A numeric code that identifies which media format and variant of the media format is used for each sample in an audio track.

The average bandwidth consumed by the track, in bits per second (bps). The value 0 MAY be used for tracks whose bit rate is negligible relative to other tracks in the presentation.

The sample SizeIncludingHeader of an audio track.

The Channel Count of an audio track.

Data that specifies parameters specific to the media format and common to all samples in the track, represented as a string of hex-coded bytes

The FourCC is a vendor extension.

An ordinal that identifies the track and MUST be unique for each track in the stream. The Index SHOULD start at 0 and increment by 1 for each subsequent track in the stream.

The maximum height of a video sample, in pixels.

The maximum width of a video sample, in pixels.

The number of bytes that specify the length of each Network Abstraction Layer (NAL) unit.

The size of each audio packet in bytes (WAVEFORMATEX.BLOCKALIGN).

The Sampling Rate of an audio track.