[mb-devel] Calculate of DiscID trouble...

[Lukáš Lalinský]

On So, 2007-05-19 at 13:23 +0200, Thees Winkler wrote:
> I am the developer of the opensource program LameFE. I have a small
> technical question on how to calculate the
> Disc ID used by MusicBrainz for Audio-CDs having an extra data-track. For
> several
> reasons I do not want to use the musicbrainz-lib-3.0 to do the job for me...

You don't have to use libmb3 for that, see
http://musicbrainz.org/doc/libdiscid

> I implemented the calculation of the DiscID following the guidelines of your
> wiki
> and the implementation from CDEx.
> Hover for several Audio CDs with Data track my "method" does not work. Hope
> you can
> Help me out. (Example for CD that is not working for me is the following
> one:
> http://musicbrainz.org/release/bdd50f20-3d23-420d-9f25-58fbc5ca760f.html
> 

Which part of the process doesn't work? TOC reading or calculation of
the DiscId?

You can compare the TOC you get to
http://musicbrainz.org/show/cdtoc/?cdtocid=189342 or
http://musicbrainz.org/show/cdtoc/?cdtocid=191183

Also notice that the two DiscIds here are different just by additional
+2 secs on the lead-out track. This is caused by a bug/feature in MCI
interface to read the TOC.

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