Timed metadata sample description
An atom that defines how to interpret timed metadata media samples.
Overview
The timed metadata sample description contains information that defines how to interpret timed metadata media samples. This sample description is based on the standard sample description header, as described in Sample description atom ('stsd').
The metadata sample description is a derived sample description format which describes metadata values represented in atoms. It may also include other atoms not holding metadata values.
Zero, one, or more values may be carried in a metadata sample description for a particular time.
The data format field contains the format of the timed metadata media, which is set to 'mebx'.
The metadata sample description must contain a metadata key table atom and optionally contains a bit rate atom following the standard sample description atom header, defined below. Other atoms may be introduced in the future.
- Metadata key table
An atom containing a table of keys and mappings to payload data in the corresponding timed metadata media samples.
- Bit rate atom
An optional atom that contains data that signals the bit rate of a media stream.