Almost every scene of the final one way or another was removed on a green background. There are no special layouts in the frame that are often used to simplify the subsequent installation and the imposition of graphics, no statists. All elements, thanks to which the scene becomes truly spectacular, were drawn already after filming.
From the roller, we learn that Captain America in front of the camera waves not Myölnir, but only a tree from him; The majestic hammer in the smallest details is recreated by specialists in special effects. At the "scared" Tanos, which replaces the Tanos itself, by the way, there is no head in one of the scenes of the roller. In the comments to the video already suggested that the head disappeared after the previous doubles. Is this so, the creators of the roller do not confirm.
The video shows how many special equipment was used to "pull from the sky on the battlefield" of any hero. Instead of giants on the site, volumetric figures were wrapped in chromium; In one such drax, the knife is stunned. Captain America at some point is struggling not even with a figure depicting Tanos, but with a man dressed in a small piece of his armor.
Recall, earlier work on special effects to films about the avengers showed the studio Framestore. In her video, viewers are watching the consideants of the Avengers are drawn in editors and how experts create all adorable raccas using modern technologies.