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• Saving stream video on event FFMPEG CCTV RTSP ://

  25 avril 2017, par Josh

  I have a problem that I’m hoping some of the great minds here could help me with.

  I have a CCTV system that provides 4 RTSP streams (one from each camera) that will be covering a short 60 second event (roughly, so I can’t predefine a duration). The issue I have is I need FFMPEG to take clips from the stream triggered from a JSON feed. There are two commands or states, Door Open - Stop Recording and Door Closed - Begin Recording.

  Now getting FFMPEG to start recording on the door close is pretty simple in batch as I’m currently experimenting HOWEVER I can’t seem to find a way to get FFMPEG to start recording and then stop recording on demand. In batch it’s pretty straight forward using Ctrl+C to have FFMPEG commit the recording to file. The question is, how do I get FFMPEG PHP to send a command to an already closed handle to stop the recording and commit to file ?

  Many Thanks,
  Josh

• aacsbr : Turnoff in the event of over read.

  20 mars 2017, par Alex Converse

  aacsbr : Turnoff in the event of over read.
  Aliased compressed AAC bytes are almost certainly not meaningful SBR
  
  data. In the wild this causes harsh artifacts switching HE-AAC streams
  
  that don’t have SBR headers aligned with segment boundaries.
  Turning off SBR falls back to a default set of upsampling parameters
  
  that can function as a sort of error concealment. This is consistent
  
  with how the decoder handles other sorts of errors.
  

  • [DH] libavcodec/aacsbr_template.c

• How to add creation complete event after converting wav format to mp3 format using ffmpeg in Actionscript 3 ?

  31 mai 2016, par Ashish

  I am using the following codes to convert wav file format to mp3 file format using ffmpeg :

  private var info:NativeProcessStartupInfo = new NativeProcessStartupInfo();
  
  private var originalAudio:String = "C:\Users\User_Name\Desktop\test.wav";
  
  info.executable = File.applicationDirectory.resolvePath("assets\\nativefiles\\ffmpeg.exe");
  
  private var args: Vector.<string> = new Vector.<string>();
  
  args.push("-i", originalAudio, "-vn", "-ar", "44100", "-ac", "2", "-ab", "192", "-acodec", "libmp3lame", "-f", "mp3", (tempDir.nativePath + '\\' + audioId + '.mp3'));
  
  info.arguments = args;
  
  private var nativeProcess:NativeProcess = new NativeProcess();
  
  nativeProcess.start(info);
  
  nativeProcess.addEventListener(Event.COMPLETE , onComplete);
  
  
  
  protected function onComplete(event:Event):void
  
  {
  
      trace("Conversion Completed");
  
  }
  
  </string></string>

  But problem is that I am unable to trace the complete event control after file conversion. I have already added a complete event on nativeprocess (i.e nativeProcess.addEventListener(Event.COMPLETE , onComplete);
  but the control not coming in to the function onComplete after conversion.

  So any body have an idea why the control not coming into the function or how to add event listener to trace complete event function.