mpv: Add motion vector interpolation script

users/simon/modules/default.nix

@@ -9,7 +9,7 @@
     ./htop.nix
     ./misc.nix
     ./mpd.nix
-    ./mpv.nix
+    ./mpv
     ./neovim.nix
     ./pass.nix
     ./programs.nix

users/simon/modules/mpv/default.nix

@@ -48,6 +48,20 @@ in
     # mpv can also be useful without a display (e.g. for encoding)
     enable = nixosConfig.sbruder.gui.enable || nixosConfig.sbruder.full;
 
+    package = pkgs.wrapMpv
+      (pkgs.mpv-unwrapped.override {
+        vapoursynthSupport = true;
+        vapoursynth = pkgs.vapoursynth.withPlugins (with pkgs; [
+          vapoursynth-mvtools
+        ]);
+      })
+      {
+        scripts = with pkgs.mpvScripts; [
+          pitchcontrol
+          sponsorblock
+        ];
+      };
+
     defaultProfiles = [
       "gpu-hq" # High quality by default
     ];
@@ -208,14 +222,11 @@ in
           tscale-clamp = 0.0;
         };
 
+        mvinterpolate.vf-add = "vapoursynth=${./mvinterpolate.py}";
+
         # adapted from https://github.com/mpv-player/mpv/issues/4418#issuecomment-368272929
         clear-speed.af-add = "scaletempo=stride=18:overlap=.6:search=10";
       };
-
-    scripts = with pkgs.mpvScripts; [
-      pitchcontrol
-      sponsorblock
-    ];
   };
 
   # mpv-gallery-view is not compatible with home-manager’s script injection meachanism

users/simon/modules/mpv/mvinterpolate.py

@@ -0,0 +1,20 @@
+import vapoursynth as vs
+
+core = vs.core
+
+clip = core.std.AssumeFPS(video_in, fpsnum=int(container_fps * 1000), fpsden=1000)
+
+sup = core.mv.Super(clip, pel=2)
+bvec = core.mv.Analyse(sup, isb=True)
+fvec = core.mv.Analyse(sup, isb=False)
+hfr = core.mv.BlockFPS(
+    clip,
+    sup,
+    bvec,
+    fvec,
+    num=int(display_fps * 1000),
+    den=1000,
+    thscd1=140,
+    thscd2=38,
+)
+hfr.set_output()