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• Internet Explorer 11 HTML5 audio duration = infinity issue

  27 février 2016, par unbirth

  Today I’ve met an unpleasant issue. There is a website with a custom HTML5 audio player. After the page loads, I try to echo document.getElementById("myAudioId").duration, it is needed in order to make navigation possible. In every other browser it works just fine, the duration is showed, but IE11 works differently - it shows that duration equals Infinity. But as I noticed, when the song is buffered to the end, the duration magically appers and the navigation works. In other browsers everything works from the start. The content-length headers are set up. What could it be ?

  UPD : Other sites with HTML5 audio let me see the duration from the very start. The duration, I guess, is part of metadata and could be loaded even without preloading the audio file using preload="metadata", but it also doesn’t work.

  UPD2 : I’ve also tried playing around with jsfiddle and created the same audio tag there with same MP3 audio - there was the same situation. But then I’ve inserted link to another MP3 there, from another site - and it worked !. More than that, I’ve uploaded this second song to the first problematic website and after that the song that worked perfectly couldn’t also show me its duration and stuff. So now I think it’s something on server side. But don’t know what it is.

  UPD3 : Finally, I’ve been told that files are converted using FFMPEG to MP3 128bit, then they stop being OK. Now I need to find how should I convert MP3s so they are OK.

• Making a FFmpeg stream seekable

  29 avril 2019, par Luke Penrose

  I am streaming my webcam output to my website using FFmpeg and then embedding with the video tag however the controls on the video element don’t allow me to seek through the stream. Does anyone have any idea how to allow seeking through the live stream.

• ffmpeg Image2pipe command Stuck infinitely while taking image stream from PhantomJS

  15 mai 2019, par Link2 Video

  Let me Explain by my Code what issue i am facing...

  This is my js file for using with PhantomJS. It simple tell it to open a page and take screenshots of it and store them in stdout.

  var page = require("webpage").create();
  
  page.viewportSize = { width: 640, height: 480 };
  
  page.open("http://www.goodboydigital.com/pixijs/examples/12-2/", function() {
  
  setInterval(function() {
  
  page.render("/dev/stdout", { format: "png" });
  
  }, 25);
  
  });

  And this is the cmd command I’m running to receive the captured images in ffmpeg in Windows Command Prompt.

  phantomjs runner.js | ffmpeg -y -c:v png -f image2pipe -r 25 -t 10  -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart dragon.mp4

  This command successfully starts the processes of PhantomJS and ffmpeg. But nothing happens for quite some time, after 15 minutes it gives an error saying :

  "Failed to reallocate parser buffer"

  thats it. I have referenced this code from this site on which the developer claims that it works
  https://mindthecode.com/recording-a-website-with-phantomjs-and-ffmpeg/

  Please see the attached Image for more explanation.
  Image of Code