Add HTML5 support for Dailymotion videos

Thanks, this code works fine for me, if someone want this update without hacking module you can use hook :

/**
 * Implements hook_video_filter_codec_info_alter().
 * Add video filter html5 support for dailymotion.
 */
function MY_MODULE_video_filter_codec_info_alter(&$codecs) {
  if (!isset($codecs['dailymotion']['html5_callback'])) {
    $codecs['dailymotion']['html5_callback'] = 'MY_MODULE_video_filter_dailymotion_html5';
  }
}

/**
 * Add video filter html5 support for dailymotion.
 */
function MY_MODULE_video_filter_dailymotion_html5($video) {
  $attributes = array(
    'autoplay' => $video['autoplay'] ? 'autoplay=1' : 'autoplay=0',
  );
  $video['source'] = 'http://www.dailymotion.com/embed/video/' . $video['codec']['matches'][1] . '?' . implode('&', $attributes);

  return video_filter_iframe($video);
}

Committed.

Needs to be ported to the 8.x-1.x branch.