bug? unicode for multiple ARTIST, GENRE in MP3 file Options

[psme]

The problem only occur on MP3 file. No problem with FLAC/ALAC file.

I'm putting more GENRE to my songs, and find that I can NOT put more ARTIST or GENRE tag, if the name contain unicode at the end of the string.

For example, in GENRE this work:

genre1\\genre2\\genre3

But NOT this:

genre1_unicode\\genre2\\genre3

once saved, mp3tag only show:

genre1_unicode

genre2\\genre3 are missing.

in this case:

genre1\\genre2_unicode\\genre3

will saved as:

genre1\\genre2_unicode

and genre3 is missing

The problem occur only there is a unicode character at the end of the string.

This works:

genre_unicode_1\\genre_unicode_2\\genre_unicode_3

The problem occur on the ARTIST tag too (and I guess any more tag in multiple entry). And only on MP3 file.

Is this a bug?

[DetlevD]

... I'm putting more GENRE to my songs, and find that I can NOT put more ARTIST or GENRE tag, if the name contain unicode at the end of the string. ...

What unicode character for example?

GenreŠ\\Pip\\Pop
Pip\\GenreŠ\\Pop
Pip\\Pop\\GenreŠ
ƒŠØ\\ƒŠØ\\ƒŠØ
٠١٢٣٤٥٦٧٨٩\\0123456789\\०१२३४५६७८९

... works ... always created three GENRE tag-fields.

DD.20120612.0640.CEST

This post has been edited by DetlevD: Jun 12 2012, 05:41

[psme]

What unicode character for example?

GenreŠ\\Pip\\Pop
Pip\\GenreŠ\\Pop
Pip\\Pop\\GenreŠ
ƒŠØ\\ƒŠØ\\ƒŠØ
٠١٢٣٤٥٦٧٨٩\\0123456789\\०१२३४५६७८९

... works ... always created three GENRE tag-fields.

DD.20120612.0640.CEST

Thanks for respond. For example I couldn't put these to GENRE for my MP3 songs:

AKB48シングル\\女性\\日本流行音樂

The above only return:

AKB48シングル

If I put this:

シングルAKB48\\女性\\日本流行音樂

then the result is:

シングルAKB48\\女性

There is no such problem with FLAC or ALAC songs.

[psme]

I just tried your example:

٠١٢٣٤٥٦٧٨٩\\0123456789\\०१२३४५६७८९

On a MP3 file, the result is:

٠١٢٣٤٥٦٧٨٩\\0123456789

But on a FLAC file, it can save all 3 GENRE.

I already tried Select All Songs->Tag Copy->Remove Tag->Tag Paste, with same result...

Is it possible the problem is due to my song file?

[DetlevD]

Thanks for respond. For example I couldn't put these to GENRE for my MP3 songs:
AKB48シングル\\女性\\日本流行音樂
The above only return:
AKB48シングル
...

Using the example string from above there was no problem to create three GENRE tag-fields.


Well, if the tag-type was changed from ID3v2.4 to ID3v2.3 (set options, Ctrl+X, Ctrl+V) only one GENRE tag-field with the first value from above has survived (AKB48シングル).

On ID3v2.3 it is not possible to create three GENRE tag-fields from these multi values ...
AKB48シングル\\女性\\日本流行音樂
It will result only to one GENRE tag-field with the value ...
AKB48シングル

Using ...
٠١٢٣٤٥٦٧٨٩\\0123456789\\०१२३४५६७८९
it will create two GENRE tag-fields
٠١٢٣٤٥٦٧٨٩\\0123456789
That seems to be a quirk or restriction of the tag-type ID3v2.3
What does the ID3v2.3 standard framework say about multi-value tag-field?

DD.20120612.0720.CEST

This post has been edited by DetlevD: Jun 12 2012, 06:21

[psme]

I already tried Tag Copy->Remove Tag->Tag Paste. It didn't help.

Since you mentioned ID3v2.3/v2.4 issue, I go to Tools->Options->Tags->Mpeg, under "Write" section, "ID3v1" and "ID3v2" are checked, under "ID3v2" section, "ID3v2.3 UTF-16" is selected. I changed that to "ID3v2.4 UTF-8".

Now I can save all 3 GENRE on MP3 songs.

I don't remember changing those ID3 settings so I think the default is "ID3v2.3 UTF-16". On FLAC/ALAC songs, I can put 3 or more GENRE without any issue. But MP3 doesn't work.

Now 3 or more GENRE works on MP3 in setting "ID3v2.4 UTF-8".

Should I keep the setting in "ID3v2.4 UTF-8" for all further operation? Should I use "ID3v2.3 UTF-16" for FLAC/ALAC and change to "ID3v2.4 UTF-8" for MP3?

Thanks in advance!

This post has been edited by psme: Jun 12 2012, 07:34

[DetlevD]

... Should I keep the setting in "ID3v2.4 UTF-8" for all further operation? Should I use "ID3v2.3 UTF-16" for FLAC/ALAC and change to "ID3v2.4 UTF-8" for MP3? ...

Extending the ID3v2.3 standard, Mp3tag offers multi-value support, which is somewhat limited, as you have pointed out.
Pruning the ID3v2.3 standard, for the tag-field "TCON", Mp3tag seems not support "refinement" or "multi references", but the new content types "(RX)" and "(CR)" are supported.

If you need full support for multi genre tag-fields, then use ID3v2.4 UTF-8 (as a bet on the future).
If you want to be compatible in the current mp3 media world, then use ID3v2.3 UTF-16.

FLAC/ALAC media will be tagged with the related tag-type VORBIS COMMENT.

DD.20120612.0918.CEST

This post has been edited by DetlevD: Jun 12 2012, 08:19