diff --git a/config.json b/config.json
index fc5b64a..0aef9c1 100644
--- a/config.json
+++ b/config.json
@@ -14,7 +14,7 @@
       "device": "/dev/video11",
       "name": "AHD1",
       "enabled": true,
-      "resolution": "720p",
+      "bitrate": 2000000,
       "width": 1280,
       "height": 720,
       "fps": 30
@@ -23,7 +23,7 @@
       "device": "/dev/video12",
       "name": "AHD2",
       "enabled": false,
-      "resolution": "720p",
+      "bitrate": 2000000,
       "width": 1280,
       "height": 720,
       "fps": 30
@@ -32,7 +32,7 @@
       "device": "/dev/video13",
       "name": "AHD3",
       "enabled": false,
-      "resolution": "720p",
+      "bitrate": 2000000,
       "width": 1280,
       "height": 720,
       "fps": 30
@@ -41,7 +41,7 @@
       "device": "/dev/video14",
       "name": "AHD4",
       "enabled": false,
-      "resolution": "720p",
+      "bitrate": 2000000,
       "width": 1280,
       "height": 720,
       "fps": 30
@@ -50,7 +50,7 @@
       "device": "/dev/video3",
       "name": "AHD5",
       "enabled": false,
-      "resolution": "1080p",
+      "bitrate": 2000000,
       "width": 1920,
       "height": 1080,
       "fps": 30
@@ -59,7 +59,7 @@
       "device": "/dev/video2",
       "name": "AHD6",
       "enabled": false,
-      "resolution": "1080p",
+      "bitrate": 2000000,
       "width": 1920,
       "height": 1080,
       "fps": 30
@@ -68,7 +68,7 @@
       "device": "/dev/video1",
       "name": "AHD7",
       "enabled": false,
-      "resolution": "1080p",
+      "bitrate": 2000000,
       "width": 1920,
       "height": 1080,
       "fps": 30
@@ -77,7 +77,7 @@
       "device": "/dev/video0",
       "name": "AHD8",
       "enabled": false,
-      "resolution": "1080p",
+      "bitrate": 2000000,
       "width": 1920,
       "height": 1080,
       "fps": 30
diff --git a/include/app_config.hpp b/include/app_config.hpp
index 963c43c..921eabe 100644
--- a/include/app_config.hpp
+++ b/include/app_config.hpp
@@ -20,6 +20,7 @@ struct Camera
     std::string device;
     std::string name;
     int width, height, fps;
+    int bitrate; // 新增码率字段 (bps)
     bool enabled;
 };
 
@@ -95,10 +96,12 @@ struct AppConfig
                 cam.width = c.value("width", 1280);
                 cam.height = c.value("height", 720);
                 cam.fps = c.value("fps", 30);
+                cam.bitrate = c.value("bitrate", 2000000);
                 cam.enabled = c.value("enabled", false);
                 cfg.cameras.push_back(cam);
                 LOG_INFO("[Config] Loaded camera: " + cam.name +
-                         " (" + cam.device + "), enabled=" + std::to_string(cam.enabled));
+                         " (" + cam.device + "), enabled=" + std::to_string(cam.enabled) +
+                         ", bitrate=" + std::to_string(cam.bitrate));
             }
         }
 
diff --git a/src/rtsp_manager.cpp b/src/rtsp_manager.cpp
index cf17d15..488d83f 100644
--- a/src/rtsp_manager.cpp
+++ b/src/rtsp_manager.cpp
@@ -36,10 +36,11 @@ GstRTSPMediaFactory *RTSPManager::create_media_factory(const Camera &cam)
         ",height=" + std::to_string(out_height) +
         ",framerate=" + std::to_string(cam.fps) + "/1"
                                                   " ! queue max-size-buffers=1 leaky=downstream" // 最小队列
-                                                  " ! mpph264enc bps=2000000 gop=" +
-        std::to_string(cam.fps) + "  " // 固定 4Mbps
-                                  " ! h264parse"
-                                  " ! rtph264pay name=pay0 pt=96 config-interval=1 )"; // 每秒发送 SPS/PPS
+                                                  " ! mpph264enc bps=" +
+        std::to_string(cam.bitrate) +
+        " gop=" + std::to_string(cam.fps) + // GOP 设置为 1 秒
+        " ! h264parse"
+        " ! rtph264pay name=pay0 pt=96 config-interval=1 )"; // 每秒发送 SPS/PPS
 
     GstRTSPMediaFactory *factory = gst_rtsp_media_factory_new();
     gst_rtsp_media_factory_set_launch(factory, launch_str.c_str());