[Request] Apply GLSL shaders to output

[morning-paradigm]

mpv version and platform

Garuda Linux (linux-zen-6.1.1.zen1-1)

mpv 0.35.0 Copyright © 2000-2022 mpv/MPlayer/mplayer2 projects
built on UNKNOWN
FFmpeg library versions:
libavutil       57.28.100
libavcodec      59.37.100
libavformat     59.27.100
libswscale      6.7.100
libavfilter     8.44.100
libswresample   4.7.100
FFmpeg version: n5.1.2

Description

The scrips has the option to Apply current video filters, but it doesn't apply GLSL shaders like Anime4K.
I'm not sure how hard it is to implement, but looks like ffmpeg is able to output video with shaders applied.