diff --git a/samples/bypass_model/README.md b/samples/bypass_model/README.md
index 5616fb718..ce5e301a6 100644
--- a/samples/bypass_model/README.md
+++ b/samples/bypass_model/README.md
@@ -56,7 +56,7 @@ A result video can be viewed:
 - in a player using `rtsp://127.0.0.1:554/stream/video-with-preprocessed-frame
 
 The video consists of original video stream and the pre-processed video stream side by side from left to right. The white background highlights the original video frame because its size is different from the size of the pre-processed frame.
-The pre-processed frame has a black background at the bottom, which is the result of the `maintain_aspect_ratio` flag.
+The pre-processed frame has a black background to match the aspect ratio of the original frame, i.e. `maintain_aspect_ratio` flag is set to `true`. The frame is centered on the background, as the `symmetric_padding` flag is set to `true`.
 
 Example output frame:
 ![](assets/result.jpg)
diff --git a/samples/bypass_model/assets/result.jpg b/samples/bypass_model/assets/result.jpg
index 7e117674d..3c015d200 100644
--- a/samples/bypass_model/assets/result.jpg
+++ b/samples/bypass_model/assets/result.jpg
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:c99bcc5afd440a352ffdc6de22fa48a2b8fdf1b17817da04a8def232e56405bf
-size 172247
+oid sha256:bff090fd42174a7f99940f56151a8f25c2601ae69b59947f95c124590860c5d8
+size 175448
diff --git a/samples/bypass_model/demo.yml b/samples/bypass_model/demo.yml
index f0d47553a..54687fefe 100644
--- a/samples/bypass_model/demo.yml
+++ b/samples/bypass_model/demo.yml
@@ -43,6 +43,7 @@ pipeline:
           shape: ${parameters.result_shape}
           # preprocessing settings
           maintain_aspect_ratio: true
+          symmetric_padding: true
 
         # configuration of model output
         output: