Priorize destination tcp port

Hello,

I have installed Tvheadend service in my fathers home. I have a RB450G device on it and it works great.

In my home I have a RB750GL and I connect to my father Tvheadend service (TCP 9981 and 9982).

Thveadend is a tv streaming service, it works well most of the time, but sometikes I get pixeled image. I want to priorize all traffic that goes to 9981 and 9982 TCP from my home router.

How could I mark and priorize it?

Thanks for your help.

Kind regards.