JulianL said the following on 31/12/2005 18:16:
> The curious thing is that the one AAC album that is a compilation is
> correctly recognised as such by the iPod but any of my MP3 albums that
> are compilations are not recognised as such by the iPod. This makes me
> wonder if flac2mp3 isn't transcoding some crucial info from the FLAC to
> the MP3 file.

flac2mp3 has a defined set of tags that it copies from flac files to mp3
files.

These are:

our %MP3frames = (
    'ALBUM'                   => 'TALB',
    'ARTIST'                  => 'TPE1',
    'COMMENT'                 => 'COMM',
    'DATE'                    => 'TYER',
    'GENRE'                   => 'TCON',
    'TITLE'                   => 'TIT2',
    'TRACKNUMBER'             => 'TRCK',
    'MUSICBRAINZ_ALBUMID'     => 'TXXX',
    'MUSICBRAINZ_ALBUMSTATUS' => 'TXXX',
    'MUSICBRAINZ_ALBUMTYPE'   => 'TXXX',
    'MUSICBRAINZ_ARTISTID'    => 'TXXX',
    'MUSICBRAINZ_SORTNAME'    => 'TXXX',
    'MUSICBRAINZ_TRACKID'     => 'UFID',
    'MUSICBRAINZ_TRMID'       => 'TXXX',
);

For "simple" tags, it is sufficient to just add them to this hash and
they will be converted.

> Any ideas what this might be? Is there something I could
> hand-tag (using mp3tag or similar) onto a converted mp3 file to see if
> the iPod then recognises it as a compilation?

I'm not sure how iTunes classifies an album as a compilation, but you
can see if it's a tag-related issue by checking the tags in the mp3
files produced by iTunes and those converted from flac.

HTH,

R.

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