Supports oEmbed output for both photos and videos uploaded to Picasa.

Support for Picasa URLs;

• http(s)://picasaweb.google.com/{userid}/{albumname}

  Outputs "rich" element which contains the Picasa album.

• http(s)://picasaweb.google.com/{userid}/{albumname}#{photoid}

  Outputs "photo" or "video" element which contains the Photo/Video.

• http(s)://picasaweb.google.com/.*/{userid}/albumid/{albumid}/photoid/{photoid}

  Outputs "photo" or "video" element which contains the Photo/Video.

Don't forget to escape the hash in the URL! Otherwise it will never get to the oEmbed server and you'll get album mode.

Support for the following Google+ URLs (which use Picasa in the background);

• https://plus.google.com/photos/{userid}/albums/{albumid}/{photoid}

  Outputs "photo" or "video" element which contains the Photo/Video.

• https://plus.google.com/photos/{userid}/albums/{albumid}

  Outputs "rich" element which contains the Picasa album.

Picasa Video support is a little tricky because the URLs that the Picasa feed gives back have authentication tokens which expire after a short period.

To work around this the oEmbed server provides a page which uses javascript to re-fetch the authentication tokens when the page is display. This means the server will return an iframe element for video elements.