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• Twitter gives error on ffmpeg generated video “The media you tried to upload was invalid.”

  9 mai 2018, par TrooPHP Developer

  ffmpeg generated video gives error while sharing on twitter. the error is :

  “Cannot read property ‘code’ of undefined”

  I am generating video from audio.
  my sample code Example is :

  ffmpeg -i audio.webm -i image.png -vcodec libx264 -pix_fmt yuv420p -strict -2 -acodec aac video.mp4

  I am directly trying to upload generated video to twitter website and video size is just 6 seconds.

• How to download HLS audio in Android [closed]

  16 juillet 2022, par Mayur

  I would like to download HLS audio stored in my server using Exoplayer or any other mechanism.. Also once the audio is downloaded I would like to encrypt it.

  


  Can anyone please tell me how do I achieve it. I have read most of the article but could not find any help.

  


  I would like to tell the person who has closed the question, I am asking the question as I need a bit help in it and I believe my question is clearly understandable. So even if you can't come forward and answer the questions to support a developer, atleast you must allow others to answer who can have any idea on it, instead of closing it.

  


• Tainted canvas may not be exported. When trying to send it via ajax to php file

  6 décembre 2015, par romikette F

  I am trying to capture an image from a local video so I can make a thumb out of it. I am trying to avoid using video conversions (like ffmpeg) to save server resources and keep my videos in theyr original format.
  I’we been reading about tainted canvases and I understand I am trying to breach the browsers security protocols. But this article https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image#What_is_a_tainted_canvas said that I could pull an image if it were from a different source (something something).
  So far I have this :

  <video src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" controls="controls"></video><br />
  
  <button>Capture</button> <br /><br />
  
  <div></div>
  
  <canvas></canvas> <br /><br />

  and :

  function capture(){
  
  var canvas = document.getElementById('mYcanvas');
  
  var video = document.getElementById('video');
  
  canvas.getContext('2d').drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
  
  
  
  function getBase64() {
  
  var img = document.getElementById("mYcanvas");
  
  var canvas = document.createElement("canvas");
  
  canvas.width = img.width;
  
  canvas.height = img.width;
  
  var ctx = canvas.getContext("2d");
  
  ctx.drawImage(img, 0, 0);
  
  var dataURL = canvas.toDataURL("image/png");
  
  alert(dataURL.replace(/^data:image\/(png|jpg);base64,/, "")); 
  
  
  
  $.ajax({
  
      url: 'submit_image.php',
  
      type: 'POST',
  
      data: {
  
          imgdata: dataURL
  
      },
  
      success: function (res) {
  
              document.getElementById("response").innerHTML = res;
  
          }
  
  });
  
  }
  
  getBase64();
  
  
  
  }

  Never mind the php. It dose not receive anything.