diff --git a/scripts/build.sh b/scripts/build.sh
index 885a71e..dfc7167 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,5 +1,50 @@
 #!/bin/bash
 
+usage() {
+     echo "./scripts/build.sh [-h] [-p] [-o] [r] [-a]"
+     echo -e "\th: display this help output"
+     echo -e "\tp: build svt-av1-psy with dovi library"
+     echo -e "\to: build other encoders x264/5 and vpx"
+     echo -e "\tr: build rockchip media libraries" 
+}
+
+update_git() {
+     git config pull.rebase false
+     git stash && git stash drop
+     git pull
+}
+
+OPTS='hpao:'
+NUM_OPTS=$(echo $OPTS | tr ':' '\n' | wc -l)
+MIN_OPT=0
+# using all
+MAX_OPT=$(( NUM_OPTS ))
+test "$#" -lt $MIN_OPT && echo "not enough arguments" && usage && exit 1
+test "$#" -gt $MAX_OPT && echo "too many arguments" && usage && exit 1
+while getopts "$OPTS" flag; do
+    case "${flag}" in
+        h)
+               usage
+               exit 0
+               ;;
+        p)
+               export BUILD_PSY="true"
+               echo "building psy"
+               ;;
+        o)
+               export BUILD_OTHERS="true"
+               echo "building other encoders"
+               ;;
+        r)
+               export BUILD_ROCKCHIP="true"
+               echo "building rockchip media platform"
+               ;;
+        *)
+               echo "building default"
+               ;;
+    esac
+done
+
 BASE_DIR=$(pwd)
 SVT_DIR="$BASE_DIR/svt"
 RAV1E_DIR="$BASE_DIR/rav1e"
@@ -13,9 +58,6 @@ RKRGA_DIR="$BASE_DIR/rkrga"
 DOVI_DIR="$BASE_DIR/dovi"
 SVT_PSY_DIR="$BASE_DIR/svt-psy"
 
-# build svt-psy + dovi_tool
-BUILD_PSY="true"
-
 # clone
 git clone --depth 1 https://gitlab.com/AOMediaCodec/SVT-AV1.git "$SVT_DIR"
 git clone --depth 1 https://github.com/quietvoid/dovi_tool "$DOVI_DIR"
@@ -43,10 +85,8 @@ export PATH="/usr/lib/ccache/:$PATH"
 
 # rockchip ffmpeg libs
 FFMPEG_ROCKCHIP=""
-IS_ROCKCHIP=$(uname -r | grep "rockchip" > /dev/null && echo "yes" || echo "no")
-# disabling due to decode errors
-IS_ROCKCHIP="no"
-if [[ "$IS_ROCKCHIP" == "yes" ]]
+# IS_ROCKCHIP=$(uname -r | grep "rockchip" > /dev/null && echo "yes" || echo "no")
+if [[ "$BUILD_ROCKCHIP" == "true" ]]
 then
   FFMPEG_ROCKCHIP="--enable-gpl --enable-version3 --enable-libdrm --enable-rkmpp --enable-rkrga"
   FFMPEG_DIR="$BASE_DIR/ffmpeg-rkmpp"
@@ -58,8 +98,7 @@ then
 
   # build mpp
   cd "$RKMPP_DIR/" || exit
-  git stash && git stash drop
-  git pull
+  update_git
   rm -rf mpp_build.user
   mkdir mpp_build.user
   cd mpp_build.user || exit
@@ -74,8 +113,7 @@ then
 
   # build rga
   cd "$RKRGA_DIR" || exit
-  git stash && git stash drop
-  git pull
+  update_git
   rm -rf rga_build.user
   mkdir rga_build.user
   cd rga_build.user || exit
@@ -90,8 +128,7 @@ if [[ "$BUILD_PSY" == "true" ]];
 then
      # build dovi_tool
      cd "$DOVI_DIR/" || exit
-     git stash && git stash drop
-     git pull
+     update_git
      rm -rf ffmpeg_build.user && mkdir ffmpeg_build.user || exit
      source "$HOME/.cargo/env" # for good measure
      cargo clean
@@ -110,7 +147,7 @@ then
 
      # build svt-avt-psy
      cd "$SVT_PSY_DIR/" || exit
-     git pull
+     update_git
      rm -rf build_svt.user
      mkdir build_svt.user
      cd build_svt.user || exit
@@ -125,7 +162,7 @@ then
 else
      # build svt-av1
      cd "$SVT_DIR/" || exit
-     git pull
+     update_git
      rm -rf build_svt.user
      mkdir build_svt.user
      cd build_svt.user || exit
@@ -141,8 +178,7 @@ fi
 
 # build rav1e
 cd "$RAV1E_DIR/" || exit
-git stash && git stash drop
-git pull
+update_git
 rm -rf ffmpeg_build.user && mkdir ffmpeg_build.user || exit
 source "$HOME/.cargo/env" # for good measure
 cargo clean
@@ -156,8 +192,7 @@ sudo cp ./include/* /usr/local/include/ -r || exit
 
 # build aom
 cd "$AOM_DIR/" || exit
-git stash && git stash drop
-git pull
+update_git
 rm -rf build_aom.user
 mkdir build_aom.user
 cd build_aom.user || exit
@@ -171,8 +206,7 @@ sudo make install || exit
 
 # build libvmaf
 cd "$VMAF_DIR/libvmaf" || exit
-git stash && git stash drop
-git pull
+update_git
 python3 -m virtualenv .venv
 source .venv/bin/activate
 rm -rf build.user
@@ -186,8 +220,7 @@ sudo ninja -vC build.user install || exit
 
 # build dav1d
 cd "$DAV1D_DIR" || exit
-git stash && git stash drop
-git pull
+update_git
 rm -rf build.user
 mkdir build.user
 cd build.user || exit
@@ -198,8 +231,7 @@ sudo ninja -vC build.user install || exit
 
 # build opus
 cd "$OPUS_DIR" || exit
-git stash && git stash drop
-git pull
+update_git
 ./autogen.sh || exit
 export CFLAGS="-O3 -flto $COMP_FLAGS"
 ./configure || exit
@@ -214,8 +246,7 @@ sudo ldconfig
 
 # build ffmpeg
 cd "$FFMPEG_DIR/" || exit
-git stash && git stash drop
-git pull
+update_git
 export PKG_CONFIG_PATH+=":/usr/local/lib/pkgconfig"
 make clean
 ./configure --enable-libsvtav1 --enable-librav1e \
@@ -237,3 +268,4 @@ source ~/.profile
 ffmpeg -encoders 2>&1 | grep "av1"
 ffmpeg -encoders 2>&1 | grep "rkmpp"
 ffmpeg -decoders 2>&1 | grep "rkmpp"
+exit 0