Split long videos into 2 minute segments

videosplit.sh

#!/bin/bash
FILES=/home/tim/Videos/marathon-vids/*.mp4
for f in $FILES
do
    time="$(avprobe "$f" 2>&1 >/dev/null | grep -Po '(?<=Duration:\s)\d{2}:\d{2}:\d{2}')"
    hrs="$(echo "$time" | grep -Po '\d{2}(?=:\d{2}:\d{2})')"
    mins="$(echo "$time" | grep -Po '(?<=\d{2}:)\d{2}(?=:\d{2})')"
    secs="$(echo "$time" | grep -Po '(?<=\d{2}:\d{2}:)\d{2}')"
    filename="$(echo "$f" | grep -Po '(?<=/home/tim/Videos/marathon-vids/).*(?=\.mp4)')"
    let time=$hrs*3600+$mins*60+$secs
    echo $time
    if [[ $time -gt 150 ]]
    then
        split=120
        
        while [ $split -lt $time ]
        do
            let diff=time-split
            
            if [[ $diff -gt 120 ]]
            then
                diff=120
            fi

            let number=split/120
            
            ffmpeg -i "$f" -ss "$split" -t "$diff" -acodec copy -vcodec copy -async 1 -y  ./output/"$filename"_"$number".mp4

            let split=split+120
        done
    fi
done