"My 4-Year-Old Son Is Very Hyperactive"

I have 2 boys, Kevin and Alvin, 4 and 1yr old respectively, both were on 6-month exclusive breastfeeding, Had Cow&Gate2 baby formula, Kevin is just too active, he doesn't doesn't even walk at home, he runs even when I take him out (cos he doesn't even play in the compound), he can't stay in a place for 2 minutes except he's watching his favorite cartoon channel GoTv 60, no matter how you beat him he doesn't cry for more than few seconds, he learns too much that he even corrects me his father but the problem is he's too active (I don't want to use the word stubborn). His 11+ mths younger brother is already following his footsteps, their mother shouts and beats Kevin every minute for jumping around in the house like monkey. He even engages in fight with me whenever I want to watch my favorite channels except I beat him thoroughly, he wouldn't allow anyone touch anything that is his. Their mother is fed up and losing weight and she's afraid his Alvin is already acting likewise. I don't know what to do because you can't leave Kevin alone in the house without closed monitoring for a minute else something bad and injurious might happen. All my life, I've never see a kid like my boy, I need advise on what to do, it was worse when he was younger. I don't like beating him like his Mom does but won't have peace at home due to excessive shouting and scolding except he's asleep. Anyone with ideas on how to curtail this?