[Matroska-devel] Please disregard previous mail "RE: CD-in-Matroska, "

Vegard Pettersen vegard_p at broadpark.no
Wed Sep 22 17:38:26 CEST 2004


I messed up the .doc-file, so here's the plain text:
Implementation of “CD-in-Matroska”

1. The Lead-In may contain metadata
1.1. CD-TEXT
-fLAC reportedly ditched implementing this for some reason.

1.2. ISRC (International Standard Recording Code)
-The ISRC Code (International Standard Recording Code) is a unique 
international identifier for tracks on sound and music-video recordings. The 
ISRC is 12 character alpha-numeric code, which functions as a digital 
"fingerprint" for each track, unlike a Universal Product Code which is tied 
to the entire disc. In addition, the ISRC remains allocated to a track 
regardless of changes in ownership. It is an extremely powerful tool for 
royalty collection, administration, and anti-piracy safeguards in the digital 
In other words, it may be useless.

2. Pregaps
2.1. Pregap1 of track 01 may contain a truly hidden2 track

2.2. Pregap of tracks 02-99 may contain false hidden3 tracks

3. Number of entries in TOC
3.1. The number of tracks for  a CD is in the inclusive range of TRACK [01-99]

3.2. The number of indices for  a TRACK is in the inclusive range of INDEX 
-Incomplete implementation, only INDEX [00 – 01] currently

4. A track may contain other datatypes than AUDIO
-Uncertain, the degree to which ripping-tools implement ripping data-tracks is 
unknown, and the usefullness of ripping such tracks is also uncertain.

5. Other CD-Audio formats than CDDA, such as SACD, DVD-AUDIO, Dolby Surround 
5.1 etc.

Some feedback on this would be interesting, so 
that I can get a feel of which direction you want this to take - a complete 
1:1 mapping of the Red Book cd-image, a subset of the metadata based on the 
Red Book, or just the bare essentials necessary for playing the audio-file.


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