diff --git a/samples/device/camera.cc b/samples/device/camera.cc
index e225ccc..dd5afb8 100644
--- a/samples/device/camera.cc
+++ b/samples/device/camera.cc
@@ -120,8 +120,9 @@ int main(int argc, char *argv[]) {
         right_data.frame->data());
 
     cv::Mat img;
+    cv::cvtColor(left_img, left_img, cv::COLOR_YUV2BGR_YUY2);
+    cv::cvtColor(right_img, right_img, cv::COLOR_YUV2BGR_YUY2);
     cv::hconcat(left_img, right_img, img);
-    cv::cvtColor(img, img, cv::COLOR_YUV2BGR_YUY2);
     cv::imshow("frame", img);
 
     char key = static_cast<char>(cv::waitKey(1));
diff --git a/tools/dataset/dataset.cc b/tools/dataset/dataset.cc
index 1fea9c9..95a92f6 100644
--- a/tools/dataset/dataset.cc
+++ b/tools/dataset/dataset.cc
@@ -70,7 +70,8 @@ void Dataset::SaveStreamData(
     ss << writer->outdir << OS_SEP << std::dec
        << std::setw(IMAGE_FILENAME_WIDTH) << std::setfill('0') << seq << ".png";
     cv::Mat img(
-        data.frame->height(), data.frame->width(), CV_8UC1, data.frame->data());
+        data.frame->height(), data.frame->width(), CV_8UC2, data.frame->data());
+    cv::cvtColor(img, img, cv::COLOR_YUV2BGR_YUY2);
     cv::imwrite(ss.str(), img);
   }
   ++stream_counts_[stream];
diff --git a/tools/dataset/record.cc b/tools/dataset/record.cc
index e3de362..5ecdc14 100644
--- a/tools/dataset/record.cc
+++ b/tools/dataset/record.cc
@@ -80,12 +80,14 @@ int main(int argc, char *argv[]) {
     auto &&left_frame = left_datas.back().frame;
     auto &&right_frame = right_datas.back().frame;
     cv::Mat left_img(
-        left_frame->height(), left_frame->width(), CV_8UC1, left_frame->data());
+        left_frame->height(), left_frame->width(), CV_8UC2, left_frame->data());
     cv::Mat right_img(
-        right_frame->height(), right_frame->width(), CV_8UC1,
+        right_frame->height(), right_frame->width(), CV_8UC2,
         right_frame->data());
 
     cv::Mat img;
+    cv::cvtColor(left_img, left_img, cv::COLOR_YUV2BGR_YUY2);
+    cv::cvtColor(right_img, right_img, cv::COLOR_YUV2BGR_YUY2);
     cv::hconcat(left_img, right_img, img);
     cv::imshow("frame", img);