diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index be3a38a94ebd..e732c11ba7dc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -27865,7 +27865,9 @@ with pkgs;
 
   oberon-risc-emu = callPackage ../applications/emulators/oberon-risc-emu { };
 
-  obs-studio = libsForQt5.callPackage ../applications/video/obs-studio {};
+  obs-studio = libsForQt5.callPackage ../applications/video/obs-studio {
+    ffmpeg_4 = ffmpeg-full;
+  };
   obs-studio-plugins = recurseIntoAttrs (callPackage ../applications/video/obs-studio/plugins {});
   wrapOBS = callPackage ../applications/video/obs-studio/wrapper.nix {};