Tango.info track duration
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The tango.info music database contains a playing duration for some tracks.
The precision level is 1 second.
The value is stored in the format "<minutes>:<seconds>".
The value can contain the pregap, e.g. for track 02 from
https://tango.info/x/cue/00724349997929-1.cue TRACK 01 AUDIO TITLE "Roberto Firpo - Instrumental / Ojos Negros" PERFORMER "Roberto Firpo Y Su Cuarteto" ISRC ARF049601858 INDEX 01 00:00:00 TRACK 02 AUDIO TITLE "Roberto Firpo - Instrumental / Don Esteban" PERFORMER "Roberto Firpo Y Su Cuarteto" ISRC ARF049602807 INDEX 00 02:44:40 INDEX 01 02:47:20 TRACK 03 AUDIO TITLE "Roberto Firpo - Instrumental / Un Lamento" PERFORMER "Roberto Firpo Y Su Cuarteto" ISRC ARF049602806 INDEX 00 05:39:06 INDEX 01 05:41:59
the duration could be
- 05:39:06 - 02:44:40 ~ 05:39 - 02:44 = 2:55 or
- 05:39:06 - 02:47:20 ~ 05:39 - 02:47 = 2:52
The data is obtained from different sources, among them are:
- product description
- display of track duration in a music player
Gap position
It has been reported to tango.info:
Prefix on CD. Suffix when ripped to individual track files - except last file.
XMCD
According to http://ftp.freedb.org/pub/freedb/latest/DBFORMAT
The comments should also contain the string "# Track frame offsets:" followed by the list of track offsets (the # of frames from the beginning of the CD) obtained from the table of contents on the CD itself
valid XMCD files contain frame offsets from the beginning of a CD.
The standard does not define whether that is INDEX 00 or INDEX 01 as given in the cue sheets.
Long durations before data track
http://tracktype.org/index.html?fDisc/442913
12 De puro guapo 5:40 13 Bonus Data Track 0:50
http://tracktype.org/index.html?fDisc/976894
12 De puro guapo 5:24 13 DATA 0:43
Tagging software
- in mp3tag the variable to obtain the duration is %_length%
- in the tango.info track tagger format string the variable is %duration%
Player
- in foobar2000 the field is labeled "Duration"