# Mp3tag 2.45 Using Wrong Encoding?
**URL:** https://community.mp3tag.de/t/mp3tag-2-45-using-wrong-encoding/9406
**Category:** Support
**Created:** [November 22, 2009, 7:06pm UTC](https://community.mp3tag.de/t/mp3tag-2-45-using-wrong-encoding/9406 "2009-11-22T19:06:32Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@xfkennedy](https://community.mp3tag.de/u/xfkennedy)
#### Post date: [November 22, 2009, 7:06pm UTC](https://community.mp3tag.de/t/mp3tag-2-45-using-wrong-encoding/9406/1 "2009-11-22T19:06:32Z")
[2009-10-29] FIX: numerical ID3v2 frames TLEN, TBPM and TDAT were always written in Unicode instead
```
of ISO-8859-1.
```
isnt this supposed to be windows-1252? i have been working with my own program to write id3 tags and if i understand correct any tags with hex values between 0x80 and 0x9F will be read/ written incorrectly
[http://en.wikipedia.org/wiki/Iso-8859-1#IS...-1252\_confusion](http://en.wikipedia.org/wiki/Iso-8859-1#ISO-8859-1_and_Windows-1252_confusion)
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 22, 2009, 9:31pm UTC](https://community.mp3tag.de/t/mp3tag-2-45-using-wrong-encoding/9406/2 "2009-11-22T21:31:14Z")
The ID3v2 specification states that ISO-8859-1 should be used for numeric frames and doesn't mention anything regarding Windows-1252.
See [http://id3.org/id3v2.4.0-structure](http://id3.org/id3v2.4.0-structure) for details.
Kind regards,
Florian
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:21pm UTC](https://community.mp3tag.de/t/mp3tag-2-45-using-wrong-encoding/9406/3 "2026-02-09T12:21:58Z")