once you Bash it, you can't unBash it

final_cunt.sh

#!/bin/bash
 
## final_cunt.sh is simple, algorithmic CLI video-editor
## requires mencoder and GNU user-land
## usage: final_cunt.sh [infile]
 
####### settings ########
## length of a piece in seconds
P_LEN='3'
 
## gap between the pieces in seconds
P_GAP='60'

## output filename
OUTPUT='output_final_cunted.avi'

#########################

FILE=$1
[ -f "$FILE" ] || (echo -e '\n\ninput file does not exist!\n\n'; exit 1)

LEN=$(mplayer -vo null -ao null -frames 0 -identify "$FILE" 2>/dev/null | grep "^ID_LENGTH" | sed -e 's/ID_LENGTH=//g')
SEC=${LEN/\.*}
 
## make TMP dir
TMP=tmp_$(date +%s)
[ -a $TMP ] || mkdir ./$TMP
 
## calculate the number of samples
PIECES=$(($SEC / ($P_LEN+$P_GAP)))
 
echo 'file info:'
echo 'length:' $SEC
echo 'pieces:' $PIECES
 
## chopping function
function chop() {
 
POS=$1
SKIP=$(($POS*($P_LEN+$P_GAP)))
 
echo 'piece #' $POS
echo 'skip to' $SKIP
mencoder -ovc copy -oac copy -ss $SKIP -endpos $P_LEN -o $TMP/$POS.avi "$FILE" &> /dev/null
}
 
## chopping loop
for i in $(seq $PIECES); do chop $i; done
 
## put all chunks together
echo -e 'stitching the chops..'
CHUNKS=$(ls $TMP | sort -n | awk -v T=$TMP '{ print T"/"$1}')
mencoder -forceidx -ovc copy -oac copy -o ./$OUTPUT $CHUNKS &>/dev/null && \
echo -e '\n\n\nDone!\nEnjoy your file:' $(pwd)/$OUTPUT || \
echo -e '\n\nerror!\n\n'
rm -Rf $TMP
 
## uncomment to play file once it's ready
mplayer $(pwd)/$OUTPUT
 
exit 0