diff --git a/builder/dockerfile.ubuntu_focal.build b/builder/dockerfile.ubuntu_focal.build
index 03f5253..57c7373 100644
--- a/builder/dockerfile.ubuntu_focal.build
+++ b/builder/dockerfile.ubuntu_focal.build
@@ -13,7 +13,8 @@ RUN apt-get update && \
 RUN apt-get update && apt-get install -y --no-install-recommends tzdata
 RUN apt-get update && apt-get -y build-dep xorg-server libxfont-dev
 RUN apt-get update && apt-get -y install ninja-build nasm git vim wget curl
-RUN apt-get update && apt-get -y install libtbb-dev libpng-dev libtiff-dev libgif-dev libavcodec-dev libssl-dev libxrandr-dev libxcursor-dev
+RUN apt-get update && apt-get -y install libtbb-dev libpng-dev libtiff-dev libgif-dev libavcodec-dev libssl-dev libxrandr-dev \
+    libxcursor-dev libavformat-dev libswscale-dev
 
 ENV SCRIPTS_DIR=/tmp/scripts
 COPY builder/scripts $SCRIPTS_DIR