diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index 5aff5b1..3348566 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -81,15 +81,20 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
                                ",framerate=" + std::to_string(fps) +
                                "/1 ! "
                                "tee name=t "
-                               "t. ! queue max-size-buffers=5 leaky=downstream ! "
+                               // 主分支：编码 + RTMP 推流
+                               "t. ! queue ! "
                                "mpph264enc bps=" +
                                std::to_string(bitrate) + " gop=" + std::to_string(fps) +
-                               " rc-mode=cbr ! "
+                               " ! "
                                "h264parse ! flvmux streamable=true name=mux "
-                               "audiotestsrc wave=silence ! audioconvert ! audioresample ! voaacenc ! aacparse ! mux. "
-                               "mux. ! rtmpsink location=\"" +
+                               // 静音音频轨道（避免 RTMP 播放器报错）
+                               "audiotestsrc wave=silence ! audioconvert ! audioresample ! "
+                               "voaacenc ! aacparse ! mux. "
+                               // 输出 RTMP
+                               "mux. ! rtmpsink name=sink location=\"" +
                                location +
-                               "\" sync=false async=false "
+                               "\" sync=false "
+                               // 第二分支：预留 (AI 分析/录制)
                                "t. ! queue ! fakesink sync=false";
 
     GError* error = nullptr;