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• How to make video from images in android ? [on hold]

  1er août 2014, par harsh3898294

  Please tell me how can i do ?

  i want to make mpeg4 or mp4 video from set of images and add audio.
  also added animation between two images.

  i want to make app like
  https://play.google.com/store/apps/details?id=com.movisoft.photostory

• After adding "qscale 0" option in ffmpeg convertation does't work [on hold]

  2 août 2014, par Lika Samsonia

  I want to convert an AVI video to MPEG-4 with ffmpeg and after adding option scale 0 the script doesn’t work.

  shell_exec("ffmpeg -i $temp_name -qscale 0 $upload_dir/jj.mp4");

• Live streaming using FFMPEG to web audio api

  19 janvier 2014, par Nayan

  I am trying to stream audio using node.js + ffmpeg to browsers connected in LAN only using web audio api.

  Not using element because it's adding it's own buffer of 8 to 10 secs and I want to get maximum high latency possible (around 1 to 2 sec max).

  Audio plays successfully but audio is very choppy and noisy.

  Here is my node.js (server side) file :

  var ws = require('websocket.io'), 
  
  server = ws.listen(3000);
  
  var child_process = require("child_process");
  
  var i = 0;
  
  server.on('connection', function (socket) 
  
  {
  
  
  
  console.log('New client connected');
  
  
  
  var ffmpeg = child_process.spawn("ffmpeg",[
  
      "-re","-i",
  
      "A.mp3","-f",
  
      "f32le",
  
      "pipe:1"                     // Output to STDOUT
  
      ]);
  
  
  
   ffmpeg.stdout.on('data', function(data)
  
   {
  
      var buff = new Buffer(data);
  
      socket.send(buff.toString('base64'));
  
   });
  
  });

  And here is my HTML :

  var audioBuffer = null;
  
  var context = null;
  
  window.addEventListener('load', init, false);
  
  function init() {
  
      try {
  
          context = new webkitAudioContext();
  
      } catch(e) {
  
          alert('Web Audio API is not supported in this browser');
  
      }
  
  }
  
  
  
  var ws = new WebSocket("ws://localhost:3000/");
  
  
  
  ws.onmessage = function(message)
  
  {
  
      var d1 = base64DecToArr(message.data).buffer;
  
      var d2 = new DataView(d1);
  
  
  
      var data = new Float32Array(d2.byteLength / Float32Array.BYTES_PER_ELEMENT);
  
      for (var jj = 0; jj < data.length; ++jj)
  
      {
  
          data[jj] = d2.getFloat32(jj * Float32Array.BYTES_PER_ELEMENT, true);
  
      }
  
  
  
      var audioBuffer = context.createBuffer(2, data.length, 44100);
  
      audioBuffer.getChannelData(0).set(data);
  
  
  
      var source = context.createBufferSource(); // creates a sound source
  
      source.buffer = audioBuffer;
  
      source.connect(context.destination); // connect the source to the context's destination (the speakers)
  
      source.start(0);
  
  };

  Can any one advise what is wrong ?

  Regards,
  Nayan