In a digital image, aliasing manifests itself as a moire pattern or wave effect. This spatial aliasing in the pattern of the image makes it look like it has waves emanating from a certain area. This happens because the pixelation of the image is bad. When our eyes interpolate these pixels, they just don’t look good.
Aliasing can also occur in videos where it is called temporary aliasing because it is caused by the frequency of the frames and not by the pixelation of the image. Because of the limited frame rate, a fast-moving object looks like a wheel, as if it were turning backwards or too slowly, this is called a cartwheel effect. This is determined by the frame rate of the camera and can be avoided by using temporary aliasing reduction filters during filming.