diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index 4ff4c74..46422a0 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -115,7 +115,7 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
 {
     const int fps = 30;
     const int bitrate = cam.bitrate;  // 3.5M~4M
-    const int gop = 15;
+    const int gop = 4;
 
     const std::string stream_name = cam.name;
     const std::string rtmp_url = "rtmp://127.0.0.1:1935/" + stream_name;