diff --git a/Dockerfile.cpu b/Dockerfile.cpu
index 2bc5fc4168..f3a66fa87f 100755
--- a/Dockerfile.cpu
+++ b/Dockerfile.cpu
@@ -1,7 +1,8 @@
 FROM tensorflow/tensorflow:1.12.0-py3
 
-RUN apt-get update -qq -y \
- && apt-get install -y libsm6 libxrender1 libxext-dev python3-tk\
+RUN add-apt-repository -y ppa:jonathonf/ffmpeg-4 \
+ && apt-get update -qq -y \
+ && apt-get install -y libsm6 libxrender1 libxext-dev python3-tk ffmpeg \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
 
diff --git a/Dockerfile.gpu b/Dockerfile.gpu
index 4a7f94a222..e1e32f2f26 100755
--- a/Dockerfile.gpu
+++ b/Dockerfile.gpu
@@ -1,7 +1,8 @@
 FROM tensorflow/tensorflow:1.12.0-gpu-py3
 
-RUN apt-get update -qq -y \
- && apt-get install -y libsm6 libxrender1 libxext-dev python3-tk\
+RUN add-apt-repository -y ppa:jonathonf/ffmpeg-4 \
+ && apt-get update -qq -y \
+ && apt-get install -y libsm6 libxrender1 libxext-dev python3-tk ffmpeg \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
 
diff --git a/INSTALL.md b/INSTALL.md
index 7b9500628f..5a7e1fb51d 100755
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -212,7 +212,7 @@ INFO    1. Install Docker
             deepfakes-gpu
         
         5. Open a new terminal to interact with the project
-        docker exec faceswap-gpu python /srv/tools.py gui
+        docker exec faceswap-gpu python /srv/faceswap.py gui
 ```
 
 A successful setup log, without docker.