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• publish chromium rendered view to ffmpeg/libav

  21 février 2014, par user3337537

  I would like to publish chromium rendered view to ffmpeg/libav stream instead of showing it on the operating window system.
  Also plugins like flash should be included in the stream. I don't know much about chromium rendering yet.

  I know there are command like "ffmpeg -f x11grab -s 1280x720" ... But i would like to do this right from chrome to publish mutliple tabs at the same time.

  How would you estimate the development effort for that ?

• Killing all child processes

  12 juin 2016, par ErraticFox

  I have written a onclick function that runs child process for a command line for ffmpeg. Though I can’t seem to force close or kill the process in the middle of it. I’ve tried multiple ways such as child.kill() along with SIGINT, SIGKILL, SIGHUP, SIGQUIT, and SIGTERM and it continuously runs in the background still until finished or killed in the task manager. So how can I kill all the process related to the exec ?

  Here’s my current code :

  function submitBtn() {
  
      var selectVal1 = $("#inputFile1 option:selected").val(),
  
          selectVal2 = $("#inputFile2 option:selected").val(),
  
          selectOpt2 = $("#inputFile2 option:selected").text().toLowerCase()
  
  
  
      if (!selectVal1 || !selectVal2) {
  
          Materialize.toast('Please select your formats', 4000)
  
      } else if ($("#uploadFile").val() === '') {
  
          Materialize.toast('Please select your file', 4000)
  
      } else {
  
          var process = require("child_process")
  
          var inputDir = uploadFile.files[0].path
  
          var dir = inputDir.split("\\")
  
          var pop = dir.pop()
  
          var outputDir = dir.join("\\")
  
          var cmd = `ffmpeg -y -i "${inputDir}" "${outputDir}\\output.${selectOpt2}"`
  
  
  
          $("#load").removeClass("disabledLoad")
  
          func = process.exec(cmd, function(error, stdout, stderr) {})
  
  
  
          func.on('exit', function() {
  
              $("document").ready(function() {
  
                  $("#load").addClass("disabledLoad")
  
                  Materialize.toast('Conversion compelete!', 4000)
  
              })
  
          })
  
  
  
      }
  
  }
  
  
  
  function exitBtn() {
  
      //var remote = require('electron').remote
  
      //var window = remote.getCurrentWindow()
  
      //window.close()
  
      func.kill()
  
  }

  I even tried renaming process to proc and then doing

      process.on('exit', function () {
  
      console.log('process is about to exit, kill ffmpeg');
  
      func.kill()
  
  })

  in exitBtn but still nothing. It doesn’t give errors or log my string I put.

• Show a tcp video stream (from FFPLAY / FFMPEG) in an C# application

  27 août 2013, par Rob Quist

  I try to make my Parrot AR Drone 2.0 work with a windows machine.

  I have a simple C# application to control it - but now i want the video stream inside of my application.

  If i execute ffplay tcp://192.168.1.1:5555 it connects to the videostream and shows a window with the video.

  How can i get this video iside of my application ? Like, a simple 'frame' or 'image' that gets filled with that content ?

  I have never worked that much with C# so any help would be awesome.