scripts\_threePartEpisodes.js" />

ErsatzTV/Services/RunOnce/ResourceExtractorService.cs

@@ -16,7 +16,7 @@ public class ResourceExtractorService : BackgroundService
 
         Assembly assembly = typeof(ResourceExtractorService).GetTypeInfo().Assembly;
 
-        await ExtractResource(assembly, "background.png", stoppingToken);
+        await ExtractResource(assembly, "_background.png", stoppingToken);
         await ExtractResource(assembly, "song_album_cover_512.png", stoppingToken);
         await ExtractResource(assembly, "song_background_1.png", stoppingToken);
         await ExtractResource(assembly, "song_background_2.png", stoppingToken);