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Post-production is part of the process of filmmaking, video production, audio production, and photography. Post-production includes all stages of production occurring after shooting or recording individual program segments. 
Post-production consists of many different processes grouped under one name. These typically include:
- When content is shot on film it is typically transferred to video, DPX, or OpenEXR with a telecine or a more modern motion picture film scanner.
- Editing the content of the film or television program.
- Writing, recording and re-recording, and editing the soundtrack.
- Adding visual effects – mainly computer-generated imagery (CGI) which is then composited into the frame.
- Sound design, sound effects, ADR, foley, and music, culminating in a process known as sound re-recording or mixing with professional audio equipment.
- Stereoscopic 3D conversion in the case of content that was shot in 2D which is scheduled to have a 3D release
- Color grading (and color correction) in a color suite.
- Subtitling, closed captioning, or dubbing.
The post-production phase of creating a film usually takes longer than the actual shooting of the film and can take several months to complete because it includes the complete editing, color correction, and the addition of music and sound. The process of editing a movie is also seen as the second directing because through post-production it is possible to change the intention of the movie. Furthermore, through the use of color grading tools and the addition of music and sound, the atmosphere of the movie can be heavily influenced. For instance, a blue-tinted movie is associated with a cold atmosphere and the choice of music and sound increases the effect of the shown scenes to the audience.
Post-production was named a "dying industry" by Phil Izzo of the Wall Street Journal in 2011.  The once exclusive service offered by high-end post-production facilities have been eroded away by video editing software solutions that operate on a non-linear editing system (NLE). As such, many parts of a traditional (analogue) post-production pipeline have been largely surpassed by newer digital workflows.
In television, the phases of post-production include: editing, video editing, color grading, sound editing, animation and visual effects insertions, viewing and the start of the airing process.
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 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[ further explanation needed] 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.
Types of work usually done:
- Advertising that requires one background (as one or more images to assemble) and one or more models. (Usually, the most time-consuming, as often these are image bank images which don't have much quality, and they all have different light and color as they were not controlled by only one photographer in one set location)
- Product-photography that usually requires several images of the same object with different lights, and assembled together, to control light and unwanted reflections, or to assemble parts that would be difficult to get in one shot, such as a beer glass for a beer advertising. (Sometimes to composite one image of a beer glass it requires four or five images: one for the base, one for the beer, one for the label, one for the foam, and one or more for splashing beer if that is desired)
- Fashion photography that usually requires a really heavy post-production for editorial or advertising
Techniques used in music post-production include comping (compiling the best portions of multiple takes into one superior take),   timing and pitch correction (perhaps through beat quantization), and adding effects. This process is typically referred to as mixing and can also involve equalization and adjusting the levels of each individual track to provide an optimal sound experience.  Contrary to the name, post-production may occur at any point during the recording and production process. 
- Audio editing
- Cinematic techniques
- Color suite
- Direct to disk recording
- DTE (direct to edit)
- Dubbing (filmmaking)
- Film editing
- Film score
- Linear video editing
- Negative cutting
- Non-destructive editing
- Non-linear editing system (NLE)
- Offline editing
- Outline of film
- Sound effect
- Special effect
- Stock footage
- Tapeless production
- Tapeless camcorder
- Video editing
- Video editing software
- Video server
- Lynne S. Gross; James C. Foust; Thomas D. Burrows (2005). Video Production Discipline and Techniques (9th ed.). McGraw Hill. p. G11. ISBN 0-07-293548-0.
- Top 10 Dying Industries by Phil Izzo, The Wall Street Journal
- "What is "Comping"? | Sweetwater". 27 January 2016.
- "Crafty Comping".
- Hodgson, Jay Understanding Records, p.231. ISBN 978-1-4411-5607-5.