[Warner306]

This is a bit beyond me, instructions assume knowledge I dont have. 

I first put the shader I want to use called HDRFIX in

T:\KODI DS4\system\players\dsplayer\Shaders

Next I added to shaders.xml

  </shader>
<shader name="HDRFIX" id="22">
    <path>HDRFIX.hlsl</path>
    <profile>ps_2_0</profile>
</shaders>


Now I edited the MKV line in mediaconfig.xml like so, this was just to apply the shader to all MKV files first to see if it worked, it did nothing, where have I gone wrong, i'm trying at least


<rule filetypes="mkv">
  <shaders>
        <shader id="22" />
      </shaders>
      <source filter="avsource" />
      <splitter filter="avsource" />
      <video filter="mpcvideodec" />
      <!-- You can do like that to specifie a DXVA only filters.
      If you want to use the same filter for DXVA and non DXVA media, just add
      a single <video> line.
      <video>
        <video dxva="true" filter="mpcvideodec" />
        <video filter="mpcvideodec" />
      </video> -->
      <audio filter="ffdaudiodec" />
      <!--<extra>
        <extra filter="ac3filter" />
        <extra filter="dcgraphiceq" />
      </extra>-->

I'm not sure if your shader will work or not. Start with the starter files in the DSPlayer guide, set DSPlayer to use those external filters and then use the GUI for media rules in the DSPlayer settings to add the shader to the existing rule for mkv files.

It doesn't look like you are using the starter kit for external filter use.