diff --git a/hash_refs/mp4box-io-audio_opus.iamf-mp4-inspect.hash b/hash_refs/mp4box-io-audio_opus.iamf-mp4-inspect.hash
index c6024b81..a8e46c9f 100644
--- a/hash_refs/mp4box-io-audio_opus.iamf-mp4-inspect.hash
+++ b/hash_refs/mp4box-io-audio_opus.iamf-mp4-inspect.hash
@@ -1 +1 @@
-��w��~IMyD���
\ No newline at end of file
+� g>�*��\�p��'�
\ No newline at end of file
diff --git a/hash_refs/mp4box-mux-add-iamf.hash b/hash_refs/mp4box-mux-add-iamf.hash
index b17bd49f..8fe242d5 100644
--- a/hash_refs/mp4box-mux-add-iamf.hash
+++ b/hash_refs/mp4box-mux-add-iamf.hash
@@ -1 +1 @@
-y���V��
V�%%���B��|
\ No newline at end of file
+;ba���M����&˒���
\ No newline at end of file
diff --git a/hash_refs/reframer-iamf-ext-rewrite.hash b/hash_refs/reframer-iamf-ext-rewrite.hash
new file mode 100644
index 00000000..e69de29b
diff --git a/scripts/reframers.sh b/scripts/reframers.sh
index 313f94e6..6571d4cf 100755
--- a/scripts/reframers.sh
+++ b/scripts/reframers.sh
@@ -53,6 +53,7 @@ test_reframer "av1-obu" $MEDIA_DIR/auxiliary_files/video.av1 "video.obu"
 test_reframer "av1-ivf" $MEDIA_DIR/auxiliary_files/video.av1 "video.ivf"
 
 test_reframer "iamf" $MEDIA_DIR/auxiliary_files/audio_opus.iamf "audio.mp4"
+test_reframer "iamf-ext" "results/temp/reframer-iamf/audio.mp4" "audio.iamf"
 
 test_reframer "amr" $EXTERNAL_MEDIA_DIR/import/bear_audio.amr