Audio Information

Tag Frame Reference

This document contains a reference and comparison chart of the different (proposed) tag frames to be used in the Matroska, ID3v2.x, Vorbis, APEv2 and Resource Interchange File Format (RIFF) tags. The Dublin Core elements are included as well.

Note that this list is still unfinished and being worked on. Please let me know if this document contains any errors so far.
Three discussions have been started about this matter:

This document is a compilation of information which is available in the documents listed below.

Legend

Marking	Explanation
1	Unofficial though generally accepted/used tags
2	Symbolic names as used in foobar2000 to be more descriptive
3	Combined in one frame separated by a slash '/'
4	Combined in one frame separated by a slash '/'
5	The same frame can be used for different date indications. Add a space after the date and any text to describe the type of date
6	There is no destinction between the encoder setting and the software or hardware
7	Nested in ORIGINAL level
8	Nested in ARTIST
9	Nested in PUBLISHER
10	Nested in ORIGINAL_MEDIA_TYPE
11	Nested in COPYRIGHT
12	Nested in ARTIST, LEAD_PERFORMER or ACCOMPANIMENT
	Not "officially" confirmed being a correct mapping
	Nested Information (tags contained in other tags)

Tag Frame Reference

Matroska	ID3v2.4.0		Vorbis	APEv2	RIFF	iTunes AAC	Dublin Core		Description
© 2004-2007 by Age Bosma
Organizational Information
PART_NUMBER									Number of the current part of the current level.
PART_NUMBER	TRACKNUMBER[2][3]	TRCK	TRACKNUMBER	TRACK	IPRT[1]	trkn			Number of the current part of the current level.
PART_NUMBER	DISCNUMBER[2][4]	TPOS	DISCNUMBER[1]			disk			A numerical value indicating which number of media this item came from; e.g. if part of a multi-disc album.
PART_NUMBER			PARTNUMBER[1]						Part number of a division within a work; e.g. a movement of a symphony.
TOTAL_PARTS	TOTALDISCS[2][4]	TPOS				disk			Total number of parts of the current level.
TOTAL_PARTS	TOTALTRACKS[2][3]	TRCK			IFRM[1]	trkn			Total number of parts of the current level.
Titles
TITLE							title		Title of item; e.g. album title or track title.
TITLE	TITLE	TIT2	TITLE	TITLE	INAM	©nam	title		Title of item; e.g. album title or track title.
SORT_WITH	TITLESORTORDER	TSOT				sonm			Defines a string which should be used instead of the title for sorting purposes.
TITLE	ALBUM	TALB	ALBUM	ALBUM		©alb	title		The collection name to which this track belongs.
SORT_WITH	ALBUMSORTORDER	TSOA				soal			Defines a string which should be used instead of the album name for sorting purposes.
ALBUM[7]	ORIGALBUM	TOAL					title		Original album/movie/show title (In case of a remake/remix).
TITLE			PART[1]				title		Division within a work; e.g. a movement of a symphony. Some tracks contain several parts.
SUBTITLE							title	alternative	Subtitle of the entity. May also be used to differentiate multiple versions of the same tracktitle in a single collection (e.g. remix info); e.g. "live", "acoustic", "radio edit", "12 inch remix", etc.
SUBTITLE	SUBTITLE	TIT3	VERSION	SUBTITLE			title	alternative	Subtitle of the entity. May also be used to differentiate multiple versions of the same tracktitle in a single collection (e.g. remix info); e.g. "live", "acoustic", "radio edit", "12 inch remix", etc.
SUBTITLE	SETSUBTITLE	TSST					title	alternative	Intended for the subtitle of the part of a set this track belongs to.
- defined by the Target types -			OPUS[1]				title		The number of the work; e.g. "Opus 10, BVW 81, K6".
				DEBUT ALBUM			title		Debut Album name.
TITLE						tvsh			Name of the show.
SORT_WITH						sosn			Show name sort order.
Entities
ARTIST	ARTIST	TPE1	ARTIST	ARTIST		©ART			A person or band/collective generally considered responsible for the work.
SORT_WITH	PERFORMERSORTORDER	TSOP				soar			Defines a string which should be used instead of the performer for sorting purposes.
URL[8]	WWWARTIST	WOAR							Official artist/performer webpage.
ARTIST[7]	ORIGARTIST	TOPE							Original artist(s)/performer(s).
LEAD_PERFORMER			PERFORMER						Lead Performer/Soloist(s). This can sometimes be the same as ARTIST.
ACCOMPANIMENT	BAND	TPE2	ENSEMBLE[1]			aART			Band/orchestra/accompaniment/musician.
SORT_WITH						soaa			Album Artist sort order.
COMPOSER	COMPOSER	TCOM	COMPOSER[1]	COMPOSER	IMUS[1]	©wrt	creator		Name of the original composer.
SORT_WITH						soco			Composer sort order.
ARRANGER			ARRANGER[1]				creator		The person who arranged the piece; e.g. "Ravel".
LYRICIST	LYRICIST	TEXT	LYRICIST[1]				creator		The person who wrote the lyrics for a musical item.
LYRICIST[7]	ORIGLYRICIST	TOLY							Original lyricist(s)/text writer(s).
CONDUCTOR	CONDUCTOR	TPE3	CONDUCTOR[1]	CONDUCTOR					The artist(s) who performed the work. In classical music this would be the conductor, orchestra, soloists.
ACTOR									Real name of actor or actress playing a role in the movie.
CHARACTER									Name of the character an actor or actress plays in this movie.
WRITTEN_BY			AUTHOR[1]		IWRI[1]		creator		The author of the story or script.
SCREENPLAY_BY									The author of the screenplay or scenario (used for movies and TV shows).
DIRECTOR					IART				Name of the director.
ASSISTANT_DIRECTOR									Name of the assistant director.
DIRECTOR_OF_PHOTOGRAPHY					ICNM[1]				The name of the director of photography, also known as cinematographer.
ART_DIRECTOR									The person who oversees the artists and craftspeople who build the sets.
EDITED_BY					IEDT[1]
PRODUCER					IPRO[1]				Name of the producer of the movie.
COPRODUCER									The name of a co-producer.
EXECUTIVE_PRODUCER									The name of an executive producer.
PRODUCTION_DESIGNER					IPDS[1]				Artist responsible for designing the overall visual appearance of a movie.
COSTUME_DESIGNER					ICDS[1]				The name of the costume designer.
CHOREGRAPHER									The name of the choregrapher.
SOUND_ENGINEER									The name of the sound engineer or sound recordist.
MASTERED_BY									The engineer who mastered the content for a physical medium or for digital distribution.
REMIXED_BY	MIXARTIST	TPE4							Interpreted, remixed, or otherwise modified by.
PRODUCTION_STUDIO					ISTD[1]
LABEL			ORGANIZATION LABEL[1]						The record label or imprint on the disc.
PUBLISHER	PUBLISHER	TPUB	PUBLISHER[1]	PUBLISHER			publisher		Name of the organization producing the track (i.e. the 'record label').
URL[9]	WWWPUBLISHER	WPUB							Publishers official webpage.
DISTRIBUTED_BY					IDST[1]
ENCODED_BY	ENCODEDBY	TENC	ENCODED-BY[1]		ITCH	©too	creator		Name of the person or organisation that encoded/ripped the audio file.
THANKS_TO							contributor		A very general tag for everyone else that wants to be listed.
	INVOLVEDPEOPLE2	TIPL							Intended as a mapping between functions and the name of the person who fulfilled the function.
INSTRUMENTS[12]	MUSICIANCREDITLIST	TMCL							Intended as a mapping between instruments and the musician that played it.
					ICMS				Commissioned. Lists the name of the person or organization that commissioned the subject of the file; e.g. "Pope Julian II".
					IENG				Engineer. Stores the name of the engineer who worked on the file.
					ISRC				Source. Identifies the name of the person or organization who supplied the original subject of the file. For example, "Trey Research."
					ISTR[1]				Starring
Contact Information
URL									URL corresponding to the tag it's included in.
EMAIL									Email corresponding to the tag it's included in.
ADDRESS									The physical address of the entity. The address should include a country code. It can be useful for a recording label.
PHONE									The phone number corresponding to the tag it's included in. It can be useful for a recording label.
FAX									The fax number corresponding to the tag it's included in. It can be useful for a recording label.
- nested using the Contact Information elements -			CONTACT						Contact information for the creators or distributors of the track. This could be a URL, an email address, the physical address of the producing label.
Search/Classification
GENRE	GENRE[2]	TCON	GENRE			©gen			The main genre of the audio or video; e.g. "classical", "ambient-house", "synthpop", "sci-fi", "drama", etc. (see Genre List from ID3v1)
MOOD	MOOD	TMOO							Intended to reflect the mood of the item with a few keywords, e.g. "Romantic", "Sad", "Uplifting", etc.
ORIGINAL_MEDIA_TYPE	MEDIATYPE	TMED	SOURCEMEDIA[1]		ISRF		source		Identifies the original recording media form from which the material originated, such as "CD", "cassette", "LP", "radio broadcast", "slide", "paper", etc.
URL[10]	WWWAUDIOSOURCE	WOAS							Official audio source webpage; e.g. a movie.
CONTENT_TYPE							type		The type of the item. e.g. Documentary, Feature Film, Cartoon, Music Video, Music, Sound FX, etc.
SUBJECT					ISBJ		subject		Describes the topic of the file, such as "Aerial view of Seattle.".
SYNOPSIS									A description of the story line of the item.
SUMMARY				ABSTRACT			description	abstract	A plot outline or a summary of the story.
DESCRIPTION			DESCRIPTION			desc	description		A short description of the contents, such as "Two birds flying".
KEYWORDS					IKEY	keyw			Keywords to the item separated by a comma, used for searching.
PERIOD							coverage	temporal	Describes the period that the piece is from or about; e.g. "Renaissance".
SORT_WITH									A child element to indicate what alternative value the parent tag (person, band, album, etc.) can have to be sorted; e.g. "The Beatles" => "Beatles, The", "Bob Marley" => "Marley, Bob"
INSTRUMENTS									The instruments that are being used/played, separated by a comma. It should be a child of the following tags: ARTIST, LEAD_PERFORMER or ACCOMPANIMENT.
LAW_RATING					IRTD[1]		audience		Depending on the country it's the format of the rating of a movie (P, R, X in the USA, an age in other countries or a URI defining a logo).
ICRA							audience		The ICRA rating. (Previously RSACi)
	LANGUAGE	TLAN		LANGUAGE	ILNG[1]		language		Language(s) of the item in the bibliographic ISO-639-2 form.
	CONTENTGROUP	TIT1				©grp	type		Used if the sound belongs to a larger category of sounds/music. For example, classical music is often sorted in different musical sections; e.g. "Piano Concerto", "Weather - Hurricane".
					IGNR		description		Genre. Describes the original work, such as, "landscape," "portrait," "still life," etc.
					IMED		source		Medium. Describes the original subject of the file, such as, "computer image," "drawing," "lithograph," and so forth. Not necessarily the same as ISRF.
					IPRD		title		Product. Specifies the name of the title the file was originally intended for, such as "Encyclopedia of Pacific Northwest Geography."
					ICNT[1]				Country
							audience	mediator	A class of entity that mediates access to the resource and for whom the resource is intended or useful.
							audience	educationLevel	Audience Education Level
							description	tableOfContents	A list of subunits of the content of the resource.
						catg			(Podcast) category.
Temporal Information
DATE_WRITTEN			DATE[1][5]		ICRD		date	created	The time that the composition of the music/script began. Information should be stored in the ISO 8601 format: "YYYY-MM-DDThh:mm:ss"; e.g. "2003-04-01T13:01:02" or "2003-04".
DATE_RECORDED	RECORDINGTIME	TDRC	DATE	RECORD DATE		©day	date	created	The time that the recording began. (See DATE_WRITTEN for format information)
DATE_RELEASED	RELEASETIME	TDRL	DATE[1][5]	YEAR			date	issued	The time that the item was originaly released. (See DATE_WRITTEN for format information)
DATE_DIGITIZED			DATE[1][5]		IDIT[1]		date	created	The time that the item was tranfered to a digitalmedium. (See DATE_WRITTEN for format information)
DATE_ENCODED	ENCODINGTIME	TDEN	DATE[1][5]				date	created	The time that the encoding of this item was completed began. (See DATE_WRITTEN for format information)
DATE_TAGGED	TAGGINGTIME	TDTG	DATE[1][5]				date		The time that the tags were done for this item. (See DATE_WRITTEN for format information)
DATE_PURCHASED			DATE[1][5]			purd	date		Information on when the file was purchased. (See DATE_WRITTEN for format information)
DATE_RELEASED[7]	ORIGRELEASETIME	TDOR							Contains a timestamp describing when the original recording of the audio was released.
							date	valid	Date (often a range) of validity of a resource.
							date	available	Date (often a range) that the resource will become or did become available.
							date	modified	Date on which the resource was changed.
							date	dateCopyrighted	Date of a statement of copyright.
							date	dateSubmitted	Date of submission of the resource (e.g. thesis, articles, etc.).
Spacial Information
COMPOSITION_LOCATION							coverage	spatial	Location that the item was originaly designed/written. Information should be stored in the following format: "country code, state/province, city" where the coutry code is the same 2 octets as in Internet domains, or possibly ISO-3166; e.g. "US, Texas, Austin" or "US, , Austin".
RECORDING_LOCATION			LOCATION	RECORD LOCATION			coverage	spatial	Location where track was recorded. (See COMPOSITION_LOCATION for format)
COMPOSER_NATIONALITY							coverage		Nationality of the main composer of the item, mostly for classical music.
Personal Information
COMMENT	COMMENT	COMM	COMMENT[1]	COMMENT	ICMT	©cmt			Any comment related to the content.
RATING	POPULARIMETER	POPM							A numeric value defining how much a person likes the song/movie. The number is between 0 and 5 with decimal values possible (e.g. 2.7), 5(.0) being the highest possible rating.
PLAY_COUNTER	PLAYCOUNTER	PCNT							The number of time the item has been played.
Technical Information
ENCODER	ENCODERSETTINGS[6]	TSSE							The software or hardware used to encode this item; e.g. "LAME" or "XviD"
ENCODER_SETTINGS	ENCODERSETTINGS[6]	TSSE	ENCODING[1]				format		A list of the settings used for encoding this item. No specific format.
BPS							format		The average bits per second of the specified item.
FPS							format		The average frames per second of the specified item.
- stored in Duration -	SONGLEN	TLEN					format	extent	Length of the audio file in milliseconds.
- stored in TrackType + CodecID + CodecName -	FILETYPE	TFLT					format		Indicates, by defined codes, which type of audio this tag defines; e.g. "MPEG Audio" (default), "MPEG 1/2 layer III", "Advanced Audio Compression", etc.
- stored in Meta Seek Information elements -	SEEKFRAME	SEEK							This frame indicates where other tags in a file/stream can be found.
- stored in SeekHead and Cues -	MPEGLOOKUP	MLLT							MPEG location lookup table to increase performance and accuracy of jumps within an audio file.
- stored in Cues -	AUDIOSEEKPOINT	ASPI							Makes seeking in audio files with variable bit rates easier using an audio seek point index.
- stored in TrackOffset -	PLAYLISTDELAY	TDLY							Defines the numbers of milliseconds of silence that should be inserted before this audio.
	EVENTTIMING	ETCO							Allows synchronisation with key events in the audio.
	SYNCEDTEMPO	SYTC							Synchronised tempo codes for a more accurate description of the tempo of a musical piece.
	POSITIONSYNC	POSS							Delivers information to the listener of how far into the audio stream he picked up.
	BUFFERSIZE	RBUF							Buffer size recommended by the server using this frame (in case of streaming).
					IDPI		format		Dots Per Inch. Stores dots per inch setting of the digitizer used to produce the file, such as "300."
					ILGT		format		Lightness. Describes the changes in lightness settings on the digitizer required to produce the file. Note that the format of this information depends on hardware used.
					IPLT		format		Palette Setting. Specifies the number of colors requested when digitizing an image, such as "256."
					ISHP		format		Sharpness. Identifies the changes in sharpness for the digitizer required to produce the file (the format depends on the hardware used).
- stored in PixelCropBottom + PixelCropTop + PixelCropLeft + PixelCropRight -					ICRP				Cropped. Describes whether an image has been cropped and, if so, how it was cropped. For example, "lower right corner."
					IDIM				Dimensions. Specifies the size of the original subject of the file. For example, "8.5 in h, 11 in w."
					ISMP				SMPTE time code defined by the Society of Motion Picture and Television Engineers in the SMPTE 12M specification.
							format	medium	The material or physical carrier of the resource.
Musical Information
BPM	BPM	TBPM				tmpo	format		Average number of beats per minute in the complete target (e.g. a chapter). Usually a decimal number.
MEASURE							format		In music, a measure is a unit of time in Western music like "4/4". It represents a regular grouping of beats, a meter, as indicated in musical notation by the time signature.. The majority of the contemporary rock and pop music you hear on the radio these days is written in the 4/4 time signature.
TUNING							format		It is saved as a frequency in hertz to allow near-perfect tuning of instruments to the same tone as the musical piece (e.g. "441.34" in Hertz). The default value is 440.0 Hz.
INITIAL_KEY	INITIALKEY	TKEY							The initial key that a musical track starts in.
Amplification Controls
REPLAYGAIN_GAIN	VOLUMEADJ2	RVA2							The gain to apply to reach 89db SPL on playback. Based on the Replay Gain standard. Note that ReplayGain information can be found at all TargetType levels (track, album, etc).
REPLAYGAIN_PEAK									The maximum absolute peak value of the item. Based on the Replay Gain standard.
	REVERB	RVRB							Subjective frame that allows you to adjust echoes of different kinds.
	EQUALIZATION2	EQU2							Subjective alignment frame to predefine an equalisation curve within the audio file.
Identifiers
ISRC	ISRC	TSRC	ISRC	ISRC			identifier		International Standard Recording Code, excluding the "ISRC" prefix and including hyphens.
MCDI	CDID	MCDI					identifier		Binary dump of the TOC of the CDROM that this item was taken from.
ISBN				ISBN			identifier		International Standard Book Number.
BARCODE			EAN/UPN[1]	EAN/UPC			identifier		EAN-13 (13-digit European Article Numbering) or UPC-A (12-digit Universal Product Code) bar code identifier.
LCCN							identifier		Library of Congress Control Number.
CATALOG_NUMBER			LABELNO[1]	CATALOG			identifier		A label-specific catalogue number used to identify the release; e.g. "TIC 01".
LABEL_CODE				LC			identifier		A 4-digit or 5-digit number to identify the record label, typically printed as (LC) xxxx or (LC) 0xxxx on CDs medias or covers, with only the number being stored.
	UNIQUEFILEID	UFID					identifier		Contains an 'Owner identifier' URL followed by an ID to identify the audio file in a database, that may provide more information relevant to the content.
							identifier	bibliographicCitation	A bibliographic reference for the resource.
						egid			Podcast episode GUID.
Commercial Information
PURCHASE_INFO	WWWCOMMERCIALINFO	WCOM							Commercial information about this item.
PURCHASE_PRICE									The amount paid for entity. There should only be a numeric value in here; e.g. "15.59" instead of "$15.59USD".
PURCHASE_CURRENCY									The ISO-4217 currency type used to pay for the entity.
PURCHASE_ITEM	WWWPAYMENT	WPAY							URL to purchase this item.
PURCHASE_OWNER	FILEOWNER	TOWN							Information on the person who purchased the file.
	COMMERCIAL	COMR							Commercial frame to store several competing offers in the same tag.
Legal Information
COPYRIGHT	COPYRIGHT	TCOP	COPYRIGHT	COPYRIGHT	ICOP	cprt	rights		Copyright attribution.
PRODUCTION_COPYRIGHT	PRODUCEDNOTICE	TPRO		PUBLICATIONRIGHT			rights		The copyright information as per the productioncopyright holder.
TERMS_OF_USE	TERMSOFUSE	USER	LICENSE				rights	accessRights	License information, e.g., "All Rights Reserved","Any Use Permitted".
URL[11]	WWWCOPYRIGHT	WCOP							Copyright/legal information.
	OWNERSHIP	OWNE					rights		Might be used as a reminder of a made transaction or, if signed, as proof. Note that the "USER" and "TOWN" frames are good to use in conjunction with this one.
Relational Information
							relation		A reference to a related resource.
							relation	isVersionOf	The described resource is a version, edition, or adaptation of the referenced resource. Changes in version imply substantive changes in content rather than differences in format.
							relation	hasVersion	The described resource has a version, edition, or adaptation, namely, the referenced resource.
							relation	isReplacedBy	The described resource is supplanted, displaced, or superseded by the referenced resource.
							relation	replaces	The described resource supplants, displaces, or supersedes the referenced resource.
							relation	isRequiredBy	The described resource is required by the referenced resource, either physically or logically.
							relation	requires	The described resource requires the referenced resource to support its function, delivery, or coherence of content.
							relation	isPartOf	The described resource is a physical or logical part of the referenced resource.
							relation	hasPart	The described resource includes the referenced resource either physically or logically.
							relation	isReferencedBy	The described resource is referenced, cited, or otherwise pointed to by the referenced resource.
							relation	references	The described resource references, cites, or otherwise points to the referenced resource.
							relation	isFormatOf	The described resource is the same intellectual content of the referenced resource, but presented in another format.
							relation	hasFormat	The described resource pre-existed the referenced resource, which is essentially the same intellectual content presented in another format.
							relation	conformsTo	A reference to an established standard to which the resource conforms.
Encryption Information
- stored in ContentEncryption -	AUDIOCRYPTO	AENC							Indicates if the actual audio stream is encrypted, and by whom.
- stored in ContentEncAlgo -	CRYPTOREG	ENCR							To identify with which method a frame has been encrypted.
	GROUPINGREG	GRID							Enables grouping of otherwise unrelated frames; e.g. when some frames are to be signed.
	SIGNATURE	SIGN							Enables a group of frames, grouped with GROUPINGREG, to be signed.
Miscellaneous Information
- stored in Attachment elements -	UNSYNCEDLYRICS	USLT				©lyr			Contains the lyrics of the song or a text transcription of other vocal activities.
- muxed with audio as subtitles -	SYNCEDLYRICS	SYLT							Synchronised lyrics/text.
- stored in Attachment elements -	PICTURE	APIC				covr			Contains a picture directly related to the audio file.
- stored in Attachment elements -	GENERALOBJECT	GEOB							In this frame any type of file can be encapsulated.
	PRIVATE	PRIV							Contains information used by a program which does not fit into the other frames.
	USERTEXT	TXXX							User defined text information frame.
	LINKEDINFO	LINK							Used to link information from another ID3v2 tag.
	ORIGFILENAME	TOFN							Contains the preferred filename for the file
	NETRADIOSTATION	TRSN							Contains the name of the internet radio station from which the audio is streamed.
	NETRADIOOWNER	TRSO							Contains the name of the owner of the internet radio station from which the audio is streamed.
	WWWRADIOPAGE	WORS							Official internet radio station homepage.
- nested using URL -	WWWUSER	WXXX			IWEB[1]				User defined URL link frame.
	WWWAUDIOFILE	WOAF				purl			URL pointing at a file specific webpage (official audio file webpage).
				RELATED					Location of related information.
				BIBLIOGRAPHY					Bibliography/Discography.
				INTROPLAY					Characteristic part of piece for intro playing.
- stored in WritingApp -					ISFT				Software. Identifies the name of the software package used to create the file, such as "Microsoft WaveEdit."
					IARL				Archival Location. Indicates where the subject of the file is archived.
					IAS1[1]				Identifies the name of the language of the first audio stream.
					IAS2[1]				Identifies the name of the language of the second audio stream.
					IAS3[1]				Identifies the name of the language of the third audio stream.
					IAS4[1]				Identifies the name of the language of the fourth audio stream.
					IAS5[1]				Identifies the name of the language of the fifth audio stream.
					IAS6[1]				Identifies the name of the language of the sixth audio stream.
					IAS7[1]				Identifies the name of the language of the seventh audio stream.
					IAS8[1]				Identifies the name of the language of the eighth audio stream.
					IAS9[1]				Identifies the name of the language of the ninth audio stream.
					ICAS[1]				Identifies the common audio stream. For example when the value is set to '2' the 2nd audio stream, defined by IAS1 to IAS9, will be played by default. '0' is the local machine language.
					IBSU[1]				Base URL.
					ILGU[1]				Logo URL.
					ILIU[1]				Logo Icon URL.
					IWMU[1]				Watermark URL.
					IMIU[1]				More Info URL.
					IMBI[1]				More Info Banner Image.
					IMBU[1]				More Info Banner URL.
					IMIT[1]				More Info Text.
						cpil			Boolean to mark tracks as part of a compilation.
						pcst			Boolean to mark tracks as part of a gapless album.
						pgap			Boolean to mark tracks being a podcast.
Not Grouped (yet)
				FILE					File location.
				MEDIA					Source, Source Media Number/Total Media Number,Source Time.
- stored in Meta Seek Information elements and Cues -				INDEX					Indexes for quick access.