Parallax videos utilize a captivating visual technique known as the parallax effect, or 2.5D, to add an illusion of depth and movement to still images. The term "parallax" originates from the Greek word 'parallaxis' and describes how distant objects appear to move at a different rate than objects closer to the observer. This creates an illusion of realistic depth from a 2D image.
At its core, the parallax effect is created by moving different components of a photo at varying rates. Typically, foreground images move more quickly, while background images move more slowly, or even remain static, as the camera or viewpoint shifts. This manipulation of relative motion gives the impression of a three-dimensional space within a two-dimensional image.
To achieve this, still images are often prepared by separating them into layers, such as foreground, midground, and background. These layers are then converted into 3D layers within software like Adobe After Effects or Photoshop, and adjusted in "Z space" (depth). Keyframes are set for camera or layer positions and scales to animate the movement, ensuring a seamless effect where different elements move independently. Areas that become visible due to layer movement are often filled in using tools like Content-Aware Fill.
Here's why the public likes watching parallax videos:
In summary, the public is drawn to parallax videos because they offer a dynamic, engaging, and immersive visual experience that enhances storytelling and makes content more memorable