Replying to The ads are seriously messing up.

Ok this is getting so annoying. Everytime I try to watch a video. There are the beginiing ads. I dont care that there are ads except the fact they dont play more specificlly the LINE ads. They play at like 2 seconds per time and then just stop and go again in another 30 seconds. And finally when the ads gets down to 2 seconds left. It just stops. And the only way i can get it to play is by exiting the page or refreshing it. Its getting really annoying. Can anyone tell me why?