#!/bin/sh

set -x

if [ ! -c /dev/video16 ]; then
	sudo modprobe v4l2loopback \
		video_nr=43,16 \
		card_label="whatever 4:3","whatever 16:9" \
		exclusive_caps=1
fi

ffmpeg \
	-i ~/elan-logo.png \
	-f v4l2 -video_size 1280x720 -input_format yuyv422 -framerate 30 -i /dev/video0 \
	-filter_complex:v '
		[0:v]scale=-2:80 [img1];
		[0:v]scale=-2:120 [img2];
		[1:v]scale=-2:480, crop=640:480:105:0 [cam43];
		[cam43][img1] overlay=25:25 [out43];
		[1:v][img2] overlay=35:35 [out169]
		'\
	-map '[out43]' -f v4l2 -vcodec rawvideo -pix_fmt yuv420p /dev/video43 \
	-map '[out169]' -f v4l2 -vcodec rawvideo -pix_fmt yuv420p /dev/video16