diff --git a/cmake/DownloadPrebuilts.cmake b/cmake/DownloadPrebuilts.cmake
index 5c9f80a4..30c90aac 100644
--- a/cmake/DownloadPrebuilts.cmake
+++ b/cmake/DownloadPrebuilts.cmake
@@ -745,7 +745,7 @@ elseif ("${SYSTEM_NAME_UPPER}" STREQUAL "DARWIN" AND
     # OpenCV for MacOS-arm64 #
     ##########################
 
-    set(OpenCV_VERSION "4.7.0")
+    set(OpenCV_VERSION "4.9.0")
     set(OpenCV_PREBUILT_DIR "macArm64_opencv_${OpenCV_VERSION}")
     set(OpenCV_DIR "${PREBUILT_PATH}/${OpenCV_PREBUILT_DIR}")
     set(OpenCV_INCLUDE_DIR "${OpenCV_DIR}/include")
diff --git a/externals/prebuild_scripts/build_opencv_w_contrib_for_macArm64.sh b/externals/prebuild_scripts/build_opencv_w_contrib_for_macArm64.sh
index 0f56dc7c..0983816f 100755
--- a/externals/prebuild_scripts/build_opencv_w_contrib_for_macArm64.sh
+++ b/externals/prebuild_scripts/build_opencv_w_contrib_for_macArm64.sh
@@ -80,6 +80,8 @@ cmake \
 -DBUILD_TIFF=ON \
 -DWITH_WEBP=ON \
 -DBUILD_WEBP=ON \
+-DWITH_FFMPEG=ON \
+-DBUILD_FFMPEG=ON \
 -DWITH_OPENEXR=ON \
 -DBUILD_OPENEXR=ON \
 -DOPENCV_ENABLE_NONFREE=ON \
@@ -121,6 +123,8 @@ cmake \
 -DBUILD_TIFF=ON \
 -DWITH_WEBP=ON \
 -DBUILD_WEBP=ON \
+-DWITH_FFMPEG=ON \
+-DBUILD_FFMPEG=ON \
 -DWITH_OPENEXR=ON \
 -DBUILD_OPENEXR=ON \
 -DOPENCV_ENABLE_NONFREE=ON \