diff --git a/codec/encoder/core/src/ratectl.cpp b/codec/encoder/core/src/ratectl.cpp
index 84748d42..7805a5b5 100644
--- a/codec/encoder/core/src/ratectl.cpp
+++ b/codec/encoder/core/src/ratectl.cpp
@@ -540,7 +540,7 @@ void RcDecideTargetBits (sWelsEncCtx* pEncCtx) {
   if (pEncCtx->eSliceType == I_SLICE) {
     pWelsSvcRc->iTargetBits = WELS_DIV_ROUND(pWelsSvcRc->iBitsPerFrame * IDR_BITRATE_RATIO, INT_MULTIPLY);
   } else {
-    pWelsSvcRc->iTargetBits = (pWelsSvcRc->iRemainingBits * pTOverRc->iTlayerWeight /
+    pWelsSvcRc->iTargetBits = (int32_t)((int64_t)pWelsSvcRc->iRemainingBits * pTOverRc->iTlayerWeight /
                                           pWelsSvcRc->iRemainingWeights);
     if ((pWelsSvcRc->iTargetBits <= 0) && (pEncCtx->pSvcParam->iRCMode == RC_LOW_BW_MODE)) {
       pWelsSvcRc->iCurrentBitsLevel = BITS_EXCEEDED;
@@ -637,7 +637,7 @@ void RcGomTargetBits (sWelsEncCtx* pEncCtx, const int32_t kiSliceId) {
     if (0 == iSumSad)
       iAllocateBits = WELS_DIV_ROUND(iLeftBits, (iLastGomIndex - kiComplexityIndex));
     else
-      iAllocateBits = WELS_DIV_ROUND(iLeftBits * pWelsSvcRc_Base->pCurrentFrameGomSad[kiComplexityIndex + 1], iSumSad);
+      iAllocateBits = WELS_DIV_ROUND((int64_t)iLeftBits * pWelsSvcRc_Base->pCurrentFrameGomSad[kiComplexityIndex + 1], iSumSad);
 
   }
   pSOverRc->iGomTargetBits = iAllocateBits;
@@ -648,10 +648,10 @@ void RcGomTargetBits (sWelsEncCtx* pEncCtx, const int32_t kiSliceId) {
 void RcCalculateGomQp (sWelsEncCtx* pEncCtx, SMB* pCurMb, int32_t iSliceId) {
   SWelsSvcRc* pWelsSvcRc			= &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId];
   SRCSlicing* pSOverRc				= &pWelsSvcRc->pSlicingOverRc[iSliceId];
-  int32_t iBitsRatio = 1;
+  int64_t iBitsRatio = 1;
 
-  int32_t iLeftBits = pSOverRc->iTargetBitsSlice - pSOverRc->iFrameBitsSlice;
-  int32_t iTargetLeftBits = iLeftBits + pSOverRc->iGomBitsSlice - pSOverRc->iGomTargetBits;
+  int64_t iLeftBits = pSOverRc->iTargetBitsSlice - pSOverRc->iFrameBitsSlice;
+  int64_t iTargetLeftBits = iLeftBits + pSOverRc->iGomBitsSlice - pSOverRc->iGomTargetBits;
 
   if (iLeftBits <= 0) {
     pSOverRc->iCalculatedQpSlice += 2;
@@ -799,8 +799,8 @@ void RcUpdateFrameComplexity (sWelsEncCtx* pEncCtx) {
   if (0 == pTOverRc->iPFrameNum) {
     pTOverRc->iLinearCmplx = ((int64_t)pWelsSvcRc->iFrameDqBits) * pWelsSvcRc->iQStep;
   } else {
-    pTOverRc->iLinearCmplx = WELS_DIV_ROUND64((LINEAR_MODEL_DECAY_FACTOR * pTOverRc->iLinearCmplx
-                             + (INT_MULTIPLY - LINEAR_MODEL_DECAY_FACTOR) * (pWelsSvcRc->iFrameDqBits * pWelsSvcRc->iQStep)), INT_MULTIPLY);
+    pTOverRc->iLinearCmplx = WELS_DIV_ROUND64((LINEAR_MODEL_DECAY_FACTOR * (int64_t)pTOverRc->iLinearCmplx
+                             + (INT_MULTIPLY - LINEAR_MODEL_DECAY_FACTOR) * (int64_t)(pWelsSvcRc->iFrameDqBits * pWelsSvcRc->iQStep)), INT_MULTIPLY);
   }
   int32_t iAlpha = WELS_DIV_ROUND(INT_MULTIPLY, (1 + pTOverRc->iPFrameNum));
   if (iAlpha < SMOOTH_FACTOR_MIN_VALUE)
diff --git a/test/api/decode_encode_test.cpp b/test/api/decode_encode_test.cpp
index f574b171..563d5679 100644
--- a/test/api/decode_encode_test.cpp
+++ b/test/api/decode_encode_test.cpp
@@ -104,8 +104,8 @@ TEST_P(DecodeEncodeTest, CompareOutput) {
 }
 
 static const DecodeEncodeFileParam kFileParamArray[] = {
-  {"res/test_vd_1d.264", "16b6379ce3711c57ea966e8da3e6b9815bf5ef4e", 320, 192, 12.0f},
-  {"res/test_vd_rc.264", "03a93dbf5482b4a799d52d5fd373fde58a782e12", 320, 192, 12.0f},
+  {"res/test_vd_1d.264", "a4c7299ec1a7bacd5819685e221a79ac2b56cdbc", 320, 192, 12.0f},
+  {"res/test_vd_rc.264", "106fd8cc978c1801b0d1f8297e9b7f17d5336e15", 320, 192, 12.0f},
 };
 
 INSTANTIATE_TEST_CASE_P(DecodeEncodeFile, DecodeEncodeTest,
diff --git a/test/api/encoder_test.cpp b/test/api/encoder_test.cpp
index 1e6cdf34..9f405549 100644
--- a/test/api/encoder_test.cpp
+++ b/test/api/encoder_test.cpp
@@ -73,15 +73,15 @@ TEST_P(EncoderOutputTest, CompareOutput) {
 static const EncodeFileParam kFileParamArray[] = {
   {
       "res/CiscoVT2people_320x192_12fps.yuv",
-      "86ee1314eabf5a6d6083c5260d36e2d908f36ea5", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, false, 1
+      "0a36b75e423fc6b49f6adf7eee12c039a096f538", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, false, 1
   },
   {
       "res/CiscoVT2people_160x96_6fps.yuv",
-      "20f3e5cbefe70e5a8793e60672fd70e136bc082a", CAMERA_VIDEO_REAL_TIME, 160, 96, 6.0f, SM_SINGLE_SLICE, false, 1
+      "73981e6ea5b62f7338212c538a7cc755e7c9c030", CAMERA_VIDEO_REAL_TIME, 160, 96, 6.0f, SM_SINGLE_SLICE, false, 1
   },
   {
       "res/Static_152_100.yuv",
-      "035f2e5b35947ab43cad7c5ca4cd8a3b658306ba", CAMERA_VIDEO_REAL_TIME, 152, 100, 6.0f, SM_SINGLE_SLICE, false, 1
+      "83db4c0e3006bbe039bd327b6e78c57fbb05316f", CAMERA_VIDEO_REAL_TIME, 152, 100, 6.0f, SM_SINGLE_SLICE, false, 1
   },
   {
       "res/CiscoVT2people_320x192_12fps.yuv",
@@ -89,11 +89,11 @@ static const EncodeFileParam kFileParamArray[] = {
   },
   {
       "res/CiscoVT2people_320x192_12fps.yuv",
-      "6f49cc4e746522d7d91599c9a883072e838ae918", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, true, 1
+      "e64ba75456c821ca35a949eda89f85bff8ee69fa", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, true, 1
   },
   {
       "res/CiscoVT2people_320x192_12fps.yuv",
-      "4da4526a763497cfd777e1a211c67df5e9d48b29", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, false, 2
+      "684e6d141ada776892bdb01ee93efe475983ed36", CAMERA_VIDEO_REAL_TIME, 320, 192, 12.0f, SM_SINGLE_SLICE, false, 2
   },
   {
       "res/Cisco_Absolute_Power_1280x720_30fps.yuv",