ffmpeg -loglevel 40 -thread_queue_size 32768 -vsync 0 -async 100 -deint 2 -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" -filter_complex "[0:a]afifo,showvolume=w=240:h=20:o=1:f=0.50:r=25[vol0];nullsrc=size=320x240[base1];[0:v]fifo,setpts=PTS-STARTPTS,scale=320x240[w0h0];[w0h0][vol0]overlay=eval=0:x=280[w0h0a];[base1][w0h0a]overlay=shortest=1:eval=0" -vcodec h264 -vsync 0 -async 1 -threads 0 -profile:v main -level 4 -preset medium -tune grain  -b:v 5000k -bufsize 2000k -minrate 4000k -maxrate 6000k -an -flush_packets 0 -metadata service_provider=Nextologies -metadata service_name=nScreen01 -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=500000"