diff --git a/build-win64.sh b/build-win64.sh
new file mode 100755
index 0000000..d235199
--- /dev/null
+++ b/build-win64.sh
@@ -0,0 +1,3 @@
+TOOLCHAIN=x86_64-w64-mingw32
+
+FFMPEG_OS=win64 OPENH264_ARCH=x86_64 OPENH264_OS=mingw_nt CC=$TOOLCHAIN-gcc CXX=$TOOLCHAIN-g++ AR=$TOOLCHAIN-ar bash build.sh --arch x86_64
\ No newline at end of file
diff --git a/build.sh b/build.sh
index 9132c4d..3e21969 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,5 @@
 export ARCH=$(uname -m)
+export JOBS=$(awk -v count=$(nproc) 'BEGIN { print ( int( count / 2 ) ) }')
 
 while [[ $# -gt 0 ]]; do
   case $1 in
diff --git a/scripts/build-ffmpeg.sh b/scripts/build-ffmpeg.sh
index 30c418b..092ecab 100644
--- a/scripts/build-ffmpeg.sh
+++ b/scripts/build-ffmpeg.sh
@@ -9,9 +9,10 @@ make distclean
 ./configure --disable-gpl --disable-nonfree --disable-doc --disable-network \
   --disable-ffprobe --disable-ffplay --enable-static --disable-shared \
   --enable-libopenh264 \
-  --prefix=$PREFIX --enable-cross-compile --arch=$ARCH --cc="clang -arch $ARCH" \
-  --pkg-config-flags="--static"
+  --prefix=$PREFIX --enable-cross-compile --arch=$ARCH \
+  --cc="$CC" --cxx="$CXX" \
+  --pkg-config-flags="--static" --target-os=$FFMPEG_OS
 
-make -j
+make -j$JOBS
 
-cp ffmpeg $outDir
+cp ffmpeg* $outDir
diff --git a/scripts/build-openh264.sh b/scripts/build-openh264.sh
index 36b340b..baf231d 100644
--- a/scripts/build-openh264.sh
+++ b/scripts/build-openh264.sh
@@ -16,11 +16,11 @@ git clone https://github.com/cisco/openh264 $projectDir -b v$OPENH264_VERSION --
 
 cd $projectDir
 
-args="PREFIX=$PREFIX ARCH=$ARCH"
+args="PREFIX=$PREFIX OS=$OPENH264_OS ARCH=$OPENH264_ARCH CC=$CC CXX=$CXX AR=$AR"
 
 make clean
 
-make -j $args
+make -j$JOBS $args
 
 make install-static $args