diff --git a/stream_pipeline.py b/stream_pipeline.py
index c057a44..3e699f8 100644
--- a/stream_pipeline.py
+++ b/stream_pipeline.py
@@ -134,8 +134,8 @@ def main():
             if os.path.isfile(file_path):
                 os.unlink(file_path)
 
-    for fid, img in subimg_list.items():
-        cv2.imwrite(f'{save_path}/frame_{fid}.jpg', img)
+    for i, img in enumerate(subimg_list):
+        img.save(f'{save_path}/frame_{i}.jpg')
     
     print(f'Finish crop subimages {stream_dict["barcode"]}.')