diff --git a/Source_Files/main.cpp b/Source_Files/main.cpp
index cd71b93..50f4dd6 100644
--- a/Source_Files/main.cpp
+++ b/Source_Files/main.cpp
@@ -3,7 +3,7 @@
 
 int main(int argc, char *argv[])
 {
-    std::cout<<"ximeaAirborneSystem 版本："<< "42." <<std::endl;
+    std::cout<<"ximeaAirborneSystem 版本："<< "43." <<std::endl;
     QCoreApplication a(argc, argv);
 
     //UdpServer* x=new UdpServer();
diff --git a/Source_Files/ximeaimager.cpp b/Source_Files/ximeaimager.cpp
index b5f1f4c..7c326e9 100644
--- a/Source_Files/ximeaimager.cpp
+++ b/Source_Files/ximeaimager.cpp
@@ -1232,8 +1232,8 @@ void PushFlow::encodePushFlow()
     codecContext->height = m_iHeight;
     codecContext->time_base = {1, m_iFramerateVideo};
     codecContext->pix_fmt = AV_PIX_FMT_YUV420P;  // 设置为YUV420P格式
-    codecContext->gop_size = 1;//多少帧产生一组关键帧
-    codecContext->max_b_frames = 1;//b帧，参考帧
+    codecContext->gop_size = 50;//多少帧产生一组关键帧
+    codecContext->max_b_frames = 0;//b帧，参考帧：设置为1会导致视频回退的现象
 //    codecContext->bit_rate = 1000000; // 设置比特率为 1000000
 
     // 打开视频编码器