diff --git a/docker/install-scrypted-dependencies-mac.sh b/docker/install-scrypted-dependencies-mac.sh
index 6920237ec..af7547862 100755
--- a/docker/install-scrypted-dependencies-mac.sh
+++ b/docker/install-scrypted-dependencies-mac.sh
@@ -18,7 +18,11 @@ RUN() {
 }
 
 echo "Installing Scrypted dependencies..."
+# needed by scrypted-ffmpeg
+RUN brew install sdl2
+# gstreamer plugins
 RUN brew install gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-plugins-ugly
+# gst python bindings
 RUN brew install gst-python
 RUN pip3 install --upgrade pip
 RUN pip3 install aiofiles debugpy typing_extensions typing opencv-python