add default song album art; adjust default blurhashes (#1946)

* fix song progress on white backgrounds

* remove yellow from default song backgrounds

* add default album art for generated song images

* update changelog

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Add `Song Video Mode` to channel settings
   - `Default` - existing behavior
   - `With Progress` - show animated progress bar at bottom of generated video
+- Add fallback album art image for songs that have no album art
 
 ### Changed
 - **BREAKING CHANGE**: Change channel identifiers used in XMLTV to work around bad behavior in Plex

ErsatzTV.Core/FFmpeg/SongVideoGenerator.cs

@@ -126,8 +126,6 @@ public class SongVideoGenerator : ISongVideoGenerator
             int leftMarginPercent = HORIZONTAL_MARGIN_PERCENT;
             int rightMarginPercent = HORIZONTAL_MARGIN_PERCENT;
 
-            if (metadata.Artwork.Any(a => a.ArtworkKind == ArtworkKind.Thumbnail))
-            {
             switch (watermarkLocation)
             {
                 case WatermarkLocation.BottomLeft:
@@ -138,7 +136,6 @@ public class SongVideoGenerator : ISongVideoGenerator
                     rightMarginPercent += WATERMARK_WIDTH_PERCENT + HORIZONTAL_MARGIN_PERCENT;
                     break;
             }
-            }
 
             var leftMargin = (int)Math.Round(leftMarginPercent / 100.0 * channel.FFmpegProfile.Resolution.Width);
             var rightMargin = (int)Math.Round(rightMarginPercent / 100.0 * channel.FFmpegProfile.Resolution.Width);
@@ -161,13 +158,20 @@ public class SongVideoGenerator : ISongVideoGenerator
                 .BuildFile();
 
             // use thumbnail (cover art) if present
-            foreach (Artwork artwork in Optional(
+            // fall back to default art
-                         metadata.Artwork.Find(a => a.ArtworkKind == ArtworkKind.Thumbnail)))
+            Artwork artwork = await Optional(metadata.Artwork.Find(a => a.ArtworkKind == ArtworkKind.Thumbnail))
+                .IfNoneAsync(
+                    new Artwork
                     {
+                        Id = 0,
+                        ArtworkKind = ArtworkKind.Thumbnail,
+                        Path = Path.Combine(FileSystemLayout.ResourcesCacheFolder, "song_album_cover_512.png"),
+                    });
+
             // signal that we want to use cover art as watermark
             videoVersion = new CoverArtMediaVersion
             {
-                    Chapters = new List<MediaChapter>(),
+                Chapters = [],
                 // always stretch cover art
                 Width = 192,
                 Height = 108,
@@ -185,6 +189,9 @@ public class SongVideoGenerator : ISongVideoGenerator
 
             watermarkPath = customPath;
 
+            // only blurhash real album art
+            if (artwork.Id > 0)
+            {
                 // randomize selected blur hash
                 var hashes = new List<string>
                 {

ErsatzTV.FFmpeg/Filter/SongProgressFilter.cs

@@ -17,11 +17,12 @@ public class SongProgressFilter(FrameSize frameSize, Option<TimeSpan> maybeStart
                 double alreadyPlayed = start.TotalSeconds / finish.TotalSeconds;
                 double scale = 1 - alreadyPlayed;
 
+                var generateGrayBar = $"color=c=#323232:s={width}x{height},format=rgba,colorchannelmixer=aa=0.4";
                 var generateWhiteBar = $"color=c=white:s={width}x{height}";
                 var scaleToFullWidth = $"scale=iw*{alreadyPlayed}+iw*(t/{seconds})*{scale}:ih:eval=frame";
                 var overlayBar = "overlay=W*0.05:H-h-H*0.05:shortest=1:enable='gt(t,0.1)'";
 
-                return $"loop=-1:1[si],{generateWhiteBar},format=rgba,colorchannelmixer=aa=0.9,{scaleToFullWidth}[sbar];[si][sbar]{overlayBar}";
+                return $"loop=-1:1[si],{generateGrayBar}[gray];{generateWhiteBar},format=rgba,colorchannelmixer=aa=0.9,{scaleToFullWidth}[sbar];[si][gray]{overlayBar}[sgray];[sgray][sbar]{overlayBar}";
             }
 
             return string.Empty;

ErsatzTV/ErsatzTV.csproj

@@ -71,10 +71,11 @@
       <EmbeddedResource Include="Resources\Scripts\_threePartEpisodes.js" />
       <EmbeddedResource Include="Resources\Scripts\_episode.js" />
       <EmbeddedResource Include="Resources\Scripts\_movie.js" />
-      <EmbeddedResource Include="Resources\song_progress_overlay.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" />
+      <EmbeddedResource Include="Resources\song_progress_overlay.png" />
       <EmbeddedResource Include="Resources\ErsatzTV.png" />
       <EmbeddedResource Include="Resources\ISO-639-2_utf-8.txt" />
       <EmbeddedResource Include="Resources\Templates\_default.ass.sbntxt" />

ErsatzTV/Services/RunOnce/ResourceExtractorService.cs

@@ -17,10 +17,11 @@ public class ResourceExtractorService : BackgroundService
         Assembly assembly = typeof(ResourceExtractorService).GetTypeInfo().Assembly;
 
         await ExtractResource(assembly, "background.png", stoppingToken);
-        await ExtractResource(assembly, "song_progress_overlay.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);
+        await ExtractResource(assembly, "song_progress_overlay.png", stoppingToken);
         await ExtractResource(assembly, "ErsatzTV.png", stoppingToken);
 
         await ExtractFontResource(assembly, "Sen.ttf", stoppingToken);