diff --git a/Code/Main/FrameOrder.cs b/Code/Main/FrameOrder.cs
index c2d5457..340aa34 100644
--- a/Code/Main/FrameOrder.cs
+++ b/Code/Main/FrameOrder.cs
@@ -141,6 +141,9 @@ namespace Flowframes.Main
                 if (Interpolate.canceled) return;
                 if (i >= frameFilesWithoutLast.Length) break;
 
+                if (debug && i == startIndex)
+                    fileContent += $"# NEW THREAD - {startIndex} to {startIndex + count}\n";
+
                 string inputFilenameNoExt = Path.GetFileNameWithoutExtension(frameFilesWithoutLast[i].Name);
                 int dupesAmount = dupesDict.ContainsKey(inputFilenameNoExt) ? dupesDict[inputFilenameNoExt] : 0;
                 bool discardThisFrame = (sceneDetection && (i + 2) < frameFilesWithoutLast.Length && sceneFrames.Contains(Path.GetFileNameWithoutExtension(frameFilesWithoutLast[i + 1].Name)));     // i+2 is in scene detection folder, means i+1 is ugly interp frame