diff --git a/youtube-dl.spec b/youtube-dl.spec
index 0aa4b9b..cecc585 100644
--- a/youtube-dl.spec
+++ b/youtube-dl.spec
@@ -1,6 +1,6 @@
 Name:          youtube-dl
 Version:       2015.03.28
-Release:       1mamba
+Release:       2mamba
 Summary:       A small command-line program to download videos from YouTube.com and a few more sites
 Group:         Applications/Multimedia
 Vendor:        openmamba
@@ -14,6 +14,7 @@ License:       Public Domain
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
 BuildRequires: pandoc
+Requires:      ffmpeg
 Requires:      python >= %python_version
 BuildArch:     noarch
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
@@ -41,6 +42,9 @@ rm -f youtube-dl youtube-dl.exe
 %{_mandir}/man1/youtube-dl.1*
 
 %changelog
+* Sat Apr 04 2015 Davide Madrisan <davide.madrisan@gmail.com> 2015.03.28-2mamba
+- youtube-dl requires ffmpeg at runtime
+
 * Mon Mar 30 2015 Automatic Build System <autodist@mambasoft.it> 2015.03.28-1mamba
 - automatic version update by autodist