#!/bin/bash

dest="/path/to/dir"
trsh=256
IFS='|'

while read -r author title year bitrate; do
    if [[ "$((bitrate/1000))" -lt $trsh ]]; then
        echo "Bitrate is below $trsh Kbps"
        exit 1
    fi
    mv "$1" "$dest/${author}-${title}-${year}.${1##*.}"

done < <(mediainfo --Inform="General;%Performer%|%Track%|%Recorded_Date%|%BitRate%" "$1")