3.1.1.1.2.1 Track Description
The Track Description data element encapsulates all metadata that is specific to a single track.
Track Metadata: A set of metadata that is common to all fragments for the track. Track Metadata contains the following fields, specified in section 2.2.2.5:
Index
Bitrate
MaxWidth
MaxHeight
SamplingRate
AudioTag
BitsPerSample
PacketSize
CodecPrivateData
NALUnitLengthField
Custom Attributes Collection: A collection of Custom Attribute Description data elements, as specified in section 3.1.1.1.2.1.1.