diff --git a/coin/provisioning/common/unix/install-ffmpeg-android.sh b/coin/provisioning/common/unix/install-ffmpeg-android.sh
index c4926305..8a855d31 100755
--- a/coin/provisioning/common/unix/install-ffmpeg-android.sh
+++ b/coin/provisioning/common/unix/install-ffmpeg-android.sh
@@ -8,6 +8,8 @@ set -ex
 source "${BASH_SOURCE%/*}/../unix/ffmpeg-installation-utils.sh"
 
 os="$1"
+# Optional parameter to set output installation directory. Useful for local builds.
+target_install_dir_param="$2"
 build_type=$(get_ffmpeg_build_type)
 ffmpeg_source_dir=$(download_ffmpeg)
 
@@ -109,5 +111,10 @@ else
     exit 1
 fi
 
+# If parameter is set, use it as the target output directory.
+if [ ! -z $target_install_dir_param ]; then
+  target_dir=$target_install_dir_param
+fi
+
 build_ffmpeg_android "$target_arch" "$target_dir"
 set_ffmpeg_dir_env_var "$envvar" "$target_dir"