Extract clip from video using FFmpeg

extract-clip-from-video.sh

#!/usr/bin/env bash

# ------------------------------------------------------------------------------
#                                                                              -
#  Extract clip from video                                                     -
#                                                                              -
#  Created by Fonic <https://github.com/fonic>                                 -
#  Date: 04/21/24 - 04/21/24                                                   -
#                                                                              -
#  Source:                                                                     -
#  https://gist.github.com/fonic/77c8a82ea6b502600c5af1c735476225              -
#                                                                              -
#  Based on:                                                                   -
#  https://superuser.com/a/1752195/1108818                                     -
#                                                                              -
# ------------------------------------------------------------------------------

# Set up error handling
set -ue; trap "echo -e \"\e[1;31mError: an unhandled error occurred on line \${LINENO}, aborting.\e[0m\"; exit 1" ERR

# Process command line
if (( $# != 4 )); then
	echo
	echo -e "\e[1mUsage:\e[0m ${0##*/} INFILE START DURATION OUTFILE"
	echo
	echo -e "\e[1mNote:\e[0m"
	echo "Two formats are supported for arguments START and DURATION:"
	echo "Format 1: 'HH:MM:SS[.MS]'    ->  hours + minutes + seconds [+ optional fraction]"
	echo "                                 (e.g. '00:07:38.123', '01:02:03')"
	echo "Format 2: 'XX[.F][s|ms|us]'  ->  secs, millisecs or microsecs [+ optional fraction]"
	echo "                                 (e.g. '7.2s', '800ms', '123.6us')"
	echo
	exit 2
fi
INFILE="$1"
START="$2"
DURATION="$3"
OUTFILE="$4"

# Extract clip from video (NOTE: first line DISCARDS original metadata, second
# line KEEPS original metadata)
#ffmpeg -i "${INFILE}" -ss "${START}" -t "${DURATION}" -c copy "${OUTFILE}" || echo -e "\e[1;31mError: failed to extract clip from '${INFILE}'\e[0m"
ffmpeg -i "${INFILE}" -ss "${START}" -t "${DURATION}" -c copy -movflags use_metadata_tags -map_metadata 0 "${OUTFILE}"  || echo -e "\e[1;31mError: failed to extract clip from '${INFILE}'\e[0m"

Usage:

Usage: extract-clip-from-video.sh INFILE START DURATION OUTFILE

Note:
Two formats are supported for arguments START and DURATION:
Format 1: 'HH:MM:SS[.MS]'    ->  hours + minutes + seconds [+ optional fraction]
                                 (e.g. '00:07:38.123', '01:02:03')
Format 2: 'XX[.F][s|ms|us]'  ->  secs, millisecs or microsecs [+ optional fraction]
                                 (e.g. '7.2s', '800ms', '123.6us')