add oembed provider

Question

I want to add oembed provider to my buddypress activity content

I found this function

<?php wp_oembed_add_provider( $format, $provider, $regex ); ?> 

I know I need it to add with init filter

I've contacted developers of that site and they gave me oembed link.

so site is http://www.myvideo.ge/

and they gave me this link: http://embed.myvideo.ge/flv_player/player.php?video_id=xxxx.format

so if video is http://www.myvideo.ge/?video_id=2119027 I need to contact http://embed.myvideo.ge/flv_player/player.php?video_id=2119027.mp4

But I have no Idea how to sum everything this