I know a youtuber Jumbo is using After Effects. In his videos, he adds an image overlay that follows very precisely some circles ( example here : I ATE EVERYONE ?! SOLO AGARIO GAMEPLAY (Agar.io) - YouTube )
I doubt he is doing a frame by frame animation so I guess he's helped by a special tool in After Effects that can track shapes. I just wanted to know if you guys knows how he does this. I tried AFterEffects 3 years ago and it was a bi
Basic position tracking. You might want to read the help.