Drupal integration for streaming video
Based on your comments and the fact you will be writing some custom code for the video player in your site. You can easily include the Drupal user id into flash variables.

In order to do this, you will load the Drupal user object of the currently logged in user. This is quite easy to do.

&lt;?php

$global $user;
$drupaluserid = $user-&gt;uid

?&gt;