#!/bin/bash
#$Id: convid,v 1.2 2026/01/31 07:00:12 RogerSeguin Exp $
########################################################################
# Copyright (c) 2026 Roger Seguin <rgrsgn@gmail.com>
#				https://frogzie.duckdns.org

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:

# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
########################################################################

# Convert videos format

declare vformat=mp4	# Convert to mp4
declare destDir=""	# Destination directory
declare -a voptions=()	# Video format specific options

function usage() {
	prg=$(basename $0)
cat << :end:
$prg - Convert videos format
Usage: $prg {-d|--destdir} [-f|--1080p|--fhd] files...
	-d destdir	destination directory
	-f		output to Full High Definition (FHD 1080p)
:end:
	exit 1
}

# Scan command line
declare -r coptions=$(getopt -o 'd:fh' --long 'destdir:,fhd,help,1080p' -n 'parse-options' -- "$@")
[ $? -eq 0 ] || {
	echo "Failed parsing options." >&2
	exit 2
}
eval set -- "$coptions"
while true; do
	case "$1" in
		-h | --help)
			usage
		;;
		-d | --destdir)
			destDir="$2"
			[ -d $destDir ] || {
				echo "Error: $destDir does not exist." 1>&2
				exit 2
			}
			shift 2
			continue
		;;
		-f | --1080p | --fhd)
			voptions=('-vf' 'scale=1920:-2')
			shift
			continue
		;;
		-- )
			shift
			break
			;;
		*)	
			echo 'Internal error!' >&2
			exit 4
		;;
	esac
done
([ -z "$destDir" ] || [ $# -eq 0 ]) && usage

# Process video files
for f in "$@"; do
	s="${f##*.}"	# File suffix
	f2=$(basename "$f" .$s 2>/dev/null ).$vformat || {
		echo "Error: \"$f\" skipped" 1>&2
		continue
	}
	echo "$f2"
	ffmpeg -i "$f" ${voptions[@]} "$destDir/$f2"
	sleep 10
done

exit 0