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• Evolution #3674 : Chaine de traitement dans la table des traitements

  27 février 2016, par Fil _

  La bonne syntaxe en l’état actuel des choses serait :

  ```
  ’LOGO_EVENT’ =>
  array (size=1)
  0 => string ’massicoter_logo(logo_par_defaut(%s), $connect, event, $Pile<sup>1</sup>[’id_event’])’ (length=xx)

  ```

  c’est un `array` mais seulement parce que la valeur pour 0 est le filtre générique, et qu’on peut spécialiser avec d’autres clés comme par exemple ’TEXTE’. Pour le moment on n’"empile" pas les filtres (j’avoue que je n’y avais jamais pensé, c’est peut-être une bonne idée d’évolution).

  En attendant ton plugin peut faire quelque chose comme :
  `filtre = str_replace(’%s’, $filtre, ’’massicoter_logo(%s, $connect, event, $Pile<sup>1</sup>[’id_event’]" )`

• Dynamically record parts of a video stream using ffmpeg based on incoming events

  12 septembre 2023, par ganjim

  Say I have a RTSP stream running on some server.

  &#xA;

  I want to record parts of this video stream based on some events that will come up on my machine.&#xA;My goal is to record 10 seconds before up to 10 seconds after the PTS in any received event. Consider that I have a way to synchronize the PTS between the sender and the receiver, but by the time I receive the events, its already streamed and is in the past.&#xA;So I either need to have the ffmpeg command running already, or to have buffered streaming video in my memory.

  &#xA;

  I just added some code with comments as a way to simulate the situation, it is not complete as I still don't have a working solution. But I'm looking to understand if ffmpeg has capabilities for dealing with rtsp streams suitable for this situation.

  &#xA;

  const { spawn } = require('child_process');

function processEvent(event){
  
  let startTime = event.pts - 10
  let endTime = event.pts + 10

  const ffmpegArgs = [
    '-i', "rtspUrl",
    '-ss', startTime.toString(),
    '-to', endTime.toString(),
    '-c', 'copy',
    '-f', 'mp4',
    `output_${startTime}_${endTime}.mp4` // Output filename
  ];
  // Here it is obviously not possible to give ffmpeg a negative startTime.
  // We either have to have spawned the ffmpeg command and somehow give it a starting time for recording on demand or have a buffering system in place.
  // Having a buffer to store every raw frame and then attach them after endTime is also considerably CPU and memory intensive.
  // Looking for alternative ways to achieve the same output.

  const ffmpegProcess = spawn('ffmpeg', ffmpegArgs, {
    stdio: 'inherit'
  });
}

// Code to simulate the events:
// imagine these pts to be relative to Date.now(), so using negative PTS to show the events are going to be in the past by the time we receive them.
setTimeout(() => {
  const event1= { pts: -30 };
  processEvent(event1);
}, 1000);

setTimeout(() => {
  const event2 = { pts: -20 };
  processEvent(event2);
}, 5000);


  &#xA;

• Erreur dans squelette collection

  
  2 décembre 2013

  Slt,

  Erreur dans squelette collection à http://cyc.mediaspip.net/collection/saint-malo-event-youth-workers?id_media=417#media_417
  « Aucun squelette breadcrumb/collection n’est disponible... »

  N’apparait que quand connecté

  ++
  Pierre-Yves