diff --git a/src/Extension/H264.cpp b/src/Extension/H264.cpp
index 2395159b..eeccd600 100644
--- a/src/Extension/H264.cpp
+++ b/src/Extension/H264.cpp
@@ -12,9 +12,10 @@
 #include "SPSParser.h"
 #include "Util/logger.h"
 #include "Util/base64.h"
+#include "Common/config.h"
 
-using namespace toolkit;
 using namespace std;
+using namespace toolkit;
 
 namespace mediakit {
 
@@ -248,7 +249,14 @@ public:
             _printer << "b=AS:" << bitrate << "\r\n";
         }
         _printer << "a=rtpmap:" << payload_type << " " << getCodecName() << "/" << 90000 << "\r\n";
-        _printer << "a=fmtp:" << payload_type << " packetization-mode=1; profile-level-id=";
+
+        /**
+         Single NAI Unit Mode = 0. // Single NAI mode (Only nals from 1-23 are allowed)
+         Non Interleaved Mode = 1，// Non-interleaved Mode: 1-23，24 (STAP-A)，28 (FU-A) are allowed
+         Interleaved Mode = 2,  // 25 (STAP-B)，26 (MTAP16)，27 (MTAP24)，28 (EU-A)，and 29 (EU-B) are allowed.
+         **/
+        GET_CONFIG(bool, h264_stap_a, Rtp::kH264StapA);
+        _printer << "a=fmtp:" << payload_type << " packetization-mode=" << h264_stap_a << "; profile-level-id=";
 
         uint32_t profile_level_id = 0;
         if (strSPS.length() >= 4) { // sanity check
diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index 1b08ca8d..7b2e06e9 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1816,11 +1816,17 @@ bool RtcConfigure::onCheckCodecProfile(const RtcCodecPlan &plan, CodecId codec)
     return true;
 }
 
+/**
+ Single NAI Unit Mode = 0. // Single NAI mode (Only nals from 1-23 are allowed)
+ Non Interleaved Mode = 1，// Non-interleaved Mode: 1-23，24 (STAP-A)，28 (FU-A) are allowed
+ Interleaved Mode = 2,  // 25 (STAP-B)，26 (MTAP16)，27 (MTAP24)，28 (EU-A)，and 29 (EU-B) are allowed.
+ **/
 void RtcConfigure::onSelectPlan(RtcCodecPlan &plan, CodecId codec) const {
     if (_rtsp_video_plan && codec == CodecH264 && getCodecId(_rtsp_video_plan->codec) == CodecH264) {
-        //h264时，设置packetization-mod为一致
+        // h264时，设置packetization-mod为一致
         auto mode = _rtsp_video_plan->fmtp[kMode];
-        plan.fmtp[kMode] = mode.empty() ? "0" : mode;
+        GET_CONFIG(bool, h264_stap_a, Rtp::kH264StapA);
+        plan.fmtp[kMode] = mode.empty() ? std::to_string(h264_stap_a) : mode;
     }
 }