User:LordSputnik/Unified Metadata Format

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.

Entity Properties

musicbrainz

specifies a MusicBrainz MBID related to the entity.

amazon

specifies an Amazon ASIN related to the entity.

Release Properties

Key	Description	ID3 Mapping
title	The title of the release	TALB
artist	The artists credited on the release	TPE2

Recording Properties

Key	Description	ID3 Mapping
title	The title of the recording	TALB
artist	The artists featured on the recording	TPE2

Track Properties

Key	Description	ID3 Mapping
title	The title of the track, usually as given on the release	TALB
artist	The artists performing on the track, as credited on the release	TPE2
id	The number or text used to identify the track. Commonly referred to as the track number.	TPE2

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"
                           }
                   ]
               }
           ]
       }
   }