ffmpeg -loglevel 40
	-thread_queue_size 32768 -vsync 0 -async 100
		-i "udp://235.1.1.1:257?fifo_size=100000000000&overrun_nonfatal=1&buffer_size=100000&analyzeduration=1000000"
	-thread_queue_size 32768 -vsync 0 -async 100
		-i "udp://235.1.1.2:258?fifo_size=100000000000&overrun_nonfatal=1&buffer_size=100000&analyzeduration=1000000"

	-filter_complex
		"[0:v]setpts=PTS-STARTPTS,scale=480x270[w0h0];[0:a]afifo,showvolume=w=270:h=20:o=1:f=0.50:r=25[vol0];[w0h0][vol0]overlay=eval=0:x=440[w0h0a];
		[1:v]setpts=PTS-STARTPTS,scale=480x270[w1h0];[1:a]afifo,showvolume=w=270:h=20:o=1:f=0.50:r=25[vol1];[w1h0][vol1]overlay=eval=0:x=440[w1h0a];

		[w0h0a][w1h0a]hstack[out]" -map "[out]"

		-vcodec h264 -vsync 0 -async 1 -threads 0 -profile:v main -level 4 -preset medium -tune grain -b:v 10000k -bufsize 4000k -minrate 8000k -maxrate 12000k -an -flush_packets 0 -keyint_min 25 -g 25 -metadata service_provider=Nextologies -metadata service_name=MultiScreenTest -f mpegts -mpegts_flags +resend_headers+pat_pmt_at_frames -pcr_period 10 -y "udp://239.1.3.187:1234?pkt_size=1316&reuse=1&buffer_size=1000000&fifo_size=100000000&burst_bits=2500000"