Add RenderSession.OnComplete

API/RenderResult.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
+using System.IO;
 
 namespace ADOFAIRenderer.API;
 
@@ -62,6 +63,25 @@ public class RenderResult
         ErrorMessage = errorMessage;
     }
 
+    public static RenderResult CreateSuccess(string outputPath, long totalFrames, double fps, TimeSpan renderDuration)
+    {
+        var fileSizeBytes = 0L;
+        if (!string.IsNullOrEmpty(outputPath) && File.Exists(outputPath))
+        {
+            try { fileSizeBytes = new FileInfo(outputPath).Length; }
+            catch { /* ignored */ }
+        }
+
+        var videoDuration = fps > 0 ? totalFrames / fps : 0.0;
+        return new RenderResult(true, outputPath, totalFrames, videoDuration, renderDuration, fileSizeBytes);
+    }
+
+    public static RenderResult CreateFailure(string? errorMessage, long totalFrames, double fps, TimeSpan renderDuration)
+    {
+        var videoDuration = fps > 0 ? totalFrames / fps : 0.0;
+        return new RenderResult(false, string.Empty, totalFrames, videoDuration, renderDuration, 0, errorMessage ?? "Rendering failed or was cancelled.");
+    }
+
     public override string ToString()
     {
         return Success