Media atoms

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

Topics

Describing media

• Media atom ('mdia')
• Media header atom ('mdhd')
• Extended language tag atom ('elng')
• Handler reference atom ('hdlr')
• Media information atoms
• Video media information atom ('minf')
• Video media information header atom ('vmhd')
• Sound media information atom ('minf')
• Sound media information header atom ('smhd')
• Base media information atom ('minf')
• Base media information header atom ('gmhd')
• Base media info atom ('gmin')
• Data information atom ('dinf')
• Data reference atom

See Also

Movies

• Movie atoms
• Track atoms
• Sample atoms
• Structuring movie data and features