Rather than using an external service like Embed.ly to retrieve thumbnails, all the data is embedded within Twitter Entities.

So, if you request a status using "include_entities=true", you will be able to grab the image and display the thumbnail using the following code.

function twitter_get_media($status) {
   if($status->entities->media) {

      $url = $status->entities->media[0]->media_url_https;

      $width = $status->entities->media[0]->sizes->thumb->w;
      $height = $status->entities->media[0]->sizes->thumb->h;

      $media_html = "<a href="" . $url . "" target='_blank'>";
      $media_html .=  "<img src="" . $url . ":thumb" width="" . $width .
         "" height="" . $height . "" />";
      $media_html .= "</a><br />";

      return $media_html;
   }
}

So, a tweet like this: https://twitter.com/twitter/status/76360760606986241 Will render like this (in Dabr):

Notes

This is very rough and ready proof of concept code. Beware of the following:

• This will only take the first image from the tweet.
• Only images are supported - I'm not sure how their proposed video sharing will work.
• There's no error checking.
• In the above code, the https URL is used - if you want a non-SSL link, you'll need to remove the "_https"

Enjoy!