anchor.diff:  
     markad = stdenv.mkDerivation rec {
       pname = "vdr-markad";
  -    version = "2.0.4";
  +    version = "3.0.25";
   
       src = fetchFromGitHub {
         repo = "vdr-plugin-markad";
  -      owner = "jbrundiers";
  -      sha256 = "sha256-Y4KsEtUq+KoUooXiw9O9RokBxNwWBkiGB31GncmHkYM=";
  -      rev = "288e3dae93421b0176f4f62b68ea4b39d98e8793";
  -    };
  -
  -    buildInputs = [ vdr libav ];
  +      owner = "kfb77";
  +      sha256 = "sha256-m7cUAxwXj62spelHYH6uTIoViSavSR0d4psr7+KLJg8=";
  +      rev = "v${version}";
  +    };
  +
  +    buildInputs = [ vdr ffmpeg ];
   
       postPatch = ''
         substituteInPlace command/Makefile --replace '/usr' ""
  
positive.code: { lib, stdenv, fetchurl, fetchgit, vdr, fetchFromGitHub
  , graphicsmagick, libav, pcre, xorgserver, ffmpeg
  , libiconv, boost, libgcrypt, perl, util-linux, groff, libva, xorg, ncurses
  , callPackage
  }: let
  
negative.code:     installFlags = buildFlags;
  
      meta = with lib; {
        homepage = "https://github.com/kfb77/vdr-plugin-markad";
        description = "MarkAd marks advertisements in VDR recordings.";
        maintainers = [ maintainers.ck3d ];
        license = licenses.gpl2;
  