# Horrible lack of Knowledge about Tags
**URL:** https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405
**Category:** Support
**Created:** [February 1, 2007, 5:26pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405 "2007-02-01T17:26:26Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@auldyin](https://community.mp3tag.de/u/auldyin)
#### Post date: [February 1, 2007, 5:26pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405/1 "2007-02-01T17:26:26Z")
I seem to take one step forward and then two steps backwards (at least) with this "minefield" called tagging.
I'm using the latest version of MP3Tag to sort out some inherited MP4 files.
I firstly change the extension to m4a and this works fine.
However, my customised columns, (produced mainly by dano helping me out) show the TAG TYPES to be M4A(M4A).
Fundamentally I don't follow this because I have MP3Tag set up to write ID3v1 and ID3v2 tags.
Also, I have a customised column showing TAG SIZES to be 520707 (52707/).
Can somebody tell me what, if anything, is wrong here because I thought that the tags would be ID3v1 and ID3v2.
Cheers
(Remember to be gentle as I'm nearly 64 and it takes a long time for me get my head round some of this stuff)
---
### Author:  [@Sebastian\_Mares](https://community.mp3tag.de/u/Sebastian_Mares)
#### Post date: [February 1, 2007, 6:17pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405/2 "2007-02-01T18:17:57Z")
M4A files cannot contain ID3 tags at all, as you can see in the [FAQ](https://community.mp3tag.de/t/965/1).
---
### Author:  [@auldyin](https://community.mp3tag.de/u/auldyin)
#### Post date: [February 1, 2007, 6:59pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405/3 "2007-02-01T18:59:59Z")
My friend, you must get totally pissed off answering questions posed by donkeys
Thanks
---
### Author:  [@Sebastian\_Mares](https://community.mp3tag.de/u/Sebastian_Mares)
#### Post date: [February 1, 2007, 8:58pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405/4 "2007-02-01T20:58:16Z")
Nah, no problems. 🙂
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:20pm UTC](https://community.mp3tag.de/t/horrible-lack-of-knowledge-about-tags/4405/5 "2026-02-09T12:20:07Z")