diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index ca4649c..95e02d1 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -73,7 +73,7 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
 
     const std::string record_rtmp = "rtmp://127.0.0.1:2935/" + app + "/" + stream + "?vhost=record";
 
-    std::string pipeline_str = "v4l2src name=src device=" + cam.device +
+    std::string pipeline_str = "v4l2src device=" + cam.device +
                                " io-mode=dmabuf "
                                "! video/x-raw,format=NV12,width=1920,height=1080,framerate=" +
                                std::to_string(cam.fps) +
@@ -81,27 +81,28 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
                                "! videoscale "
                                "! video/x-raw,width=" +
                                std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
-                               " ! queue max-size-buffers=2 leaky=downstream "
+                               " "
+                               "! queue max-size-buffers=2 leaky=downstream "
                                "! mpph264enc rc-mode=cbr bps=" +
                                std::to_string(cam.bitrate) + " gop=" + std::to_string(cam.fps) +
                                " header-mode=each-idr profile=baseline "
                                "! h264parse config-interval=1 "
                                "! tee name=t "
 
-                               // ========= 录像（永远启用）============
+                               // ===== record：永远稳定 =====
                                "t. ! queue max-size-buffers=8 leaky=downstream "
                                "! flvmux name=rec_mux streamable=true "
                                "! rtmpsink name=rec_sink location=\"" +
                                record_rtmp +
-                               "\" sync=false async=false drop-on-latency=true "
+                               "\" sync=false async=false "
 
-                               // ========= live（valve 控制）===========
+                               // ===== live：可随意开关 =====
                                "t. ! queue max-size-buffers=8 leaky=downstream "
                                "! valve name=live_valve drop=true "
                                "! queue max-size-buffers=8 leaky=downstream "
                                "! flvmux name=live_mux streamable=true "
                                "! rtmpsink name=live_sink location=\"" +
-                               live_rtmp + "\" sync=false async=false drop-on-latency=true ";
+                               live_rtmp + "\" sync=false async=false ";
 
     GError* err = nullptr;
     GstElement* pipeline = gst_parse_launch(pipeline_str.c_str(), &err);