feat(destkop): add script for video optimisation.

modules/cross-platform/home-manager/scripts/bin/optimise-vid

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+
+File="$1"
+FileOptimized="${File%.*}-optimized.mp4"
+
+ffmpeg -y -hwaccel cuda -hwaccel_output_format cuda -c:v h264_cuvid -i "$File" -c:v h264_nvenc -preset:v p7 -tune:v hq -rc:v vbr -cq:v 29 -b:v 0 -profile:v high "$FileOptimized"

modules/cross-platform/home-manager/scripts/default.nix

@@ -23,5 +23,9 @@ with pkgs;
       # Add dependencies to the runtime for my iso2chd script
       wrapProgram $out/bin/iso2chd \
         --prefix PATH : ${lib.makeBinPath [mame-tools]}
+
+      # Add dependencies for optimise-vid script
+      wrapProgram $out/bin/optimise-vid \
+        --prefix PATH : ${lib.makeBinPath [ffmpeg cudatoolkit]}
     '';
   }