diff --git a/web/src/main/java/com/zhehekeji/web/service/CameraService.java b/web/src/main/java/com/zhehekeji/web/service/CameraService.java
index f954fc2..f585d9b 100644
--- a/web/src/main/java/com/zhehekeji/web/service/CameraService.java
+++ b/web/src/main/java/com/zhehekeji/web/service/CameraService.java
@@ -188,15 +188,16 @@ public class CameraService extends ServiceImpl<CameraMapper,Camera> {
      * @return
      */
     public List<Camera> allCameras1(){
-
-
-        List<Camera> cameras = cameraMapper.selectList(new QueryWrapper<>());
+        int count = configProperties.getVideoStyleConfig().getVideoStyleColumn() * configProperties.getVideoStyleConfig().getVideoStyleRow();
+        int group = 0 ;
+        List<Camera> cameras = cameraMapper.selectList(new QueryWrapper<Camera>().last("limit "+group+","+count));
         return cameras;
     }
 
     public List<Camera> allCameras2(){
-
-        List<Camera> cameras = cameraMapper.selectByMap(new HashMap<>());
+        int count = configProperties.getVideoStyleConfig().getVideoStyleColumn() * configProperties.getVideoStyleConfig().getVideoStyleRow();
+        int group = 1*  count;
+        List<Camera> cameras = cameraMapper.selectList(new QueryWrapper<Camera>().last("limit "+group+","+count));
         return cameras;
     }
 
diff --git a/web/src/main/resources/libs/MvCameraControlWrapper.jar b/web/src/main/resources/libs/MvCameraControlWrapper.jar
new file mode 100644
index 0000000..3e2f591
Binary files /dev/null and b/web/src/main/resources/libs/MvCameraControlWrapper.jar differ
diff --git a/web/src/main/resources/libs/opencv-480.jar b/web/src/main/resources/libs/opencv-480.jar
new file mode 100644
index 0000000..71a14d3
Binary files /dev/null and b/web/src/main/resources/libs/opencv-480.jar differ