diff --git a/src/Extension/H264Rtp.cpp b/src/Extension/H264Rtp.cpp
index 73435357..a729a1a3 100644
--- a/src/Extension/H264Rtp.cpp
+++ b/src/Extension/H264Rtp.cpp
@@ -169,8 +169,13 @@ bool H264RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtp) {
 }
 
 void H264RtpDecoder::outputFrame(const RtpPacket::Ptr &rtp, const H264Frame::Ptr &frame) {
-    //rtsp没有dts，那么根据pts排序算法生成dts
-    _dts_generator.getDts(frame->_pts, frame->_dts);
+    if (frame->dropAble()) {
+        //不参与dts生成
+        frame->_dts = frame->_pts;
+    } else {
+        //rtsp没有dts，那么根据pts排序算法生成dts
+        _dts_generator.getDts(frame->_pts, frame->_dts);
+    }
 
     if (frame->keyFrame() && _gop_dropped) {
         _gop_dropped = false;
diff --git a/src/Extension/H265Rtp.cpp b/src/Extension/H265Rtp.cpp
index f783c709..09247929 100644
--- a/src/Extension/H265Rtp.cpp
+++ b/src/Extension/H265Rtp.cpp
@@ -222,8 +222,13 @@ bool H265RtpDecoder::singleFrame(const RtpPacket::Ptr &rtp, const uint8_t *ptr,
 }
 
 void H265RtpDecoder::outputFrame(const RtpPacket::Ptr &rtp, const H265Frame::Ptr &frame) {
-    //rtsp没有dts，那么根据pts排序算法生成dts
-    _dts_generator.getDts(frame->_pts, frame->_dts);
+    if (frame->dropAble()) {
+        //不参与dts生成
+        frame->_dts = frame->_pts;
+    } else {
+        //rtsp没有dts，那么根据pts排序算法生成dts
+        _dts_generator.getDts(frame->_pts, frame->_dts);
+    }
 
     if (frame->keyFrame() && _gop_dropped) {
         _gop_dropped = false;