diff --git a/src/Extension/Frame.cpp b/src/Extension/Frame.cpp
index 5864908b..f51f5945 100644
--- a/src/Extension/Frame.cpp
+++ b/src/Extension/Frame.cpp
@@ -192,7 +192,7 @@ bool FrameMerger::willFlush(const Frame::Ptr &frame) const{
             switch (frame->getCodecId()) {
                 case CodecH264 : {
                     auto type = H264_TYPE(frame->data()[frame->prefixSize()]);
-                    if (frame->data()[frame->prefixSize()+1]&0x80 !=0 && type >=H264Frame::NAL_B_P && type<=H264Frame::NAL_IDR ) {// sei aud pps sps 不判断
+                    if ((frame->data()[frame->prefixSize()+1]&0x80) !=0 && type >=H264Frame::NAL_B_P && type<=H264Frame::NAL_IDR ) {// sei aud pps sps 不判断
                         //264 新一帧的开始，刷新输出
                         return true;
                     }else{
@@ -202,9 +202,12 @@ bool FrameMerger::willFlush(const Frame::Ptr &frame) const{
                     break;
                 }
                 case CodecH265 : {
-                    if (H265_TYPE(frame->data()[frame->prefixSize()]) == H265Frame::NAL_TRAIL_R) {
-                        //如果是265的TRAIL_R帧，那么也刷新输出
+                    auto type = H265_TYPE(frame->data()[frame->prefixSize()]);
+                    if ((type>=H265Frame::NAL_TRAIL_R &&type<= H265Frame::NAL_RSV_IRAP_VCL23) && ( (frame->data()[frame->prefixSize()+2]>>7 & 0x01) != 0)) {
+                        //first_slice_segment_in_pic_flag is frame start  
                         return true;
+                    }else{
+                        return false;
                     }
                     break;
                 }
diff --git a/src/Extension/H264Rtmp.cpp b/src/Extension/H264Rtmp.cpp
index 47f5192e..b3426fe8 100644
--- a/src/Extension/H264Rtmp.cpp
+++ b/src/Extension/H264Rtmp.cpp
@@ -183,7 +183,7 @@ void H264RtmpEncoder::inputFrame(const Frame::Ptr &frame) {
         }
     }
 
-    if(_lastPacket && (_lastPacket->time_stamp != frame->dts() || (pcData[1]&0x80 != 0 && type>=H264Frame::NAL_B_P && type<=H264Frame::NAL_IDR))) {
+    if(_lastPacket && (_lastPacket->time_stamp != frame->dts() || ((pcData[1]&0x80) != 0 && type>=H264Frame::NAL_B_P && type<=H264Frame::NAL_IDR))) {
         RtmpCodec::inputRtmp(_lastPacket);
         _lastPacket = nullptr;
     }
diff --git a/src/Extension/H265.cpp b/src/Extension/H265.cpp
index 76df36a7..a4b2dde6 100644
--- a/src/Extension/H265.cpp
+++ b/src/Extension/H265.cpp
@@ -64,10 +64,11 @@ bool H265Frame::configFrame() const {
 }
 
 bool H265Frame::isKeyFrame(int type, const char *ptr) {
-    if (!ptr || type != NAL_IDR_W_RADL) {
-        return type >= NAL_BLA_W_LP && type <= NAL_RSV_IRAP_VCL23;
+    if(ptr){
+        return (((*((uint8_t *) ptr + 2)) >> 7) & 0x01) == 1 && (type == NAL_IDR_N_LP || type == NAL_IDR_W_RADL);
     }
-    return (((*((uint8_t *) ptr + 2)) >> 7) & 0x01) == 1;
+    return false;
+    
 }
 
 H265Frame::H265Frame(){
diff --git a/src/Extension/H265Rtmp.cpp b/src/Extension/H265Rtmp.cpp
index 3a8c32ab..f863b502 100644
--- a/src/Extension/H265Rtmp.cpp
+++ b/src/Extension/H265Rtmp.cpp
@@ -169,7 +169,7 @@ void H265RtmpEncoder::inputFrame(const Frame::Ptr &frame) {
         return;
     }
 
-    if (_lastPacket && (_lastPacket->time_stamp != frame->dts() || type == H265Frame::NAL_TRAIL_R)) {
+    if (_lastPacket && (_lastPacket->time_stamp != frame->dts() || (type >=H264Frame::NAL_B_P && type<=H264Frame::NAL_IDR && (pcData[2]>>7 &0x01) !=0))) {
         RtmpCodec::inputRtmp(_lastPacket);
         _lastPacket = nullptr;
     }