It is very common for photographs to require cropping, resizing, color correction, added text, etc. These tools are very capable for that type of work. There are quite a number of different file formats for storing graphical information. A vector representation of an image consists of a list of objects and their properties. The color or intensity of each pixel is stored.
Television is a raster medium.
Vector Each object is represented by a mathematical description. Essentially, it is just a list of instructions on how to draw the picture, rather than the picture itself. It can be scaled without limit. To double the size of the picture, just multiply the coordinates by two. There is no distortion caused by the scaling.