#!/bin/bash
mkdir -p output/
ls *.mp4 | while read -r l;
do
        sec=$(ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$l")
        round_sec=${sec%.*}
        if [[ $round_sec -lt 60 ]]; then
                loop=$(expr 60 / $round_sec)
                round_loop=$(expr ${loop%.*} + 2)
                # echo $l $round_loop $round_sec
                echo "ffmpeg -stream_loop ${round_loop} -i "${l}" -c copy output/${round_loop}_${l}" >> run.sh
        fi
done
bash run.sh
rm -rf run.sh