User:LordSputnik/Unified Metadata Format: Difference between revisions
From MusicBrainz Wiki
Jump to navigationJump to search
LordSputnik (talk | contribs) No edit summary |
LordSputnik (talk | contribs) No edit summary |
||
Line 108: | Line 108: | ||
|binary |
|binary |
||
| |
| |
||
|- |
|||
!url |
!url |
||
|A URL where the image can be accessed. |
|A URL where the image can be accessed. |
Latest revision as of 23:56, 5 December 2013
Unified Metadata Format is a proposed structure for storing data within and exchanging data between metadata applications. It is based on the JSON format.
Key Features
- JSON-based - supports key-value pairs, nesting and lists.
- A standard set of key names which can be mapped to both MusicBrainz webservice data and tags in common metadata formats.
- Non-standard names are stored in common metadata formats in a block, so they aren't lost on conversion and can be read back into UMF if needed.
- Everything is an entity or a basic value (string, integer, date, etc.) - entities always have mappings to MusicBrainz IDs, and sometimes other IDs too.
Basic Conceptual Types
- string
- A sequence of unicode characters.
- integer
- A whole number.
- decimal
- A number which may have a decimal point.
- datetime
- A combination of a date and a time.
- time
- Just a time, with no particular point of reference.
- binary
- A piece of base64 encoded binary data.
- object
- An object containing a collection of keys.
- list
- A list of values.
Each key is associated with a particular type - the value for the key should be of that type.
Entity Properties
- musicbrainz
- specifies a MusicBrainz MBID related to the entity.
- amazon
- specifies an Amazon ASIN related to the entity.
- image
- an image representing the entity.
Release Properties
Key | Description | Standard Type | ID3 Mapping |
---|---|---|---|
title | The title of the release | string | TALB |
artist | The artists credited on the release | string | TPE2 |
Recording Properties
Key | Description | Standard Type | ID3 Mapping |
---|---|---|---|
title | The title of the recording | string | TIT2 |
artist | The artists featured on the recording | string | TPE1 |
Track Properties
Key | Description | Standard Type | ID3 Mapping |
---|---|---|---|
title | The title of the track, usually as given on the release | string | TIT2 |
artist | The artists performing on the track, as credited on the release | string | TPE1 |
id | The number or text used to identify the track. Commonly referred to as the track number. | string | TPE2 |
position | The position of the track within the medium. | integer | TRCK |
medium | The number of the medium that the track comes from. | integer | TPOS |
Image Properties
Key | Description | Standard Type | ID3 Mapping |
---|---|---|---|
mime | The mimetype of the image file. | string | |
data | The data of the image. | binary | |
url | A URL where the image can be accessed. | string |
Example
{ "release": { "title":"Vol. 3: (The Subliminal Verses)", "musicbrainz":"cffc2fa1-0bc1-3dc0-b865-d79533d79dbc", "discogs":1826346, "media":[ { "tracks":[ { "id":0, "recording": { "musicbrainz":"77d7867d-c6ed-406c-9bbb-59756f9f8ded" } ] } ] } }