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• ffplay - route incoming audio stream to specific channels / convert channel layout

  7 septembre 2022, par miasma

  i need to play a mp3 stream (stereo) via ffplay and send it to specific output channels on my multichannel audio hardware.

  


  stream (stereo) -> output 3 & 4
while doing that the unused channels should stay silent, as i want to send to them from other instances of ffplay.

  


  how would i go about to do that ?

  


  i already tried a lot of different approaches without luck, mostly based on this :

  


  ffplay -i http://blablabla -af 'channelmap=map=0-2|1-3' -nodisp


  


  as well as

  


  ffplay -i http://blablabla -af 'channelmap=map=0-2|1-3=channel_layout=6.0'


  


  thank you for any help, i'm slowly going crazy digging through the manuals and trying out variations of the same command for hours …
😵‍💫

  


  ps : i'm running ffplay 5.1.1 on mac os 12.5.1 on m1max

  


• Get Pid Ffmpeg On Centos With Bash Script

  2 mai 2020, par Abdullah Al-Habsyi

  I was created SH script n run with cron for 3 hours. but i want update live cctv real time if not online, i want grep pid for each sh i have. if pid exist nothing to do, if pid not exist run command this.

  



  #!/bin/bash
#IP 192.168.19.6

ping -c 1 -q 192.168.19.6 >&/dev/null

if [ $? -eq 0 ]; then
    rm -rf /var/www/cctv/public_html/video/ri-2/*.ts;
    rm -rf /var/www/cctv/public_html/video/ri-2/*.m3u8
    ffmpeg -stimeout 87000000 -err_detect aggressive -fflags discardcorrupt \
    -rtsp_transport tcp -i "rtsp://admin:12345@192.168.19.6/media/video1" \
    -vf scale=320:-1 -c:v libx264 -pix_fmt yuv420p -preset:v ultrafast \
    -hls_time 10 -hls_list_size 10 -hls_delete_threshold 10 -hls_flags delete_segments -f hls \
    "/var/www/cctv/public_html/video/ri-2/simpang.m3u8" \
    -progress -stats

else
    rm -rf /var/www/cctv/public_html/video/ri-2/*.ts;
    rm -rf /var/www/cctv/public_html/video/ri-2/*.m3u8
fi 


  


• How to restart RTMP dump bash script if it closes / dies ?

  9 février 2016, par Shashwat Singh

  I’m using this script to dump a live stream, say "stream1.sh" etc

  #! /bin/bash
  
  function INT_cleanup()
  
  {
  
      kill `jobs -p`
  
      exit
  
  }
  
  
  
  trap INT_cleanup INT
  
  
  
  count=0
  
  while [[ $count < 10 ]] # Try 10 times
  
  do
  
      rtmpdump -r "rtmp://<ipaddress>" -a "live" -f "WIN 11,9,900,117" -W "http://xyz.swf" -p "" -y "xyz" --live | ffmpeg -re -i  - -sn  -vcodec copy -acodec copy -f flv "<ipaddress>" 
  
      count=$((count + 1))
  
  done }
  
  </ipaddress></ipaddress>

  It runs perfectly fine for 3-4 hours then it quits automatically due to packet loss or something, however if I restart it, it again starts working.
  So, What should I do to restart this particular script IF it dies ? Will it require cronjob ? If yes, then please explain how ?