diff --git a/plugins/publish/publish_node.cpp b/plugins/publish/publish_node.cpp
index 96a05f8..d4570b6 100644
--- a/plugins/publish/publish_node.cpp
+++ b/plugins/publish/publish_node.cpp
@@ -387,6 +387,14 @@ public:
             return false;
         }
 
+        // Ensure SPS/PPS (and VPS for H265) are emitted with IDR frames so RTSP clients can get SDP.
+        if (coding_ == MPP_VIDEO_CodingAVC || coding_ == MPP_VIDEO_CodingHEVC) {
+            MppEncHeaderMode header_mode = MPP_ENC_HEADER_MODE_EACH_IDR;
+            if (mpi_->control(ctx_, MPP_ENC_SET_HEADER_MODE, &header_mode) != MPP_OK) {
+                std::cerr << "[publish] MPP_ENC_SET_HEADER_MODE failed\n";
+            }
+        }
+
         RK_S32 timeout = 2000;
         mpi_->control(ctx_, MPP_SET_OUTPUT_TIMEOUT, &timeout);