diff --git a/Code/Magick/Dedupe.cs b/Code/Magick/Dedupe.cs
index 33d90d3..c6edbc0 100644
--- a/Code/Magick/Dedupe.cs
+++ b/Code/Magick/Dedupe.cs
@@ -205,12 +205,12 @@ namespace Flowframes.Magick
             return bufferSize;
         }
 
-        public static async Task CreateDupesFile (string framesPath, int lastFrameNum)
+        public static async Task CreateDupesFile (string framesPath, int lastFrameNum, string ext)
         {
             string infoFile = Path.Combine(framesPath.GetParentDir(), "dupes.ini");
             string fileContent = "";
 
-            FileInfo[] frameFiles = IOUtils.GetFileInfosSorted(framesPath, false, "*.png");
+            FileInfo[] frameFiles = IOUtils.GetFileInfosSorted(framesPath, false, $"*{ext}");
 
             for(int i = 0; i < frameFiles.Length; i++)
             {
diff --git a/Code/Main/Interpolate.cs b/Code/Main/Interpolate.cs
index 8f1fa67..6a82aa4 100644
--- a/Code/Main/Interpolate.cs
+++ b/Code/Main/Interpolate.cs
@@ -181,7 +181,7 @@ namespace Flowframes
         public static async Task RunAi(string outpath, AI ai, bool stepByStep = false)
         {
             if (canceled) return;
-            await Dedupe.CreateDupesFile(current.framesFolder, currentInputFrameCount);
+            await Dedupe.CreateDupesFile(current.framesFolder, currentInputFrameCount, current.framesExt);
             await FrameRename.Rename();
             await FrameOrder.CreateFrameOrderFile(current.framesFolder, Config.GetBool("enableLoop"), current.interpFactor);