diff --git a/src/Vortice.MediaFoundation/MediaFactory.cs b/src/Vortice.MediaFoundation/MediaFactory.cs
index 90c2c6dc..653516be 100644
--- a/src/Vortice.MediaFoundation/MediaFactory.cs
+++ b/src/Vortice.MediaFoundation/MediaFactory.cs
@@ -125,6 +125,14 @@ public static unsafe IMFActivateCollection MFEnumVideoDeviceSources(Guid videoDe
         return new(pSourceActivate, count);
     }
 
+    public static unsafe IMFActivateCollection MFTEnumEx(Guid guidCategory, uint flags, RegisterTypeInfo? inputType, RegisterTypeInfo? outputType)
+    {
+        nint pppMFTActivate;
+        uint pnumMFTActivate;
+        MFTEnumEx(guidCategory, flags, inputType, outputType, out pppMFTActivate, out pnumMFTActivate);
+        return new(pppMFTActivate, pnumMFTActivate);
+    }
+
     public static unsafe IStream MFCreateStreamOnMFByteStream(IMFByteStream byteStream)
     {
         MFCreateStreamOnMFByteStream(byteStream, out IStream stream).CheckError();