From The MXF Book

Bruce Devlin


In this chapter we will go through the basic structure of an MXF file. We will illustrate the various structures and components of the MXF file with diagrams and descriptive text. Many of the diagrams will be oriented toward the structure of an MXF file that contains a short movie with long-GOP MPEG video and BWF (Broadcast Wave Format) stereo audio. The MXF file is intended to be played out in a software application and consists of some color bars, slate, the movie, and finally some black/silence. We will look at the two different aspects of an MXF file, the way the file s bytes are physically stored on the disc or tape, and also how the structural metadata describes what the MXF file is intended to represent.

This chapter is intended to be a quick run through the concepts and structures in MXF. All of the topics are covered in more detail elsewhere in the book.

In Figure 2.1, a very simple MXF file is represented. At the beginning of the file, there is the file header; in the middle is the file body; and at the end, the file footer. We will expand on the fine detail of the physical structure of an MXF file later in this chapter. For now, we will look at the structural metadata stored in the header to describe the structure of the MXF file and the multimedia content contained within it.

Figure 2.1: Basic structure...

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Topics of Interest

Bruce Devlin Overview This chapter is organized as an alphabetical reference to the terms and concepts used within MXF. Chapter 2, a general overview of MXF, can be read from start to finish and...

5.3 Structure MXF is quite a complex file format. In order to introduce its inner workings, we will briefly go through its main features and then look at some of the key features in detail. 5.3.1...

Phil Tudor Introduction This chapter describes the MXF data model from the perspective of the AAF data model, from which it is derived. The MXF data model defines the data structures that can be...

Essence Internal Definition: KLV wrapped video, audio, or other data that is used/referenced by the MXF file containing them. Description: This section looks at the linking and usage of internal...

5.4 Metadata We have talked a lot about metadata, but we have not mentioned what metadata is. The common definition is metadata is data about data. In other words, it is data that defines or...