diff --git a/README.md b/README.md
index e99ddd3..eb9a22c 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,6 @@ This mod adds ffmpeg to lazylibrarian, to be installed/updated during container
 
 In lazylibrarian docker arguments, set an environment variable `DOCKER_MODS=linuxserver/mods:lazylibrarian-ffmpeg`
 
-If adding multiple mods, enter them in an array separated by `|`, such as `DOCKER_MODS=linuxserver/mods:lazylibrarian-ffmpeg|linuxserver/calibre-web:calibre`
+If adding multiple mods, enter them in an array separated by `|`, such as `DOCKER_MODS=linuxserver/mods:lazylibrarian-ffmpeg|linuxserver/mods:universal-calibre`
 
 To enable it you can set the ffmpeg path under Settings > Processing > External Programs to `ffmpeg` in the LazyLibrarian Web UI.
diff --git a/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/dependencies.d/init-mods b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/dependencies.d/init-mods
new file mode 100644
index 0000000..e69de29
diff --git a/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/run b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/run
new file mode 100755
index 0000000..a0eee32
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/run
@@ -0,0 +1,8 @@
+#!/usr/bin/with-contenv bash
+
+if ! dpkg -s ffmpeg >/dev/null 2>&1; then
+    echo "**** Adding ffmpeg to package install list ****"
+    echo "ffmpeg" >> /mod-repo-packages-to-install.list
+else
+    echo "**** ffmpeg already installed, skipping ****"
+fi
diff --git a/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/type b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/type
new file mode 100644
index 0000000..3d92b15
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/type
@@ -0,0 +1 @@
+oneshot
\ No newline at end of file
diff --git a/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/up b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/up
new file mode 100644
index 0000000..2c24b12
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/up
@@ -0,0 +1 @@
+/etc/s6-overlay/s6-rc.d/init-mod-lazylibrarian-ffmpeg-add-package/run
\ No newline at end of file
diff --git a/root/etc/s6-overlay/s6-rc.d/init-mods-package-install/dependencies.d/init-mod-lazylibrarian-ffmpeg-add-package b/root/etc/s6-overlay/s6-rc.d/init-mods-package-install/dependencies.d/init-mod-lazylibrarian-ffmpeg-add-package
new file mode 100644
index 0000000..e69de29
diff --git a/root/etc/s6-overlay/s6-rc.d/user/contents.d/init-mod-lazylibrarian-ffmpeg-add-package b/root/etc/s6-overlay/s6-rc.d/user/contents.d/init-mod-lazylibrarian-ffmpeg-add-package
new file mode 100644
index 0000000..e69de29