Comment by dither8

In my input.conf file I've created filter keyboard shortcuts:

  F1 af toggle "acompressor=ratio=4,loudnorm"
  F2 vf toggle "bwdif"

First one is an alright dynamic range compressor (makes the loud parts quieter and quieter parts loud). Second is a deinterlace at default settings. These are standard ffmpeg filters and mpv let's you turn these on in real time.