#!/bin/bash

source $(dirname $_)/vars

${FFMPEG} \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=1&stream=0.sdp" -c:v rawvideo -c:a copy -ac 1 -f nut -) \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=2&stream=0.sdp" -c:v rawvideo -f nut -) \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=3&stream=0.sdp" -c:v rawvideo -f nut -) \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=4&stream=0.sdp" -c:v rawvideo -f nut -) \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=5&stream=0.sdp" -c:v rawvideo -f nut -) \
	-i <(ffmpeg -i "rtsp://${HOST}:554/user=${USER}&password=${PASS}&channel=6&stream=0.sdp" -c:v rawvideo -f nut -) \
	-map 0:a:0 \
	-filter_complex "
		color=black:s=960x480 [base]; \
		[0:v] setpts=PTS-STARTPTS, scale=320x240 [cam1]; \
		[1:v] setpts=PTS-STARTPTS, scale=320x240 [cam2]; \
		[2:v] setpts=PTS-STARTPTS, scale=320x240 [cam3]; \
		[3:v] setpts=PTS-STARTPTS, scale=320x240 [cam4]; \
		[4:v] setpts=PTS-STARTPTS, scale=320x240 [cam5]; \
		[5:v] setpts=PTS-STARTPTS, scale=320x240 [cam6]; \
		[base][cam1] overlay=shortest=1:x=0:y=0 [tmp1]; \
		[tmp1][cam2] overlay=shortest=1:x=320:y=0 [tmp2]; \
		[tmp2][cam3] overlay=shortest=1:x=640:y=0 [tmp3]; \
		[tmp3][cam4] overlay=shortest=1:x=0:y=240 [tmp4]; \
		[tmp4][cam5] overlay=shortest=1:x=320:y=240 [tmp5]; \
		[tmp5][cam6] overlay=shortest=1:x=640:y=240 \
	" \
	-c:v rawvideo -c:a copy -ac 1 -f nut - | ${MPV} -

reset