if (is_admin()){
  add_action('admin_init', 'wl_admin_init' );
  function wl_admin_init(){
    add_filter('attachment_fields_to_edit', "wl_attachment_fields_to_edit", null, 2);
    add_filter('media_send_to_editor', 'wl_media_send_to_editor', null, 3);
  }
  function wl_attachment_fields_to_edit($form_fields, $post) {
    $n=strpos($post->post_mime_type,'video/');
    if ($n!==FALSE){
      $type=strtolower(substr($post->post_mime_type,$n));
      if ($type=='quicktime') $type='mp4';
      if ($type=='video/quicktime') $type='mp4';
      $url=wp_get_attachment_url($post->ID);
      $poster=get_option('videojs_poster');
      $width=get_option('videojs_width');
      $height=get_option('videojs_height');
      $autoplay=get_option('videojs_autoplay');
      $preload=get_option('videojs_preload');
      $form_fields['url']['html'].="<button type='button' class='button urlpost' title='" . "[video $type=\"$url\" width=$width height=$height poster=\"$poster\" preload=$preload autoplay=$autoplay]" ."'>" . __('Video JS') . "</button>";
    }
    return $form_fields;
  }
#a bit hacky but pretty robust
  function wl_media_send_to_editor($html, $send_id, $attachment){
    if ('['==substr($attachment['url'],0,1)){
      return $attachment['url'];
    }
    return $html;
  }
}