May be they use different embed code. If we can get the code, we can do it

Code:
    function youtube()
    {
        global $config;
        $vshare_player = "<object width=\"$config[player_width]\" height=\"$config[player_height]\">
		<param name=\"movie\" value=\"http://www.youtube.com/v/$this->video_info['video_name']&autoplay=$config[player_autostart]\"></param>
		<embed src=\"http://www.youtube.com/v/{$this->video_info['video_name']}&autoplay=$config[player_autostart]\" type=\"application/x-shockwave-flash\" width=\"$config[player_width]\" height=\"$config[player_height]\"></embed>
		</object>";
        return $vshare_player;
    }

This is the code we use to generate embed videos. If we have a different code, we replace the code, is same for vshare 2.6