#!/bin/bash

crf=${CRF:-25}
video_codec=${VIDEO_CODEC:-libsvtav1}
audio_codec=${AUDIO_CODEC:-libopus}

while getopts ":c:v:a:" opt; do
	case $opt in
		c)
			crf=$OPTARG
		;;
		v)
			video_codec=$OPTARG
		;;
		a)
			audio_codec=$OPTARG
		;;
		\?)
			echo "no such arg!"
			exit 1
		;;
	esac
done
shift $((OPTIND-1))

if [ $# -eq 0 ]; then
	echo "no file selected"
	exit 1
fi

if ! [ -f $1 ]; then
	echo "no such file"
	exit 2
fi

ffmpeg \
	-i $1 \
	-crf $crf \
	-c:v $video_codec \
	-c:a $audio_codec \
	${2:-out.$1}