diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index d10c3ba..bba383b 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -68,35 +68,38 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
 
     const std::string live_rtmp = "rtmp://36.153.162.171:19435/" + app + "/" + stream + "?vhost=live";
 
-    std::string pipeline_str = "v4l2src device=" + cam.device +
+    std::string pipeline_str = "v4l2src name=src device=" + cam.device +
                                " io-mode=dmabuf "
+
                                "! video/x-raw,format=NV12,"
                                "width=" +
-                               std::to_string(width) + ",height=" + std::to_string(height) +
-                               ",framerate=" + std::to_string(fps) +
+                               std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
+                               ",framerate=" + std::to_string(cam.fps) +
                                "/1 "
 
-                               "! queue max-size-buffers=4 leaky=downstream "
+                               "! queue max-size-buffers=4 max-size-time=0 leaky=downstream "
 
                                "! mpph264enc "
                                "rc-mode=cbr "
                                "bps=" +
-                               std::to_string(bitrate) +
+                               std::to_string(cam.bitrate) +
                                " "
                                "gop=" +
-                               std::to_string(fps) +
+                               std::to_string(cam.fps) +
                                " "
                                "header-mode=each-idr "
 
                                "! h264parse config-interval=1 "
 
-                               // ⭐ 核心修复：统一 DTS / PTS
+                               // ⭐⭐ 核心修复：时间戳整形（解决 DTS 回退 / WebRTC 抽风）
                                "! identity sync=true single-segment=true "
 
                                "! flvmux streamable=true "
 
                                "! rtmpsink location=\"" +
-                               live_rtmp + "\" sync=false async=false";
+                               live_rtmp +
+                               "\" "
+                               "sync=false async=false";
 
     GError* error = nullptr;
     GstElement* pipeline = gst_parse_launch(pipeline_str.c_str(), &error);