diff --git a/.vscode/settings.json b/.vscode/settings.json
index 52f58b2..c02039a 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -63,6 +63,7 @@
         "typeindex": "cpp",
         "typeinfo": "cpp",
         "valarray": "cpp",
-        "variant": "cpp"
+        "variant": "cpp",
+        "set": "cpp"
     }
 }
\ No newline at end of file
diff --git a/src/rtsp_manager.cpp b/src/rtsp_manager.cpp
index ca59b09..eeffdf5 100644
--- a/src/rtsp_manager.cpp
+++ b/src/rtsp_manager.cpp
@@ -25,17 +25,31 @@ void RTSPManager::init()
 // 创建 media factory
 GstRTSPMediaFactory *RTSPManager::create_media_factory(const Camera &cam)
 {
+    int out_width = cam.width;
+    int out_height = cam.height;
+
+    // 如果是 1280x960，则裁剪到 1280x720
+    std::string videocrop_str;
+    if (cam.width == 1280 && cam.height == 960)
+    {
+        out_height = 720;
+        // 使用 videocrop 元素从顶部裁剪 120 像素，总共裁剪 960->720
+        int crop_top = (960 - 720) / 2;
+        videocrop_str = " ! videocrop top=" + std::to_string(crop_top) + " bottom=" + std::to_string(crop_top);
+    }
+
     std::string launch_str =
         "( v4l2src device=" + cam.device +
         " ! video/x-raw,format=NV12,width=" + std::to_string(cam.width) +
         ",height=" + std::to_string(cam.height) +
         ",framerate=" + std::to_string(cam.fps) + "/1"
-                                                  " ! queue max-size-buffers=4 leaky=2" // 新增 queue，防止阻塞
+                                                  " ! queue max-size-buffers=4 leaky=2"
                                                   " ! videoconvert"
-                                                  " ! video/x-raw,format=NV12"          // 固定转换后的格式
-                                                  " ! queue max-size-buffers=4 leaky=2" // 再加一层 queue，隔离 mpph264enc
-                                                  " ! mpph264enc"
-                                                  " ! rtph264pay name=pay0 pt=96 )";
+                                                  " ! video/x-raw,format=NV12" +
+        videocrop_str +
+        " ! queue max-size-buffers=4 leaky=2"
+        " ! mpph264enc"
+        " ! rtph264pay name=pay0 pt=96 )";
 
     GstRTSPMediaFactory *factory = gst_rtsp_media_factory_new();
     gst_rtsp_media_factory_set_launch(factory, launch_str.c_str());