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Topic: iTunes Sound Check in id3v2 tag? (Read 3693 times) previous topic - next topic
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iTunes Sound Check in id3v2 tag?

Are the "Sound Check" values computed by iTunes stored in the id3v2 tag in Mp3 files, or are the values only stored in the iTunes database?

It they're stored in the id3v2 tag, what's the frame name?  Or is a TXXX frame with some particular formatting used?

iTunes Sound Check in id3v2 tag?

Reply #1
It's in the COMM frame with the description iTunNORM

iTunes Sound Check in id3v2 tag?

Reply #2
It's in the COMM frame with the description iTunNORM

Thanks.

It just gets appended to the text that already exists in the COMM frame?  I take it that it appears on a single line, or is some other kind of delimiter used?  So after allowing iTunes to add the Sound Check values a comment might look like:

Code: [Select]
Recorded live at the Plugged Nickel, Nov 18 & 19, 1964.
iTunNORM 00000077 00000057 000001E7 000001BA 00004C61 00004C61 00001BF4 00001929 00004C61 00004C61


Is that correct?

iTunes Sound Check in id3v2 tag?

Reply #3
No. A second frame is created. ID3v2 can have multiple COMM frames, but each should have a different description.
The description should not be visible or it should be shown separately from the content.
Also the different COMM frames should be treated as single frames, not as one.

The Comment you usually see is the one with an empty description.
The others are either ignored (ok) or mixed together (bad) or shown separately (best).
Not every application takes care of that.

 
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