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• How to use FFMPEG to determine actual FPS of an RTMP stream

  18 mai 2016, par Dexter1759

  I’m trying to determine the best way to analyse any RTMP stream. I’m currently settled upon the FFMPEG suite of tools, however, I find myself in need of help before I drive myself crazy.

  I’m trying to validate a stream, I’ve been asked to determine the following :

  • Can I connect to the stream ? - this can be done easily with FFProbe
  • Is there video ? (i.e. it’s not all black) - I’ve managed to build a POC so don’t think this will be a problem.
  • Is there audio ? (i.e. not all silent) - Again, don’t think this is a problem based on my POC.
  • Actual FPS - here’s where I get stuck because the meta data shows 25fps and that’s what FFTools return.

  However, using FFPlay I can see the odd message of "no frame !" and would prefer to calculate the actual FPS for comparison.

  Any help/advice with this toolset would be useful.

  (Note : I’ve also had other issues/questions with this toolset but have started with this one rather than dump a list here)

  Many thanks.

  EDIT - Forgot to mention the stream is of a live feed so things like "duration" and "nb_frames" return "N/A"

• Raspberry / Nginx RTMP video streaming player

  28 mai 2016, par Emmanuel Brunet

  I’ve set up a Nginx RTMP server that receives a flv stream from a raspberry cam using raspivid and avconv (ffmpeg)

  on the pi side I run

  /opt/vc/bin/raspivid -n -fl -mm matrix -w 800 -h 600 -fps 25 -g 80 -t 0 -b 6000000 -o - | avconv -re -i - -nostats -c copy -f flv rtmp://mercure/cam/live

  note : the target host is called mercure

  the Nginx rtmp module on mercure is set like bellow

  rtmp {
  
      server {
  
          listen 1935;
  
          # chunk_size 8192; # This might positively affect CPU load
  
          chunk_size 4096;
  
  
  
          application cam {
  
  
  
                  # max_connections 100;
  
                  live on;
  
                  # meta copy;
  
                  allow play all;
  
  
  
                  record all;
  
                  record_path /var/CCTV;
  
                  record_interval 1800s;
  
                  record_suffix -%Y-%m-%d-%T.flv;
  
  
  
                  hls on;
  
                  # hls_nested on;
  
                  hls_path /tmp/HLS;
  
          }
  
  }

  in the http section I’ve defined a hls location

      location /hls {
  
  
  
              root /tmp/HLS;
  
              types {
  
                      video/MP2T ts;
  
                      application/vnd.apple.mpegurl m3u8;
  
              }
  
      }

  when I run

  ffplay rtmp://mercure/cam/live

  it works like a charm but I can’t get it working with Vlc using the same url.

  Any idea ?

  otherwise I’m also trying to install a javascript rtmp / hls video player does anybody succeed or experienced using an open source component like flowplayer ? I’ve read a lot of doc about that but each time installs fail or some components are missing.

  please help me getting this stream available thru a web broser. thanks in advance

• Revision 106740 : Cf r106739 : ouvelle possibilité du plugin de mutualisation facile (voir ...

  11 octobre 2017, par real3t@… — Log

  Cf r106739 : ouvelle possibilité du plugin de mutualisation facile (voir commit suivant) : afficher la valeur d’une meta. Soit :
   nommeta
   nomcasier/nommeta (beaucoup utilisé avec les CFG)
  Déclaration dans le mes_options.php
  Exemple :
  GLOBALSmutualisation_afficher_config ? = (isset($GLOBALSmutualisation_afficher_config ?) ?$GLOBALSmutualisation_afficher_config ?.’,’ :).’soyezcreateurs/mode_affichage,slogan_site’ ;