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Descriptive fields are modifiable fields that describe files for purposes such as discovery.

Key	Sub Key	Description	Format	Read-only	Searchable	Sortable	Harvested
Title		The title of the file
Description		Description about the file
CreationDate		The date and time the file was originally created	yyyy:MM:dd HH:mm:ss
RightsOwner		The name of the (copyright) owner of the file
Rights		A description about how the file can or can not be disseminated.
Keywords		Series of keywords about the file	ListField
Keywords	Keyword	Sub field of Keywords containing an individual keyword
Categories		Series of categories about the file	ListField
Categories	Category	Sub field of Categories containing an individual category
Publisher		Publisher of the file
Authors		A list of various authors of the file	MulitItemField
AuthorsAuthor		Sub field of Authors containing an individual author
Address		Address of corresponding with the Location	MulitItemField
Address	Formatted	Sub field of Address describing the full address in a single line, e.g. Trump Tower, 725 5th Ave, New York, NY 10022, Verenigde Staten
Location		GPS coordinates corresponding with the Address
Publications		List of locations where the file is published	ListField
Publications	Comment	Sub field of Publications describing a comme
OriginalFilename		The name of the file as it was ingested into MediaHaven
UploadedBy		The name of the user that uploaded the file

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Key	Description	Format	Read-only	Searchable	Sortable
OriginalExtension	The extension of the file as it was ingested into MediaHaven
FileSize	The size of the file in bytes				yes, but lexicographically
Md5	The MD5 checksum of the file
MimeType	The mime type of the file, e.g. image/jpg
PronomId	The Pronom ID is a file identification mechanism developed by the National Archives
Width	The width of the file	pixels			yes, but lexicographically
Height	The height of the file	pixels			yes, but lexicographically
ImageSize	Width times height, e.g 1920x1080	pixels times pixels
ImageQuality	The quality of the image	high (image: 1920x1200, video: 1280x720) medium (image: 1024x768, video: 720x540) low
ImageOrientation	The orientation of the image	panorama (aspect >= 2) landscape (2 > aspect >= 1.1) square (1.1 >= aspect > 0.9) portrait (0.9 >= aspect > 0.5) strip (aspect < 0.5)

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Structural Fields 

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Structural Structural

Structural fields provide how compound files such as collections are put together or how files are related between each other. Three categories exist: Fragments, Ensembles and Relations.

Fragments

Key	Sub Key	Description	Remark	Read-only	Searchable	Sortable
Fragments		Series of fragments belonging to this file. The main fragment which corresponds to the file itself (i.e. the entire video) is non contained in this series, hence this list is empty if the file contains no pure (= non main) fragments.	ListField
Fragments	Fragment	Sub field of Fragments giving the FragmentId of each fragment this file contains	FragmentId
MainFragment		For a pure fragment, this refers the FragmentId of main fragment. For the main fragment this field is empty.	SimpleField
FragmentStartFrames		The start time of a fragment, relative to the start of the media file, expressed in frames against a fictitious 25 frames per second	frames (using a fictitious 25 fps)
FragmentEndFrames		The end time of a fragment, relative to the start of the media file, expressed in frames against a fictitious 25 frames per second	frames (using a fictitious 25 fps)
FragmentDurationFrames		The duration of a fragment, expressed in frames against a fictitious 25 frames per second	frames (using a fictitious 25 fps)
FragmentStartTimeCode		The start time of a fragment, relative to the start of the media file	HH:mm:ss.SSS
FragmentEndTimeCode		The end time of a fragment, relative to the start of the media file	HH:mm:ss.SSS
FragmentDurationTimeCode		The duration of a fragment	HH:mm:ss.SSS

Ensembles

Key	Sub Key	Description	Remark	Read-only	Searchable	Sortable
Collections		Series of collections the file belongs to	ListField
Collections	Collection	Sub field of Collections providing the ID of an individual the collection the file belongs to
Sets		Series of sets the file belongs to	ListField
Sets	Set	Sub field of Sets providing the ID of an individual set the file belongs to
Newspapers		Series of newspapers the file belongs to	ListField
Newspapers	Newspaper	Sub field of Newspapers providing the ID of an individual newspaper the file belongs to

Relations

Key	Sub Key	Description	Remark	Read-only	Searchable	Sortable
Relations		Series of files related with this file. Depending on your installation different sub fields of Relations might be defined.	MultiItemField
Relations	PreviousVersion	Sub field of Relations providing the FragmentId of an individual file which is the previous version of this file	FragmentId
Relations	NextVersion	Sub field of Relations providing the FragmentId of an individual file which is the next version of this file	FragmentId
Relations	Contains	Sub field of Relations providing the FragmentId of an individual file which this file contains	FragmentId
Relations	ContainedBy	Sub field of Relations providing the FragmentId of an individual file that contains this file	FragmentId
Relations	Associated	Sub field of Relations providing the FragmentId of an individual file which is associated with this file	FragmentId

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1. Removed the column Search in this documentation because from now on the keys used in the key search queries match with the flattened key of the field
2. The old search keys are still supported for backwards compatibility compatibility
3. New Technical field PronomId