What is The benefit of Layer 7 filter in Mikrotik 3.22

Hello Guys

I am new In this Forum. i am using mikrotk 2.9.27 before 1 year later but now i am using Mikrotik 3.22
I Authenticate my users by IP+MAC.

Should Anybody tell me whay is the use of layer7 Filter In mikrotik, When i am using layer7 filter some video clips dosen’t play, if anybody
know what is the prob so pls help me.

If you are dropping something based on layer7 then it is possible that video stream has the same pattern that is matched by L7 and gets dropped.

So should i cache youtube videos with the help of Layer7 & How Pls Give the code

& Also Should anybody know how to operate a mikrotik through Linux with Webmin

Thanks & B.Regards
M.NOMAN