media-metadata-examples
This is an exploratory page to be used for storage of various multimedia metadata profiles currently in use around the web. As this is a very, very early exploration, we should include as many types of multimedia as possible in the opening discussion - but please be sure to place your profiles in the correct portion of this page.
Purpose of this exploration (or : The Problem)
The purpose of the studies on this page is to determine the feasibility and demand for a flexible, semantic markup format for providing metadata alongside linked multimedia files. Typically, this metadata is stored within the header of the media file itself - which has massive implications for any application where metadata is to be indexed, searched, or made externally accessible. Of course, even if you could easily access the correct portions of a media file remotely, you'd still have to cope with a multitude of open and proprietary metadata formats, each with it's own distinct fieldset, nomenclature and storage method.
This study aims to make a start at solving this problem.
Still image
- EXIF
- RDF for self-describing images
- An Indexing and Querying System for Online Images Based on the PNG Format and Embedded Metadata
- Describing and retrieving photos using RDF and HTTP
Audio
- iTunes
- Album : String
- Artist : String
- Beats Per Minute : Number
- Bit Rate : Number
- Comment : Blob
- Composer : String
- Genre : String or Foreign ID
- Disc Number : Number
- Kind : Proprietary - could be implimented as MIME type
- My Rating : Number < 5
- Sample Rate : Number
- Size : Number
- Time : Number
- Track Number : Number
- Year : Number
- Additional metadata used internally by the application : Date Added (Timestamp), Date Modified (Timestamp), Equalizer (foreign ID), Play Count (Number), Grouping (Internal)
- Noteable absences : Tags, License, Copyright year. Also note common complaints about ID3 and classical music.
Podcasts
- iTunes podcast: http://phobos.apple.com/static/podcast_specifications.pdf
- Media RSS: http://search.yahoo.com/mrss
Video
- EXIF - (Yes, the spec deals with video taken by still cameras. -- RyanKing)
- MPEG-7 - MPEG-7, formally named "Multimedia Content Description Interface", is a standard for describing the multimedia content data that supports some degree of interpretation of the information meaning, which can be passed onto, or accessed by, a device or a computer code. (Very powerful, but you have to pay for documentation -- ChristopherA 01:53, 29 Jun 2005 (PDT))
- SMIL - Synchronized Multimedia Integration Language (SMIL, pronounced "smile") enables simple authoring of interactive audiovisual presentations. (Not exactly video, but has a lot of useful video-related features in it. -- ChristopherA 01:55, 29 Jun 2005 (PDT))
Interactive
Offline Media
(I'm not sure if you want to open the scope up this much.)