diff --git a/build-mac-arm64.sh b/build-mac-arm64.sh
new file mode 100755
index 0000000..59e45be
--- /dev/null
+++ b/build-mac-arm64.sh
@@ -0,0 +1,5 @@
+export OPENH264_ARCH=arm64
+export OPENH264_OS=darwin
+export FFMPEG_ARCH=arm64
+
+bash build.sh --arch arm64
diff --git a/build.sh b/build.sh
index bdb13b7..09cc5c5 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,10 @@ export ARCH=$(uname -m)
 # do not use all cpus because my computer dies
 export JOBS=$(awk -v count=$(nproc) 'BEGIN { print ( int( count - 1 ) ) }')
 
+if [[ "$(uname)" == "Darwin" ]]; then
+  export JOBS=$(awk -v count=$(sysctl -n hw.ncpu) 'BEGIN { print ( int ( count - 1 ) ) }')
+fi
+
 while [[ $# -gt 0 ]]; do
   case $1 in
     --arch)
diff --git a/scripts/build-ffmpeg.sh b/scripts/build-ffmpeg.sh
index f2d542e..8ed9c7a 100644
--- a/scripts/build-ffmpeg.sh
+++ b/scripts/build-ffmpeg.sh
@@ -12,15 +12,13 @@ cp -r $amfPath/amf/public/include $PREFIX/include/AMF
 
 make distclean
 
-flags="--cc=$CC --cxx=$CXX"
-
 if [[ $FFMPEG_MSVC == 1 ]]; then
   flags="--toolchain=msvc"
 fi
 
-./configure --disable-gpl --disable-nonfree --disable-doc --disable-network \
+LDFLAGS="-arch $ARCH" ./configure --disable-gpl --disable-nonfree --disable-doc --disable-network \
   --disable-ffprobe --disable-ffplay --enable-static --disable-shared \
-  --enable-libopenh264 \
+  --enable-libopenh264 --cc="${CC:-clang -arch $ARCH}" --cxx="${CXX:-g++ -arch $ARCH}" \
   --prefix=$PREFIX --enable-cross-compile --arch=$ARCH \
   --pkg-config-flags="--static" --target-os=$FFMPEG_OS \
   ${flags} ${FFBUILD_FLAGS}
diff --git a/scripts/build-openh264.sh b/scripts/build-openh264.sh
index baf231d..569dfc4 100644
--- a/scripts/build-openh264.sh
+++ b/scripts/build-openh264.sh
@@ -16,7 +16,7 @@ git clone https://github.com/cisco/openh264 $projectDir -b v$OPENH264_VERSION --
 
 cd $projectDir
 
-args="PREFIX=$PREFIX OS=$OPENH264_OS ARCH=$OPENH264_ARCH CC=$CC CXX=$CXX AR=$AR"
+args="PREFIX=$PREFIX OS=$OPENH264_OS ARCH=$OPENH264_ARCH CC=\"${CC:-clang}\" CXX=\"${CXX:-g++}\" AR=\"${AR:-ar}\""
 
 make clean