allow custom missing album art

CHANGELOG.md

@@ -41,6 +41,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - Error streams will prioritize using `background.png` if it exists
     - Replacing this `background.png` file will allow custom error/offline backgrounds
 - Add `Troubleshoot Playback` buttons on movie and episode detail pages
+- Add song background and missing album art customization
+  - Default files start with an underscore; custom versions must remove the underscore
 
 ### Fixed
 - Fix HLS Direct playback with Jellyfin 10.11

ErsatzTV.Core/FFmpeg/SongVideoGenerator.cs

@@ -167,7 +167,7 @@ public class SongVideoGenerator : ISongVideoGenerator
                     {
                         Id = 0,
                         ArtworkKind = ArtworkKind.Thumbnail,
-                        Path = Path.Combine(FileSystemLayout.ResourcesCacheFolder, "song_album_cover_512.png")
+                        Path = _localFileSystem.GetCustomOrDefaultFile(FileSystemLayout.ResourcesCacheFolder, "song_album_cover_512.png")
                     });
 
             // signal that we want to use cover art as watermark

ErsatzTV.Scanner.Tests/Core/FFmpeg/TranscodingTests.cs

@@ -288,7 +288,7 @@ public class TranscodingTests
             localFileSystem,
             LoggerFactory.CreateLogger<FFmpegLibraryProcessService>());
 
-        var songVideoGenerator = new SongVideoGenerator(tempFilePool, mockImageCache, service);
+        var songVideoGenerator = new SongVideoGenerator(tempFilePool, mockImageCache, service, localFileSystem);
 
         var channel = new Channel(Guid.NewGuid())
         {

ErsatzTV/ErsatzTV.csproj

@@ -85,7 +85,7 @@
         <EmbeddedResource Include="Resources\Scripts\MpegTs\run.sh" />
         <EmbeddedResource Include="Resources\Scripts\MpegTs\run.bat" />
         <EmbeddedResource Include="Resources\Scripts\MpegTs\mpegts.yml" />
-        <EmbeddedResource Include="Resources\song_album_cover_512.png" />
+        <EmbeddedResource Include="Resources\_song_album_cover_512.png" />
         <EmbeddedResource Include="Resources\_song_background_1.png" />
         <EmbeddedResource Include="Resources\_song_background_2.png" />
         <EmbeddedResource Include="Resources\_song_background_3.png" />

ErsatzTV/Services/RunOnce/ResourceExtractorService.cs

@@ -17,7 +17,7 @@ public class ResourceExtractorService : BackgroundService
         Assembly assembly = typeof(ResourceExtractorService).GetTypeInfo().Assembly;
 
         await ExtractResource(assembly, "_background.png", stoppingToken);
-        await ExtractResource(assembly, "song_album_cover_512.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);
         await ExtractResource(assembly, "_song_background_3.png", stoppingToken);