helper-scripts/audiotrim.sh
2018-10-22 10:48:15 -07:00

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#!/bin/env bash
# Trim an audio file given a startpoint and an endpoint
printHelp() {
cat << EOF
Usage: audiotrim [input file] [start time] [stop time] [output file]
Options:
-h show this help page
EOF
}
while true; do
case "${1}" in
'-h'|'--help')
printHelp
exit
;;
-*)
printf '%s\n' "Unknown option: ${1}"
exit 1
;;
--)
shift
break
;;
*)
break
;;
esac
done
readonly infile="${1}"
readonly starttime="${2}"
readonly stoptime="${3}"
readonly outfile="${4}"
readonly format="${1%.*}"
[[ -z "${infile}" ]] && printf '%s\n' "No file entered." >&2 exit 2
[[ ! -f "${infile}" ]] && printf '%s\n' "Not a file: ${infile}" >&2 exit 3
ffmpeg -i "${infile}" -ss "${starttime}" -to "${stoptime}" -c copy "${outfile:-"${outfile%.*}-trimmed.${format}"}"