If you’ve ever spent an hour or more rotoscoping something out of a shot in a video, you will understand why these VFX reels are so impressive. Mackevision is one of the many VFX studios that work on the hit HBO Series Game of Thrones, and they put together a rather impressive making of reel for their work on season 4. It looks like their team covers a bit of everything: rotoscoping, 3D design, and even matte painting. Watch the video above and see how they break down their shots piece by piece.