#!/bin/bash
pid=$(xprop | grep -i pid | cut -d "=" -f 2 | tr -dc "0-9")
index=$(pacmd list-sink-inputs | grep -B30 "application.process.id = \"$pid\"" | grep -m1 "index:" | cut -d ":" -f 2 | tr -dc "0-9")
pacmd list-sink-inputs | grep -A30 "index: $index" | grep -q "muted: no" && pacmd set-sink-input-mute $index true || pacmd set-sink-input-mute $index false