diff --git a/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.cpp b/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.cpp
index 0a2475bec..5b6b925f8 100644
--- a/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.cpp
+++ b/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.cpp
@@ -118,13 +118,7 @@ void AutowareScreenCapturePanel::on_timer()
     size, CV_8UC3, const_cast<uchar *>(q_image.bits()),
     static_cast<size_t>(q_image.bytesPerLine()));
 
-  const auto q_size = screen->grabWindow(main_window_->winId())
-                        .toImage()
-                        .convertToFormat(QImage::Format_RGB888)
-                        .rgbSwapped()
-                        .size();
-
-  current_movie_size_ = cv::Size(q_size.width(), q_size.height());
+  size_ = size;
 
   if (is_buffering_) {
     buffer_.push_back(image.clone());
@@ -267,7 +261,6 @@ bool AutowareScreenCapturePanel::save_movie(const std::string & file_name)
 
   save(movie_, file_name);
 
-  // writer_.release();
   capture_to_mp4_button_ptr_->setText("waiting for capture");
   capture_to_mp4_button_ptr_->setStyleSheet("background-color: #00FF00;");
 
@@ -298,11 +291,11 @@ void AutowareScreenCapturePanel::save(
 
   writer.open(
     "capture/" + file_name + ros_time_label_->text().toStdString() + ".mp4", fourcc, rate_->value(),
-    current_movie_size_);
+    size_);
 
   for (const auto & frame : images) {
     cv::Mat resized_frame;
-    cv::resize(frame, resized_frame, current_movie_size_);
+    cv::resize(frame, resized_frame, size_);
     writer.write(resized_frame);
   }
 
diff --git a/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.hpp b/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.hpp
index ac0395f6b..4d8b78d52 100644
--- a/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.hpp
+++ b/common/tier4_screen_capture_rviz_plugin/src/screen_capture_panel.hpp
@@ -105,13 +105,12 @@ public Q_SLOTS:
   QSpinBox * rate_;
   QMainWindow * main_window_{nullptr};
 
-  cv::Size current_movie_size_;
+  cv::Size size_;
 
   std::deque<cv::Mat> movie_;
 
   std::deque<cv::Mat> buffer_;
 
-  // std::deque<std::pair<cv::Mat, rclcpp::Time>> frame_buffer_;
   // Size of the frame buffer (number of frames to keep in memory)
   // At 10 Hz capture rate, 100 frames correspond to approximately 10 seconds of video
   const size_t buffer_size_ = 100;