File Interchange Handbook: For Images, Audio, and Metadata

Phil Tudor
The content creation process for audio, video, and film typically involves a sophisticated postproduction phase. During postproduction, the source material created in the production phase is manipulated and assembled into a finished work for distribution by a delivery process. Figure 6.1 shows the main phases of the content creation process.
The following operations are common in the postproduction phase:
Editing material
Applying color correction
Creating visual effects
Creating layers, graphics, and titles
Creating animation
Creating computer-generated imagery (CGI)
Mixing multichannel audio
Applying audio effects and processing
Sequencing and mixing synthetic instruments (MIDI)
Creating captions and interactive elements
The dominant means of performing postproduction operations today are computer-based authoring tools using file-based source material (i.e., material transferred to computer file systems from acquisition media such as tape or film). Although the use of authoring tools is concentrated in postproduction, authoring tools are increasingly applied to planning and production activities.
Authoring tools are specialized for certain kinds of operations. Depending on the nature of the finished work, several tools may be used in combination to perform the required range of operations. How the work is divided up into different operations the workflow and the choice of tools have as much to do with economic efficiency as with the desired result. Efficient workflows make effective use of different operator skills and of a mix of tools that have appropriate performance and price for the operations they are performing.
For example, Figure 6.2...