# A small bash script to spit videos in smaller parts. # Author: Argus Khan # Dependencies: ffmpeg,mideainfo

Video_Clipper.sh

# A small bash script to spit videos in smaller parts.
# Author: Argus Khan
# Dependencies: ffmpeg,mideainfo 


#!/usr/bin/env bash

function usage {
	echo "Please use the following formatting:"
	echo "Usage: $(basename $0) [-o OUTPUT_NAME] [-t CLIP_LENGTH] <INPUT_VIDEO_FILE>" 2>&1
	echo "[Options]:"
	echo '   -t     CLIP_LENGTH     The length of each clip in seconds.'
  echo '   -o     OUTPUT_NAME     Custom Name for the clips.'
  exit 1
}


function secToStamp { 
	Hr=0;Mn=0;Sc=0
	Hr=$(expr $1 / 3600)
	if [[ $(expr $1 % 3600) != 0 ]]; then
		Mn=$(expr $(expr $1 % 3600) / 60)
		if [[ $(expr $(expr $1 % 3600) % 60) != 0 ]]; then
			Sc=$(expr $(expr $1 % 3600) % 60)
		fi
	fi
	timeStamp="$Hr:$Mn:$Sc"
}


if [[ $# == 0 ]]; then
	echo "[Syntax Error] No arguments found!"
	echo
	usage
fi


for f in $@; do :; done
vidFile=$f
interval=30
outputName=$vidFile


if ! [[ "$vidFile" =~ [a-z]\.(mp4|mkv|mov|webm|avi|ts|wmv|ogg|ogv|3gp|gifv) ]]
then
  echo "[Error] Invalid file format!"
	echo "Please only use the following video formats:"
	echo "[mp4|mkv|mov|webm|avi|ts|wmv|ogg|ogv|3gp|gifv]"
	echo 
	usage
fi


optstring="t:o:"

while getopts ${optstring} arg; do
	case ${arg} in
	t) 
		interval="${OPTARG}" ;;
	o) 
		outputName="${OPTARG}" ;;
	?)
		echo "Invalid option: -${OPTARG}."
		echo
		usage
		;;
	esac
done

dur=$(mediainfo --Output='General;%Duration%' $vidFile)
dur=$(( $dur / 1000))
looop=$(($dur / $interval))
if [[ $(expr $dur % $interval) != 0 ]]; then
	looop=$(($looop + 1))
fi

# echo "Total video duration(secs): " $dur
# echo "Total number of clips: " $looop
# echo "Input file:" $vidFile
# echo "Clip Length:" $interval
# echo "Output file:" $outputName

timePassed=0
timeStamp=""
for (( i = 1; i <= $looop ; i++ )); do
	secToStamp $timePassed
	# echo $timeStamp
	ffmpeg -nostats -loglevel 0 -ss $timeStamp -i $vidFile -t $interval -c:v copy -c:a copy "$i"_$outputName
	timePassed=$(($timePassed + $interval))
	# echo "Time past: " $timePassed
done

echo "Done clipping!!"