Set up vdpau.

nix/configuration/roles/media/default.nix

@@ -17,6 +17,8 @@ let
         buildCommand = "${old.buildCommand}\n patchShebangs $out";
 
       });
+  kernel_version_check = lib.versionAtLeast config.boot.kernelPackages.kernel.version "6.12";
+  nixos_version_check = lib.versionAtLeast (lib.versions.majorMinor lib.version) "25.05";
 in
 {
   imports = [ ];
@@ -35,6 +37,8 @@ in
       {
         environment.systemPackages = with pkgs; [
           ffmpeg
+          libva-utils # for vainfo
+          vdpauinfo
         ];
       }
       (lib.mkIf config.me.graphical {
@@ -59,6 +63,21 @@ in
           cast_file_vaapi
         ];
       })
+      (lib.mkIf (config.me.graphics_card_type == "amd") {
+        environment.sessionVariables = {
+          VDPAU_DRIVER = "radeonsi";
+        };
+      })
+      (lib.mkIf (config.me.graphics_card_type == "intel") {
+        hardware.graphics.extraPackages = with pkgs; [
+          intel-media-driver
+          libvdpau-va-gl # Support vdpau applications using va-api
+        ];
+
+        environment.sessionVariables = {
+          VDPAU_DRIVER = "va_gl";
+        };
+      })
     ]
   );
 }