I have a high end Plasma TV BUT old. Because of the nuisance of ADS I keep adjusting my TV volume Down Then Up …You get the picture.
I need to automate volume correction to a specific volume I am comfortable with ( which can be adjusted)
Sorry, I think, volumio can’t resolve your problem. Try search for “volume normalization”, maybe some one create device for this. But I didn’t see any such device. Maybe, try connect tv into your pc’s sound card. In PC make volume normalization, and send sound from PC to amplifier.