ffscrec.sh

#!/bin/sh

FILENAME="ffscrec_`date +%F_%T`.mp4"
QUALITY="-qp 30"
FPS=60

get_dimensions() {
	DIM=`slop`
	W=`echo $DIM | cut -d x -f 1`
	H=$(echo $(((`echo $DIM | cut -d x -f 2 | cut -d + -f 1`/2)*2)))
	X=`echo $DIM | cut -d + -f 2`
	Y=`echo $DIM | cut -d + -f 3`
}

help() {
	echo "usage: $0 {options}"
	echo "  without options starts recording without audio"
	echo "options:"
	echo "  -h,   --help            show help"
	echo "  -a,   --audio           record with audio"
	echo "  -d=,  --dir=            set output directory"
	echo "  -hw,  --hwacc           hardware acceleration(no audio)"
	exit 1
}

for i in "$@"; do
	case $i in
		-h|--help)
			help
			;;
		-a|--audio)
			AUDIO="-f pulse -ac 2 -i default -c:a aac"
			;;
		-d=*|--dir=*)
			DIR="${i#*=}/"
			;;
		-hw|--hwacc)
			HW1="-vaapi_device /dev/dri/renderD128"
			HW2="-vf format=nv12,hwupload -c:v h264_vaapi"
			;;
		*)
			help
			;;
	esac
done

get_dimensions
ffmpeg $HW1 -video_size ${W}x${H} -framerate $FPS -f x11grab -i :0.0+${X},${Y} $AUDIO $HW2 $QUALITY ${DIR}${FILENAME}

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