One of the most common visual effects tasks is to replace an image or video in a shot with another—be it a computer screen, a picture on a wall, a bumper sticker on a car, etc.
Sometimes removing unwanted objects is the most common VFX, like logos, wires, brands, cleanups
Rotoscoping is an animation technique that animators use to trace over motion picture footage, frame by frame.
By tracing an object, the silhouette created (called a matte) that can be used to extract that object from a scene for use on a different background.
3D Cloth Simulation
After various takes in the set, unrolling the poster, It was really hard syncyng the dolly camera movement with the props pupetters, because it was shot in high speed.
We decide production wise to move forward, to simulate this in 3D to have full control of the speed, cloth reactions, and better legilibility on the poster. Anyways from the original shot I used some shadows and reflections in the final shot. In the final edit the shot was also speed up.
Screen Replacement is one of the most common VFX tasks you'll come across. Sometimes it can be taken care of easily just by using a tracker like Mocha or even the corner pin tracker in After Effects.