修复4G串口打不开,程序启动失败问题

VideoProsessing/src/main.cpp

@@ -839,6 +839,7 @@ bool videoInit(VideoCapture &cap)
     cap.set(CAP_PROP_FRAME_HEIGHT, 480);
     cap.set(CAP_PROP_FPS, 30);
     cap.set(CAP_PROP_BUFFERSIZE, 1);
+
     // 尝试 MJPG，若不支持则忽略
     cap.set(CAP_PROP_FOURCC, VideoWriter::fourcc('M', 'J', 'P', 'G'));
     double fccv = cap.get(CAP_PROP_FOURCC);
@@ -887,6 +888,7 @@ bool processFrame(VideoCapture &cap, FILE *pipe, Mat &frame, int64 &count, chron
         this_thread::sleep_for(50ms);
         return true;
     }
+    
     handleFrame = frame;
 
     vector<Dection> destCopy;