GUACAMOLE-465: Document new guacenc dependency on libavformat.
diff --git a/src/chapters/installing.xml b/src/chapters/installing.xml
index 9518f48..ba94a32 100644
--- a/src/chapters/installing.xml
+++ b/src/chapters/installing.xml
@@ -288,8 +288,9 @@
<para>The <command>guacenc</command> utility, provided by
<package>guacamole-server</package> to translate screen recordings into video,
depends on FFmpeg, and will only be built if at least the
- <package>libavcodec</package>, <package>libavutil</package>, and
- <package>libswscale</package> libraries provided by FFmpeg are installed.</para>
+ <package>libavcodec</package>, <package>libavformat</package>,
+ <package>libavutil</package>, and <package>libswscale</package> libraries
+ provided by FFmpeg are installed.</para>
<important>
<para>If you lack these dependencies, <emphasis>then the features or protocols which
depend on them will not be enabled</emphasis>. Please read this section
@@ -310,12 +311,13 @@
<entry><link xl:href="https://ffmpeg.org/">FFmpeg</link></entry>
<entry>
<para>The <package>libavcodec</package>,
- <package>libavutil</package>, and
- <package>libswscale</package> libraries provided by FFmpeg
- are used by <command>guacenc</command> to encode video streams
- when translating recordings of Guacamole sessions. Without
- FFmpeg, the <command>guacenc</command> utility will simply not
- be built.</para>
+ <package>libavformat</package>,
+ <package>libavutil</package>, and <package>libswscale</package>
+ libraries provided by FFmpeg are used by
+ <command>guacenc</command> to encode video streams when
+ translating recordings of Guacamole sessions. Without FFmpeg,
+ the <command>guacenc</command> utility will simply not be
+ built.</para>
<para>If you do not wish to make graphical recordings of Guacamole
sessions, or do not wish to translate such recordings into
video, then FFmpeg is not needed.</para>
@@ -328,6 +330,7 @@
<entry>Debian / Ubuntu package</entry>
<entry>
<para><package>libavcodec-dev</package>,
+ <package>libavformat-dev</package>,
<package>libavutil-dev</package>,
<package>libswscale-dev</package></para>
</entry>
@@ -676,6 +679,7 @@
freerdp2 ............ yes
pango ............... yes
libavcodec .......... yes
+ libavformat ......... yes
libavutil ........... yes
libssh2 ............. yes
libssl .............. yes
