Remove HTML5 video and clear src attribute to prevent leaks.

remove-video.js

// remove audio + video + stop all the downloadin’
// assumes $video and $audio are jQuery selectors for <video> and <audio> tags.
var removeMedia = function () {
  _.each([$video, $audio], function ($media) {
    if (!$media.length) return;
    $media[0].pause();
    $media[0].src = '';
    $media.children('source').prop('src', '');
    $media.remove().length = 0;
  });
};