Added documentation on installation of `ffmpeg` and `ImageMagick` dependencies.

10 files changed, 31 insertions, 11 deletions

diff --git a/docs/installation/alpine_linux_en.md b/docs/installation/alpine_linux_en.md
index a5683f18c..0b9f5cdae 100644
--- a/docs/installation/alpine_linux_en.md
+++ b/docs/installation/alpine_linux_en.md
@@ -13,6 +13,8 @@ It assumes that you have administrative rights, either as root or a user with [s
 * `erlang-parsetools`
 * `erlang-xmerl`
 * `git`
+* `ffmpeg`
+* `ImageMagick`
 * Development Tools
 * `cmake`
 
@@ -56,6 +58,13 @@ sudo apk add erlang erlang-runtime-tools erlang-xmerl elixir
 ```shell
 sudo apk add erlang-eldap
 ```
+
+### Install ffmpeg and ImageMagick
+
+```shell
+sudo apk add ffmpeg imagemagick
+```
+
 ### Install PostgreSQL
 
 * Install Postgresql server:
diff --git a/docs/installation/arch_linux_en.md b/docs/installation/arch_linux_en.md
index 7fb69dd60..38bb82432 100644
--- a/docs/installation/arch_linux_en.md
+++ b/docs/installation/arch_linux_en.md
@@ -10,6 +10,8 @@ This guide will assume that you have administrative rights, either as root or a
 * `git`
 * `base-devel`
 * `cmake`
+* `ffmpeg`
+* `ImageMagick`
 
 #### Optional packages used in this guide
 
@@ -27,7 +29,7 @@ sudo pacman -Syu
 * Install some of the above mentioned programs:
 
 ```shell
-sudo pacman -S git base-devel elixir cmake
+sudo pacman -S git base-devel elixir cmake ffmpeg imagemagick
 ```
 
 ### Install PostgreSQL
diff --git a/docs/installation/debian_based_en.md b/docs/installation/debian_based_en.md
index 60c2f47e5..30ee64c01 100644
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@@ -13,6 +13,8 @@ This guide will assume you are on Debian Stretch. This guide should also work wi
 * `git`
 * `build-essential`
 * `cmake`
+* `ffmpeg`
+* `ImageMagick`
 
 #### Optional packages used in this guide
 
@@ -31,7 +33,7 @@ sudo apt full-upgrade
 * Install some of the above mentioned programs:
 
 ```shell
-sudo apt install git build-essential postgresql postgresql-contrib cmake
+sudo apt install git build-essential postgresql postgresql-contrib cmake ffmpeg imagemagick
 ```
 
 ### Install Elixir and Erlang
diff --git a/docs/installation/debian_based_jp.md b/docs/installation/debian_based_jp.md
index c2dd840d3..219f40525 100644
--- a/docs/installation/debian_based_jp.md
+++ b/docs/installation/debian_based_jp.md
@@ -17,6 +17,8 @@
 - `git`
 - `build-essential`
 - `cmake`
+- `ffmpeg`
+- `ImageMagick`
 
 #### このガイドで利用している追加パッケージ
 
@@ -33,7 +35,7 @@ sudo apt full-upgrade
 
 * 上記に挙げたパッケージをインストールしておきます。
 ```
-sudo apt install git build-essential postgresql postgresql-contrib cmake
+sudo apt install git build-essential postgresql postgresql-contrib cmake ffmpeg imagemagick
 ```
 
 
diff --git a/docs/installation/freebsd_en.md b/docs/installation/freebsd_en.md
index ca2575d9b..01b410a46 100644
--- a/docs/installation/freebsd_en.md
+++ b/docs/installation/freebsd_en.md
@@ -7,7 +7,7 @@ This document was written for FreeBSD 12.1, but should be work on future release
 This assumes the target system has `pkg(8)`.
 
 ```
-# pkg install elixir postgresql12-server postgresql12-client postgresql12-contrib git-lite sudo nginx gmake acme.sh cmake
+# pkg install elixir postgresql12-server postgresql12-client postgresql12-contrib git-lite sudo nginx gmake acme.sh cmake ffmpeg imagemagick
 ```
 
 Copy the rc.d scripts to the right directory:
diff --git a/docs/installation/gentoo_en.md b/docs/installation/gentoo_en.md
index 5a676380c..9a8b54ece 100644
--- a/docs/installation/gentoo_en.md
+++ b/docs/installation/gentoo_en.md
@@ -29,6 +29,8 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
 * `dev-lang/elixir`
 * `dev-vcs/git`
 * `dev-util/cmake`
+* `media-video/ffmpeg`
+* `media-gfx/imagemagick`
 
 #### Optional ebuilds used in this guide
 
@@ -47,7 +49,7 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
 * Emerge all required the required and suggested software in one go:
 
 ```shell
- # emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake
+ # emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake media-video/ffmpeg media-gfx/imagemagick
 ```
 
 If you would not like to install the optional packages, remove them from this line. 
diff --git a/docs/installation/netbsd_en.md b/docs/installation/netbsd_en.md
index 6ad0de2f6..8cf2e4682 100644
--- a/docs/installation/netbsd_en.md
+++ b/docs/installation/netbsd_en.md
@@ -10,7 +10,7 @@ Pleroma uses.
 
 The `mksh` shell is needed to run the Elixir `mix` script.
 
-`# pkgin install acmesh elixir git-base git-docs mksh nginx postgresql11-server postgresql11-client postgresql11-contrib sudo`
+`# pkgin install acmesh elixir git-base git-docs mksh nginx postgresql11-server postgresql11-client postgresql11-contrib sudo ffmpeg4 ImageMagick`
 
 You can also build these packages using pkgsrc:
 ```
diff --git a/docs/installation/openbsd_en.md b/docs/installation/openbsd_en.md
index eee452845..277e5ec43 100644
--- a/docs/installation/openbsd_en.md
+++ b/docs/installation/openbsd_en.md
@@ -10,16 +10,17 @@ The following packages need to be installed:
 
   * elixir
   * gmake
-  * ImageMagick
   * git
   * postgresql-server
   * postgresql-contrib
   * cmake
+  * ffmpeg
+  * ImageMagick
 
 To install them, run the following command (with doas or as root):
 
 ```
-pkg_add elixir gmake ImageMagick git postgresql-server postgresql-contrib cmake
+pkg_add elixir gmake git postgresql-server postgresql-contrib cmake ffmpeg ImageMagick
 ```
 
 Pleroma requires a reverse proxy, OpenBSD has relayd in base (and is used in this guide) and packages/ports are available for nginx (www/nginx) and apache (www/apache-httpd). Independently of the reverse proxy, [acme-client(1)](https://man.openbsd.org/acme-client) can be used to get a certificate from Let's Encrypt.
diff --git a/docs/installation/openbsd_fi.md b/docs/installation/openbsd_fi.md
index b5b5056a9..2cb03e73e 100644
--- a/docs/installation/openbsd_fi.md
+++ b/docs/installation/openbsd_fi.md
@@ -16,7 +16,7 @@ Matrix-kanava #freenode_#pleroma:matrix.org ovat hyviä paikkoja löytää apua
 
 Asenna tarvittava ohjelmisto:
 
-`# pkg_add git elixir gmake postgresql-server-10.3 postgresql-contrib-10.3 cmake`
+`# pkg_add git elixir gmake postgresql-server-10.3 postgresql-contrib-10.3 cmake ffmpeg ImageMagick`
 
 Luo postgresql-tietokanta:
 
diff --git a/docs/installation/otp_en.md b/docs/installation/otp_en.md
index b7e3bb2ac..8fdf6b5b5 100644
--- a/docs/installation/otp_en.md
+++ b/docs/installation/otp_en.md
@@ -27,17 +27,19 @@ Other than things bundled in the OTP release Pleroma depends on:
 * PostgreSQL (also utilizes extensions in postgresql-contrib)
 * nginx (could be swapped with another reverse proxy but this guide covers only it)
 * certbot (for Let's Encrypt certificates, could be swapped with another ACME client, but this guide covers only it)
+* ffmpeg (needed for media preview proxy)
+* ImageMagick (needed for media preview proxy)
 
 === "Alpine"
     ```
     echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
     apk update
-    apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot
+    apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot ffmpeg imagemagick
     ```
 
 === "Debian/Ubuntu"
     ```
-    apt install curl unzip libncurses5 postgresql postgresql-contrib nginx certbot
+    apt install curl unzip libncurses5 postgresql postgresql-contrib nginx certbot ffmpeg imagemagick
     ```
 
 ## Setup