Post-production is part of the process of filmmaking, video production, radio production and photography. Post-production includes all stages of production occurring after shooting or recording individual program segments.
Traditional (analogue) post-production has mostly been replaced by video editing software that operates on a non-linear editing system (NLE).
In television, the phases of post-production include: editing, video editing, sound editing, animation and visual effects insertions, viewing and the start of the airing process. It is imperative that post-production executes and oversees the preparation until the final product is completely ready.
Professional post-producers usually apply a certain range of image editing operations to the raw image format provided by a photographer or an image-bank. There is a range of proprietary and free and open-source software, running on a range of operating systems available to do this work.
The first stage of post-production usually requires loading the raw images into the post-production software. If there is more than one image, and they belong to a set, ideally post-producers try to equalize the images before loading them. After that, if necessary, the next step would be to cut the objects in the images with the Pen Tool for a perfect and clean cut. The next stage would be cleaning the image using tools such as the healing tool, clone tool, and patch tool.
The next stages depend on what the client ordered. If it's a photo-montage, the post-producers would usually start assembling the different images into the final document, and start to integrate the images with the background.
In advertising, it usually requires assembling several images together in a photo-composition.