diff --git a/dlls/mfplat/main.c b/dlls/mfplat/main.c
index 8d9dffe075e..e3cb35d8663 100644
--- a/dlls/mfplat/main.c
+++ b/dlls/mfplat/main.c
@@ -2056,6 +2056,19 @@ static const char *debugstr_eventid(DWORD event)
         X(MEWMDRMProximityCompleted),
         X(MEWMDRMLicenseStoreCleaned),
         X(MEWMDRMRevocationDownloadCompleted),
+        X(METransformUnknown),
+        X(METransformNeedInput),
+        X(METransformHaveOutput),
+        X(METransformDrainComplete),
+        X(METransformMarker),
+        X(METransformInputStreamStateChanged),
+        X(MEByteStreamCharacteristicsChanged),
+        X(MEVideoCaptureDeviceRemoved),
+        X(MEVideoCaptureDevicePreempted),
+        X(MEStreamSinkFormatInvalidated),
+        X(MEEncodingParameters),
+        X(MEContentProtectionMetadata),
+        X(MEDeviceThermalStateChanged),
 #undef X
     };
 
diff --git a/include/mfobjects.idl b/include/mfobjects.idl
index 8e3d65c77cb..ee49be35af0 100644
--- a/include/mfobjects.idl
+++ b/include/mfobjects.idl
@@ -567,6 +567,19 @@ enum {
     MEWMDRMLicenseStoreCleaned = 515,
     MEWMDRMRevocationDownloadCompleted = 516,
     MEWMDRMV1Anchor = MEWMDRMRevocationDownloadCompleted,
+    METransformUnknown = 600,
+    METransformNeedInput = 601,
+    METransformHaveOutput = 602,
+    METransformDrainComplete = 603,
+    METransformMarker = 604,
+    METransformInputStreamStateChanged = 605,
+    MEByteStreamCharacteristicsChanged = 700,
+    MEVideoCaptureDeviceRemoved = 800,
+    MEVideoCaptureDevicePreempted = 801,
+    MEStreamSinkFormatInvalidated = 802,
+    MEEncodingParameters = 803,
+    MEContentProtectionMetadata = 900,
+    MEDeviceThermalStateChanged = 950,
     MEReservedMax = 10000
 };