Media atoms

Atoms that describe and define a track’s media type and sample data.

Overview

The media atom contains information that specifies:

The media type, such as sound, video or timed metadata
The media handler component used to interpret the sample data
The media timescale and track duration
Media-and-track-specific information, such as sound volume or graphics mode
The media data references, which typically specify the file where the sample data is stored
The sample table atoms, which, for each media sample, specify the sample description, duration, and byte offset from the data reference