How do you recognise packets from an ads server on youtube?

I want to block ads on my smart tv throw my router and I am using whireshark to capture the ip adress and server adress from which those ads come from and block them in my router firewall.Destination appears only as "Broadcast" bassicaly no ip adress.

Do you have any ideas how I could block these ads through wireshark?This is my first time using wireshark so I'm bassically a noob in this field.If you guys could help me I would be really greatful.