A script to perform a random cut on a video

movie_cut_random.sh

#!/bin/bash
#A script to perform a random cut on a video
#By Antonio Roberts | www.hellocatfood.com
#Usage: ./movie_cut.sh /path/to/file.mp4
#e.g. ./movie_cut.sh /home/Desktop/videofile.mp4

# change 30 to however many videos you want output
filenumber=$(printf "%05d")
while [ $filenumber -le 30 ]
do

# calculate the length of the video
length=`expr $(ffprobe -loglevel error -show_streams $1 | grep duration | tail -1 | cut -f 2 -d = | head -1 | cut -d "." -f 1) \* 100`
 
# start position
startPos=$(echo "scale=2;$(shuf -i 1-$length -n 1) / 100" | bc | sed -e s/^/0/)

# define random duration (up to 0.999 seconds). Change 1. to bigger number for longer videos
duration=$(echo "1.$RANDOM")

#get path of file
path=$( readlink -f "$( dirname "$1" )" )

#get filename minus extension
file=$(basename "$1")
filename="${file%.*}"

#cut the video
ffmpeg -i $1 -ss $startPos -t $duration -q:v 0 -y "$path"/"$filename"_"$filenumber"_cut.avi

filenumber=`expr $filenumber + 1`
filenumber=$(printf "%05d" $filenumber)

done