limit_rate dynamically using $arg - security

[shoshomiga]

I've been looking for a way to limit videos to their bitrate to save
bandwidth and I've come up with this code

            if ($arg_LIMITSPEED) {
              set $limit_rate $arg_LIMITSPEED;
            }

It works but I would like to know if this code would be secure to use on
a production server.

I am not worried about users setting their LIMITSPEED high on their own
because I am limiting speeds at the network level as well.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,224950,224950#msg-224950