Help me please.. 
in my network I’m need separate data from video-conference and data?
I’m need script how to separate packet from video-conference and I’m want to limited this Video-conference connection.
because if video-conference exist, this packet can be flooding in network and other packet can’t be delivery.
tank you.. 
You can use mangle to mark conference stream and queues to limit bandwidth for it.
can you explain detail “use mangle to mark conference stream”?
tank you very much..
Note; I know. tank’s
You don’t need script for that:
http://www.mikrotik.com/testdocs/ros/2.9/ip/mangle.php
http://www.mikrotik.com/testdocs/ros/2.9/root/queue.php
Please read documentation, examples included, too.
may kind like this may help u for sample … i used it to qos traffic for my ip cam n web cam
/ ip firewall mangle
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=545 protocol=tcp comment=“Multimedia Mangle”
disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=554 protocol=tcp comment=“” disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=1755 protocol=tcp comment=“” disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=3689 protocol=tcp comment=“” disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=6970 protocol=tcp comment=“” disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=7000-7001 protocol=tcp comment=“” disabled=no
add chain=forward action=mark-connection new-connection-mark=mmx-conn
passthrough=yes dst-port=7070 protocol=tcp comment=“” disabled=no
add chain=prerouting action=mark-packet new-packet-mark=mmx-packet
passthrough=no connection-mark=mmx-conn comment=“” disabled=no
add chain=prerouting action=change-tos new-tos=max-throughput
packet-mark=mmx-packet comment=“” disabled=no
TANK YOU..