But what do you mean by add .glsl into mpv.conf?
mpv.conf from Anime4k contains scripts that tells it to load the Anime4k .glsl files from shaders folder:
# Optimized shaders for higher-end GPU: Mode A (HQ)
glsl-shaders="~~/shaders/Anime4K_Clamp_Highlights.glsl;~~/shaders/Anime4K_Restore_CNN_VL.glsl;~~/shaders/Anime4K_Upscale_CNN_x2_VL.glsl;~~/shaders/Anime4K_AutoDownscalePre_x2.glsl;~~/shaders/Anime4K_AutoDownscalePre_x4.glsl;~~/shaders/Anime4K_Upscale_CNN_x2_M.glsl"
mpv.conf from SVP fresh installation contains some script that allows mpv to connect to SVP:
https://gyazo.com/a8457c661de44b303c747a8f6e10bb55
so when you install Anime4k by replacing the old mpv.conf you remove the script that allows it to detect SVP.
I've combined the default mpv.conf file with the one mentioned from darkwinscm's link and now it should contain both the script that detects SVP and the script that tells it to load Anime4k shaders.
All you have to do is unzip it in "C:\Program Files (x86)\SVP 4\mpv64\" and should work if you're using Windows:
https://drive.google.com/drive/folders/ … OuWgBfmLxY