ffmpeg - Convert videos to smaller scale. Clean up filenames. Backup original

convert.sh

for vid in */*.mp4
do

new_file_name=$(echo $vid | awk '{ gsub(/ /, "-"); gsub(/[&|\+|{|}]/, ""); gsub(/-+/, "-"); gsub(/-_-/, "-"); gsub(/(-[0-9]{3,})/, "") }; 1')

ffmpeg -i "./$vid" -filter:v "scale=w=800:h=-1" "./${new_file_name}"

backup_dir="./backup/$(dirname "$vid")"
mkdir -p $backup_dir && cp "./$vid" $backup_dir

rm "./${vid}"

done