diff --git a/codec/encoder/core/inc/mt_defs.h b/codec/encoder/core/inc/mt_defs.h
index f46eda63..7fdaf0ed 100644
--- a/codec/encoder/core/inc/mt_defs.h
+++ b/codec/encoder/core/inc/mt_defs.h
@@ -91,6 +91,7 @@ int32_t		iEndMbIndex;	// exclusive
 
 typedef struct TagSliceThreading {
 SSliceThreadPrivateData*	pThreadPEncCtx;// thread context, [iThreadIdx]
+char eventNamespace[100];
 WELS_THREAD_HANDLE			pThreadHandles[MAX_THREADS_NUM];// thread handles, [iThreadIdx]
 WELS_EVENT					pSliceCodedEvent[MAX_THREADS_NUM];// events for slice coded state, [iThreadIdx]
 WELS_EVENT					pReadySliceCodingEvent[MAX_THREADS_NUM];	// events for slice coding ready, [iThreadIdx]
diff --git a/codec/encoder/core/src/slice_multi_threading.cpp b/codec/encoder/core/src/slice_multi_threading.cpp
index d237340e..fce8acfe 100644
--- a/codec/encoder/core/src/slice_multi_threading.cpp
+++ b/codec/encoder/core/src/slice_multi_threading.cpp
@@ -43,6 +43,7 @@
 #include <assert.h>
 #if !defined(_WIN32)
 #include <semaphore.h>
+#include <unistd.h>
 #endif//!_WIN32
 #ifndef SEM_NAME_MAX
 // length of semaphore name should be system constrained at least on mac 10.7
@@ -317,6 +318,13 @@ int32_t RequestMtResource (sWelsEncCtx** ppCtx, SWelsSvcCodingParam* pCodingPara
                           "pThreadPEncCtx");
   WELS_VERIFY_RETURN_PROC_IF (1, (NULL == pSmt->pThreadPEncCtx), FreeMemorySvc (ppCtx))
 
+#ifdef _WIN32
+  // Dummy event namespace, the windows events don't actually use this
+  WelsSnprintf (pSmt->eventNamespace, sizeof(pSmt->eventNamespace), "%p", (void*) (*ppCtx));
+#else
+  WelsSnprintf (pSmt->eventNamespace, sizeof(pSmt->eventNamespace), "%p%x", (void*) (*ppCtx), getpid());
+#endif//!_WIN32
+
   iIdx = 0;
   while (iIdx < iNumSpatialLayers) {
     SSliceConfig* pMso	= &pPara->sDependencyLayers[iIdx].sSliceCfg;
@@ -360,34 +368,34 @@ int32_t RequestMtResource (sWelsEncCtx** ppCtx, SWelsSvcCodingParam* pCodingPara
     pSmt->pThreadHandles[iIdx]				= 0;
 
 #ifdef _WIN32
-    WelsSnprintf (name, SEM_NAME_MAX, "fs%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "fs%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pFinSliceCodingEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pFinSliceCodingEvent%d named(%s) ret%d err%d\n", iIdx, name, err, errno);
 #endif
-    WelsSnprintf (name, SEM_NAME_MAX, "ee%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "ee%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pExitEncodeEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pExitEncodeEvent%d named(%s) ret%d err%d\n", iIdx, name, err, errno);
 #endif
 #endif//_WIN32
     // length of semaphore name should be system constrained at least on mac 10.7
-    WelsSnprintf (name, SEM_NAME_MAX, "ud%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "ud%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pUpdateMbListEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pUpdateMbListEvent%d named(%s) ret%d err%d\n", iIdx, name, err, errno);
 #endif
-    WelsSnprintf (name, SEM_NAME_MAX, "fu%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "fu%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pFinUpdateMbListEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pFinUpdateMbListEvent%d named(%s) ret%d err%d\n", iIdx, name, err, errno);
 #endif
-    WelsSnprintf (name, SEM_NAME_MAX, "sc%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "sc%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pSliceCodedEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pSliceCodedEvent%d named(%s) ret%d err%d\n", iIdx, name, err, errno);
 #endif
-    WelsSnprintf (name, SEM_NAME_MAX, "rc%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (name, SEM_NAME_MAX, "rc%d%s", iIdx, pSmt->eventNamespace);
     err = WelsEventOpen (&pSmt->pReadySliceCodingEvent[iIdx], name);
 #if defined(ENABLE_TRACE_MT)
     WelsLog ((*ppCtx), WELS_LOG_INFO, "[MT] Open pReadySliceCodingEvent%d = 0x%p named(%s) ret%d err%d\n", iIdx,
@@ -464,18 +472,18 @@ void ReleaseMtResource (sWelsEncCtx** ppCtx) {
     if (pSmt->pThreadHandles != NULL && pSmt->pThreadHandles[iIdx] != NULL)
       WelsThreadDestroy (&pSmt->pThreadHandles[iIdx]);
 
-    WelsSnprintf (ename, SEM_NAME_MAX, "fs%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "fs%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pFinSliceCodingEvent[iIdx], ename);
-    WelsSnprintf (ename, SEM_NAME_MAX, "ee%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "ee%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pExitEncodeEvent[iIdx], ename);
 #endif//_WIN32
-    WelsSnprintf (ename, SEM_NAME_MAX, "sc%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "sc%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pSliceCodedEvent[iIdx], ename);
-    WelsSnprintf (ename, SEM_NAME_MAX, "rc%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "rc%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pReadySliceCodingEvent[iIdx], ename);
-    WelsSnprintf (ename, SEM_NAME_MAX, "ud%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "ud%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pUpdateMbListEvent[iIdx], ename);
-    WelsSnprintf (ename, SEM_NAME_MAX, "fu%d%p", iIdx, (void*) (*ppCtx));
+    WelsSnprintf (ename, SEM_NAME_MAX, "fu%d%s", iIdx, pSmt->eventNamespace);
     WelsEventClose (&pSmt->pFinUpdateMbListEvent[iIdx], ename);
 
     ++ iIdx;