*            == GenericAssetType
MainPicture  == PictureTrackFileAssetType		--> GenericAssetType
MainSound    == SoundTrackFileAssetType			--> GenericAssetType
MainSubtitle == SubtitleTrackFileAssetType		--> GenericAssetType
MainMarkers  == MarkersAssetType				--> GenericAssetType

------------------------------

TrackFileAssetType :
	- <GenericAssetType> 
	- KeyId
	- Hash

------------------------------

PictureTrackFileAssetType :
	- <TrackFileAssetType>
	- FrameRate
	- ScreenAspectRatio

MainPicture :
	- <PictureTrackFileAssetType>

MainStereoscopicPicture:
	- <PictureTrackFileAssetType>

---------------------------

SoundTrackFileAssetType :
	- <TrackFileAssetType>
	- Language

MainSound : 
	- <SoundTrackFileAssetType>

--------------------------

SubtitleTrackFileAssetType :
	- <TrackFileAssetType>
	- Language

MainSubtitle :
	- <SubtitleTrackFileAssetType>

ClosedSubtitle:
	- <SubtitleTrackFileAssetType>

-----

CaptionTrackFileAssetType:
	- <TrackFileAssetType>
	- Language

MainCaption:
	- <CaptionTrackFileAssetType>

ClosedCaption:
	- <CaptionTrackFileAssetType>

--------------------------

MarkerAssetType :
	- <GenericAssetType>
	- MarkerList
		- Marker 
			- Label
			- AnnotationText
			- Offset

MainMarkers:
	- <MarkerAssetType>

---------------------------------

CompositionMetadataAssetType:
	- <GeneraticAssetType>

CompositionMetadataAsset:
	- <CompositionMetadataAssetType>
	+ FullContentTitleText
	+ ReleaseTerritory
	+ VersionNumber
	+ Chain
	+ Distributor
	+ Facility
	+ AlternateContentVersionList
	+ Luminance
	+ MainSoundConfiguration
	+ MainSoundSampleRate
	+ MainPictureStoredArea
	+ MainPictureActiveArea
	+ MainSubtitleLanguageList
	+ ExtensionMetadataList
	+ ...

--------------------------------

DataTrackFileAssetType:
	- <TrackFileAssetType>
	- DataEssenceCoding / DataType (Atmos)
	- ...

AuxData:
	- <DataTrackFileAssetType>