Facebook video adverts...?

[вяу ♥]

My facebook has always had adverts at the side but recently there's video advertisements in like the middle of the page and every so often it starts playing which is really annoying if i've got my sound up watching youtube videos or something. I press mute on the advert or refresh the page so it stops playing but it always unmutes itself or starts playing again. I never used to get them and i don't know if it's just me or everyone has them but is there a way i can remove them? Thanks in advance.

xx