Sound Media Information Atoms

QuickTime Movie File Format Specification, May 1996

Sound Media Information Atoms

Sound media information atoms are the highest-level atoms in sound media. These atoms contain a number of other atoms that define specific characteristics of the sound media data. Figure 0-23 shows the layout of a sound media information atom.

Figure 23 The layout of a media information atom for sound

The sound media information atom contains the following data elements.

Size: A 32-bit integer that specifies the number of bytes in this sound media information atom.
Type: A 32-bit integer that identifies the atom type; this field must be set to ' minf' .
Sound media information: The sound media information header atom (a required atom), which is described in the next section.
Handler reference: The handler reference atom (a required atom), which contains information specifying the data handler component that provides access to the media data. "Handler Reference Atoms" discusses handler reference atoms. The handler uses the data information atom to understand the media's data references.
Data information: The data information atom, described in "Data Information Atoms" .
Sample table: The sample table atom, described in "Sample Table Atoms" .