diff --git a/mpp/codec/enc/h264/src/H264EncApi.c b/mpp/codec/enc/h264/src/H264EncApi.c
index c37073e1..3c91df1e 100644
--- a/mpp/codec/enc/h264/src/H264EncApi.c
+++ b/mpp/codec/enc/h264/src/H264EncApi.c
@@ -968,7 +968,7 @@ H264EncRet H264EncStrmEncodeAfter(H264ECtx *pEncInst,
         if (stat == H264RC_OVERFLOW) {
             /* pEncOut->codingType = H264ENC_NOTCODED_FRAME; */
             pSlice->frameNum = pSlice->prevFrameNum;    /* revert frame_num */
-            h264e_dbg_func("H264EncStrmEncode: OK, Frame discarded (HRD overflow)");
+            mpp_err("H264EncStrmEncode: OK, Frame discarded (HRD overflow)!");
             return H264ENC_FRAME_READY;
         }
     }
diff --git a/mpp/codec/enc/h264/src/h264e_api.c b/mpp/codec/enc/h264/src/h264e_api.c
index 7d9880fa..3962cd80 100644
--- a/mpp/codec/enc/h264/src/h264e_api.c
+++ b/mpp/codec/enc/h264/src/h264e_api.c
@@ -322,8 +322,8 @@ MPP_RET h264e_config(void *ctx, RK_S32 cmd, void *param)
 
         if (mpp_cfg->rc_mode) {
             /* VBR / CBR mode */
-            RK_S32 max_qp = MPP_MAX(mpp_cfg->qp + 6, 48);
-            RK_S32 min_qp = MPP_MIN(mpp_cfg->qp - 6, 16);
+            RK_S32 max_qp = MPP_MAX(mpp_cfg->qp + 6, 51);
+            RK_S32 min_qp = MPP_MIN(mpp_cfg->qp - 6, 18);
 
             enc_rc_cfg->pictureRc       = 1;
             enc_rc_cfg->mbRc            = 1;
@@ -353,7 +353,7 @@ MPP_RET h264e_config(void *ctx, RK_S32 cmd, void *param)
         enc_rc_cfg->bitPerSecond = mpp_cfg->bps;
         enc_rc_cfg->gopLen = mpp_cfg->gop;
         enc_rc_cfg->fixedIntraQp = 0;
-        enc_rc_cfg->mbQpAdjustment = 3;
+        enc_rc_cfg->mbQpAdjustment = 0;
         enc_rc_cfg->hrdCpbSize = mpp_cfg->bps;
 
         enc->intraPicRate = enc_rc_cfg->intraPicRate;
@@ -437,6 +437,7 @@ MPP_RET h264e_config(void *ctx, RK_S32 cmd, void *param)
 MPP_RET h264e_callback(void *ctx, void *feedback)
 {
     H264ECtx *enc = (H264ECtx *)ctx;
+    H264EncIn *encIn = &(enc->encIn);
     regValues_s    *val = &(enc->asic.regs);
     h264e_feedback *fb  = (h264e_feedback *)feedback;
     H264EncOut *encOut  = &(enc->encOut);
@@ -484,6 +485,8 @@ MPP_RET h264e_callback(void *ctx, void *feedback)
         break;
     }
 
+    encIn->timeIncrement = 1;
+
     return MPP_OK;
 }
 
diff --git a/test/vpu_api_test.c b/test/vpu_api_test.c
index f658525d..ac129c07 100644
--- a/test/vpu_api_test.c
+++ b/test/vpu_api_test.c
@@ -343,11 +343,13 @@ static RK_S32 vpu_encode_demo(VpuApiDemoCmdContext_t *cmd)
     enc_param->height       = cmd->height;
     enc_param->format       = ENC_INPUT_YUV420_PLANAR;
     enc_param->rc_mode      = 0;
-    enc_param->bitRate      = 100000;
+    enc_param->bitRate      = 4000000;
     enc_param->framerate    = 25;
     enc_param->enableCabac  = 1;
     enc_param->cabacInitIdc = 0;
     enc_param->intraPicRate = 30;
+    enc_param->profileIdc = 66;
+    enc_param->levelIdc = 40;
 
     if ((ret = ctx->init(ctx, NULL, 0)) != 0) {
         mpp_log("init vpu api context fail, ret: 0x%X\n", ret);